Triumph TR3 Specs

One engine family, one chassis and one body shape from 1955 to 1962, with disc brakes from 1956, a bigger engine from 1959 and the TR4's gearbox in 1962: the TR3's figures as the road tests, the clubs and the factory gave them, and where they differ.

A TR3A in profile, with wire wheels, on a rooftop car park in the Netherlands in June 2008.Alf van Beem, CC0

From the first TR3 of October 1955 to the last TR3B of 1962, the sidescreen TR kept one chassis, one body shape, one wheelbase and one family of engines. What changed can be counted on one hand: front disc brakes from commission number TS13046 in September 1956, a new face in 1957, a bigger engine offered from 1959 and, in the TR3B of 1962, the TR4's gearbox (transmission) and, in most of those cars, its engine.

The tables below set the five kinds of car side by side: the TR3 with drum brakes and with discs, the TR3A, and the two series of the TR3B, TSF and TCF. Each figure is shown with the source that printed it. Where the sources differ, the table leads with one, and a small asterisk beside it opens every other figure with its source. The sources read hold no period road test of either TR3B series.⁠source 1source 2source 3

The engine and its ratings

Every TR3 had a four-cylinder engine with wet cylinder liners, overhead valves worked by pushrods, three main bearings and twin SU carburettors; The Autocar summed up its origins in 1957:

the engine, which is essentially similar to the power unit of the Standard Vanguard, gives 100 b.h.p. at 5,000 r.p.m., 10 b.h.p. more than the output reached on the earlier cars at 4,800 r.p.m.

The Autocar, 11 January 1957

The power figures need care. In Britain Standard-Triumph first rated the engine below the figure its American company announced, and only the high-port head of 1956 made the two agree. Motor Sport's data panel of 1957 and Motor Trend's test of 1956 print the later rating at a lower engine speed than The Autocar, Sports Cars Illustrated, Motor Trend in 1957 and the TR Register do, and the table follows the majority. Only Car and Driver, in 1961, called the TR3's figure a gross rating, in comparing it with the TR4's net one; none of the British sources read says how it was measured.

The bigger engine of 1959, offered on the TR3A and fitted to the TCF cars, had a wider bore and a higher compression ratio. Standard-Triumph's own figure for the TCF cars was not found, so their column leads with the TR4 engine's net rating, with that engine's gross rating and Dwinger's rating of the TCF, in PS, behind the asterisk.⁠source 4source 2source 5source 6source 7source 8source 9source 10source 11source 12source 1

The engine bay of a red sports car with the bonnet propped open: twin carburettors with round air cleaners and a chrome rocker cover. — The engine bay of a small-mouth TR3 at the Nottingham Motor Show in June 2026: the twin SU carburettors and the chrome-plated rocker cover fitted from engine TS18230E.Aethonatic, CC0

Contents

Transmission

The gearbox had four speeds, with synchromesh on second, third and top, until the TR3B took the TR4's box with synchromesh on all four. The Laycock-de Normanville overdrive, an extra, acted on the top three gears, so the testers counted seven forward speeds. The ratios were these:

Gear	Gearbox ratio	Overall, with the 3.7 axle	Overall, in overdrive
First	3.38	12.5	–
Second	2.00	7.4	6.07
Third	1.325	4.9	4.02
Top	1.00	3.7	3.03
Reverse	4.28	–	–

The ratios are those of the American newsletter's table of 1958 and Dwinger's, which agree except in reverse, where the newsletter prints 4.35 and Sports Cars Illustrated 4.27; and Motor Sport's data panel printed the overall first gear as 12.1. The overdrive's own ratio was 0.82. A 3.7 to 1 axle was standard, and Motor Trend reported in 1957 that the 4.1 to 1 was "available with o.d. only", though Sports Cars Illustrated's TR3A of 1958 had the 4.11 axle and no overdrive. The American newsletter told owners how to tell them apart: green paint on the axle's cover plate for 3.7, green and white for 4.1. On the 3.7 axle The Autocar calculated 32 km/h (20 mph) for every 1,000 rpm in top, and 39 km/h (24.4 mph) in overdrive top. The clutch was a single dry plate, worked hydraulically.

The engine, as well as the gearing and other mechanical components, is identical to last year's Triumph engine, exactly — right down to the last bolt.

Len Griffing, Sports Cars Illustrated, March 1958⁠13856410714153

Contents

Chassis, steering, brakes and wheels

The body sat on a separate frame of channel-steel pressings with an X-shaped cross-member. At the front were wishbones of unequal length with coil springs and telescopic dampers (shock absorbers); at the back a live axle on half-elliptic leaf springs, with lever-arm dampers. A front anti-roll bar was not standard: in 1959 the American dealers sold one as a kit.

The drum-braked cars had Lockheed brakes all round. From TS13046 the front wheels had Girling discs, and from TS56377 the rear drums were smaller. Sports Cars Illustrated's data panel of 1958 lists the rear drums as "Girling or Lockheed", so which make later cars had at the back is not settled. The tyres, whose size the table gives, ran on pressed-steel disc wheels, with centre-lock wire wheels as an extra; The Autocar ran its test car at 1.5 bar (22 psi) front and 1.7 bar (24 psi) rear for normal driving, and 1.9 and 2.1 bar (28 and 30 psi) for fast work.⁠source 7source 2source 4source 5source 15source 6source 16source 8source 17source 1source 18

A chromed wire wheel with a two-eared knock-off spinner marked Right Side under a dark wing. — A centre-lock wire wheel on a TR3A, its two-eared spinner marked for the right side, photographed in February 2013.Danesman1, CC BY-SA 3.0

Contents

Measurements and weights

The wheelbase and height are the same in every test and the width all but the same; the length is not. The Autocar's car, which had front overriders (bumper guards), Motor Trend's of 1957 and Sports Cars Illustrated's TR3A of 1958 measured longer than Motor Sport's hard-top and Sports Cars Illustrated's TR3 of 1957, and no source says why. The track was 1,143 mm (45 in) at the front and 1,156 mm (45½ in) at the back by the measurements of The Autocar, Motor Sport and the American tests; Car and Driver gave 1,143 mm at the back as well.

The fuel tank of the TR3 was smaller than the TR2's: the factory's workshop manual says it was reduced to make room for the occasional rear seat. Motor Sport's data panel of 1957 prints the TR2's capacity, and the table gives both.

No two weights in print are of the same car in the same state. Motor Sport weighed its hard-top with about 4.5 litres (an imperial gallon) of petrol (gas) and no one aboard; The Autocar weighed SKV 656, a hard-top with overdrive and wire wheels, with 23 litres (5 imperial gallons); Motor Trend weighed its 1956 car with fuel, oil and water; and the American tests of 1957 and 1958 do not all say what was in the car. The table gives the others' figures with their conditions, and none is averaged; Motor Trend's 1956 weight is on the TR3's page.⁠source 4source 10source 5source 15source 6source 7source 12source 16

A pale blue open two-seater with chrome wire wheels and whitewall tyres parked on a sandy track under trees. — A TR3A in profile on a sandy track under trees, photographed in June 2010, on chromed wire wheels and the whitewall tyres that were an American option.Neozoon, CC BY-SA 3.0

Contents

Performance, test by test

The comparison below gives 0–60 mph times and top speeds only for the disc-braked TR3 and the TR3A, each column's other figures behind the asterisk; Motor Trend's figures of 1956 and The Motor's, whose cars no source places before or after the discs, are on the TR3's page. The tests' other times and their fuel consumption are below. Each tester's car was different, in body, gearing and equipment, and so was the weather:

Test	Car	0–30 mph	0–50 mph	0–80 mph	Fuel consumption
Motor Trend, October 1956	A standard TR3	4.6 s	–	–	19.4 mpg (US)
The Autocar, 11 January 1957	SKV 656: hard-top, overdrive, wire wheels, discs	3.7 s	8.8 s	22.45 s	24.9 mpg (imperial) overall
Sports Cars Illustrated, April 1957	A disc-braked TR3 with overdrive and wire wheels	3.4 s	7.9 s	20.0 s	25.5 mpg (US) average
Motor Sport, July 1957	A hard-top with overdrive and wire wheels	–	–	–	25.4 mpg (imperial) on fast main roads
Motor Trend, September 1957	A standard TR3	–	–	–	23.1 mpg (US)
Sports Cars Illustrated, March 1958	A TR3A with the 4.11 axle and no overdrive	4.4 s	8.4 s	22.6 s	30 mpg (US) average
The Motor, 4 April 1956 (unread), as Wikipedia reports it	A hard-top with overdrive	3.6 s	7.5 s	–	27.1 mpg (imperial)

Motor Trend's 0–60 mph time of September 1957 is far quicker than any other test's, and no source explains it; it is shown as that magazine's figure for its car. Standard-Triumph's American advertisements of 1957 and 1958 claimed 50 mph from rest in 8 seconds, a top speed above any a tester timed, and "up to 35 miles per gallon". The speedometers flattered: The Autocar's read 60 mph at a true 92 km/h (57 mph), and Motor Sport's was 6 km/h (3.7 mph) fast at 60, though Sports Cars Illustrated found its 1957 car's "unusually accurate".

A speedometer reading to 120 mph and a rev counter in a tan leather dashboard. — Rev counter and speedometer, the two large dials before a TR3A's driver, from a set its photographer dates to 1961.The Car Spy, CC BY 2.0

Contents

Production

Sources for Production, by version

Price new: Disc Brakes: Several figures in print.Motor Sport, "The cars at Earls Court", Nov 1956, p. 14⁠source 20; The Autocar, "The Autocar Road Test No. 1622 — Triumph TR3 Hardtop", 11 Jan 1957, pp. 41–43⁠source 4; Karl Ludvigsen, "Disc Braked TR-3", with the Standard-Triumph advertisement in the same issue, Sports Cars Illustrated, Apr 1957, pp. 16–19, 58⁠source 5; Wayne Thoms, "Triumph TR-3" (An MT Research Report), Motor Trend, Sep 1957, p. 36ff⁠source 7; TR3A: Several figures in print.Len Griffing, "SCI Road Test — Triumph TR3", with the Standard-Triumph Motor Co. Inc. advertisement in the same issue, Sports Cars Illustrated, Mar 1958, pp. 30–31, 58⁠source 15; TR Register, Buyer's guide pages (group): "Buyer's Guide" (general), "Triumph TR3 Buyers Guide", "Triumph TR3A Buyers Guide"⁠source 2
Built: Drum Brakes: One good source.Graham Robson (essay "15 Years of Evolution"), Triumph TR2 – TR3/3A, TR4/4A – TR5, TR250 1953–1968 Parts & Accessories Catalogue, Rimmer Bros, edn 2.1 (source code TR2512), Part 1⁠source 21; Disc Brakes: Several figures in print.Graham Robson (essay "15 Years of Evolution"), Triumph TR2 – TR3/3A, TR4/4A – TR5, TR250 1953–1968 Parts & Accessories Catalogue, Rimmer Bros, edn 2.1 (source code TR2512), Part 1⁠source 21; TR Register, Buyer's guide pages (group): "Buyer's Guide" (general), "Triumph TR3 Buyers Guide", "Triumph TR3A Buyers Guide"⁠source 2; Motor Sport, "The cars at Earls Court", Nov 1956, p. 14⁠source 20; TR3A: Good sources disagree.TR Register, Buyer's guide pages (group): "Buyer's Guide" (general), "Triumph TR3 Buyers Guide", "Triumph TR3A Buyers Guide"⁠source 2; Carl Musson (production dates and numbers) and Ken Streeter (spotter's guide), "TR3 (1955-1962)": the history, "Production Dates and Numbers" and "The TR2-TR3 Series Spotter's Guide", Vintage Triumph Register⁠source 1; Graham Robson (essay "15 Years of Evolution"), Triumph TR2 – TR3/3A, TR4/4A – TR5, TR250 1953–1968 Parts & Accessories Catalogue, Rimmer Bros, edn 2.1 (source code TR2512), Part 1⁠source 21; Bruno Dwinger, "TR 2 bis TR 3 B: Geschichte, Typen und Kaufberatung", TR-Register Deutschland, Nov 2008, 10 pp. (PDF)⁠source 8; TR Drivers Club, "Triumph TR3B" (updated March 2015)⁠source 3; TSF: Several figures in print.Graham Robson (essay "15 Years of Evolution"), Triumph TR2 – TR3/3A, TR4/4A – TR5, TR250 1953–1968 Parts & Accessories Catalogue, Rimmer Bros, edn 2.1 (source code TR2512), Part 1⁠source 21; Carl Musson (production dates and numbers) and Ken Streeter (spotter's guide), "TR3 (1955-1962)": the history, "Production Dates and Numbers" and "The TR2-TR3 Series Spotter's Guide", Vintage Triumph Register⁠source 1; TCF: Several figures in print.Graham Robson (essay "15 Years of Evolution"), Triumph TR2 – TR3/3A, TR4/4A – TR5, TR250 1953–1968 Parts & Accessories Catalogue, Rimmer Bros, edn 2.1 (source code TR2512), Part 1⁠source 21; Carl Musson (production dates and numbers) and Ken Streeter (spotter's guide), "TR3 (1955-1962)": the history, "Production Dates and Numbers" and "The TR2-TR3 Series Spotter's Guide", Vintage Triumph Register⁠source 1
Coachbuilders: Disc Brakes: One good source.Spring 1957. Bill Boddy, "Sports Cars of the 'Big Five'", Motor Sport, May 1957, p. 15⁠source 22
Built at: Drum Brakes: One good source.The TR2 and TR3. Graham Robson (essay "15 Years of Evolution"), Triumph TR2 – TR3/3A, TR4/4A – TR5, TR250 1953–1968 Parts & Accessories Catalogue, Rimmer Bros, edn 2.1 (source code TR2512), Part 1⁠source 21; Disc Brakes: One good source.The TR2 and TR3. Graham Robson (essay "15 Years of Evolution"), Triumph TR2 – TR3/3A, TR4/4A – TR5, TR250 1953–1968 Parts & Accessories Catalogue, Rimmer Bros, edn 2.1 (source code TR2512), Part 1⁠source 21; TR3A: One good source.TR production figures heading. Graham Robson (essay "15 Years of Evolution"), Triumph TR2 – TR3/3A, TR4/4A – TR5, TR250 1953–1968 Parts & Accessories Catalogue, Rimmer Bros, edn 2.1 (source code TR2512), Part 1⁠source 21; TSF: Several figures in print.Graham Robson (essay "15 Years of Evolution"), Triumph TR2 – TR3/3A, TR4/4A – TR5, TR250 1953–1968 Parts & Accessories Catalogue, Rimmer Bros, edn 2.1 (source code TR2512), Part 1⁠source 21; TR Drivers Club, "Triumph TR3B" (updated March 2015)⁠source 3; TCF: Several figures in print.Graham Robson (essay "15 Years of Evolution"), Triumph TR2 – TR3/3A, TR4/4A – TR5, TR250 1953–1968 Parts & Accessories Catalogue, Rimmer Bros, edn 2.1 (source code TR2512), Part 1⁠source 21; TR Drivers Club, "Triumph TR3B" (updated March 2015)⁠source 3

Production, by version
Item	Drum Brakes	Disc Brakes	TR3A	TSF	TCF
Price new	Not in the sources read	£1,021 7s Price new, Disc Brakes Several figures in print. £1,021 7sOne good source: Motor Sport, "The cars at Earls Court", Nov 1956, p. 14, inclusive of purchase tax, Earls Court October 1956 ("at the unchanged price")⁠source 20 £1,073 17sOne good source: The Autocar, "The Autocar Road Test No. 1622 — Triumph TR3 Hardtop", 11 Jan 1957, pp. 41–43, hard-top, £715 basic + £358 17s purchase tax, January 1957⁠source 4 $2,625Good sources agree: Karl Ludvigsen, "Disc Braked TR-3", with the Standard-Triumph advertisement in the same issue, Sports Cars Illustrated, Apr 1957, pp. 16–19, 58, port of entry, 1957 model ("Now with exclusive disc brakes")⁠source 5; Wayne Thoms, "Triumph TR-3" (An MT Research Report), Motor Trend, Sep 1957, p. 36ff, F.O.B. port of entry, roadster (hardtop $2,790)⁠source 7	$2,675 Price new, TR3A Several figures in print. $2,675One good source: Len Griffing, "SCI Road Test — Triumph TR3", with the Standard-Triumph Motor Co. Inc. advertisement in the same issue, Sports Cars Illustrated, Mar 1958, pp. 30–31, 58, soft top, "plus tax and license at U.S. ports of entry. (Slightly higher West Coast ports.)"⁠source 15 £699One good source: TR Register, Buyer's guide pages (group): "Buyer's Guide" (general), "Triumph TR3 Buyers Guide", "Triumph TR3A Buyers Guide", basic, undated⁠source 2	Not in the sources read	Not in the sources read
Built	October 1955 to TS13045, built Sept 1956	TS13046 built Sept 1956 to TS22013 built 17 Sept 1957 Built, Disc Brakes Several figures in print. TS13046 built Sept 1956 to TS22013 built 17 Sept 1957One good source: Graham Robson (essay "15 Years of Evolution"), Triumph TR2 – TR3/3A, TR4/4A – TR5, TR250 1953–1968 Parts & Accessories Catalogue, Rimmer Bros, edn 2.1 (source code TR2512), Part 1⁠source 21 from late 1956Good sources agree: TR Register, Buyer's guide pages (group): "Buyer's Guide" (general), "Triumph TR3 Buyers Guide", "Triumph TR3A Buyers Guide", Girling front disc brakes standardised⁠source 2 October 1956Good sources agree: Motor Sport, "The cars at Earls Court", Nov 1956, p. 14, shown with Girling disc brakes at Earls Court⁠source 20	September 1957 to October 1961 Built, TR3A Good sources disagree. September 1957 to October 1961Disputed: TR Register, Buyer's guide pages (group): "Buyer's Guide" (general), "Triumph TR3 Buyers Guide", "Triumph TR3A Buyers Guide"⁠source 2 TS22014 (Sept 1957) to TS83572 (Oct 1961)Disputed: Carl Musson (production dates and numbers) and Ken Streeter (spotter's guide), "TR3 (1955-1962)": the history, "Production Dates and Numbers" and "The TR2-TR3 Series Spotter's Guide", Vintage Triumph Register⁠source 1 TS22014 (17 Sept 1957) to TS82347, built Jan 1962Disputed: Graham Robson (essay "15 Years of Evolution"), Triumph TR2 – TR3/3A, TR4/4A – TR5, TR250 1953–1968 Parts & Accessories Catalogue, Rimmer Bros, edn 2.1 (source code TR2512), Part 1⁠source 21 09/1957 to 01/1962 (TS 22014 - TS 82436)Disputed: Bruno Dwinger, "TR 2 bis TR 3 B: Geschichte, Typen und Kaufberatung", TR-Register Deutschland, Nov 2008, 10 pp. (PDF)⁠source 8 to October 1961Disputed: TR Drivers Club, "Triumph TR3B" (updated March 2015), the last TR3A⁠source 3	TSF1 built 1 Mar 1962 to TSF530 built 19 Sept 1962 Built, TSF Several figures in print. TSF1 built 1 Mar 1962 to TSF530 built 19 Sept 1962Good sources agree: Graham Robson (essay "15 Years of Evolution"), Triumph TR2 – TR3/3A, TR4/4A – TR5, TR250 1953–1968 Parts & Accessories Catalogue, Rimmer Bros, edn 2.1 (source code TR2512), Part 1⁠source 21 TSF1 Mar 1962 to TSF530 Sept 1962Good sources agree: Carl Musson (production dates and numbers) and Ken Streeter (spotter's guide), "TR3 (1955-1962)": the history, "Production Dates and Numbers" and "The TR2-TR3 Series Spotter's Guide", Vintage Triumph Register⁠source 1	TCF1 built 8 May 1962 to TCF2804 built Dec 1962 Built, TCF Several figures in print. TCF1 built 8 May 1962 to TCF2804 built Dec 1962Good sources agree: Graham Robson (essay "15 Years of Evolution"), Triumph TR2 – TR3/3A, TR4/4A – TR5, TR250 1953–1968 Parts & Accessories Catalogue, Rimmer Bros, edn 2.1 (source code TR2512), Part 1⁠source 21 TCF1 May 1962 to TCF2804 Oct 1962Good sources agree: Carl Musson (production dates and numbers) and Ken Streeter (spotter's guide), "TR3 (1955-1962)": the history, "Production Dates and Numbers" and "The TR2-TR3 Series Spotter's Guide", Vintage Triumph Register⁠source 1
Coachbuilders	Not in the sources read	Mulliners (bodies with their base frame welded in)	Not in the sources read	Not in the sources read	Not in the sources read
Built at	final assembly at Standard-Triumph's Canley plant; bodies by Mulliners in Birmingham	final assembly at Standard-Triumph's Canley plant	Canley	Birmingham Built at, TSF Several figures in print. BirminghamGood sources agree: Graham Robson (essay "15 Years of Evolution"), Triumph TR2 – TR3/3A, TR4/4A – TR5, TR250 1953–1968 Parts & Accessories Catalogue, Rimmer Bros, edn 2.1 (source code TR2512), Part 1⁠source 21 the Forward Radiator CompanyGood sources agree: TR Drivers Club, "Triumph TR3B" (updated March 2015)⁠source 3	Birmingham Built at, TCF Several figures in print. BirminghamGood sources agree: Graham Robson (essay "15 Years of Evolution"), Triumph TR2 – TR3/3A, TR4/4A – TR5, TR250 1953–1968 Parts & Accessories Catalogue, Rimmer Bros, edn 2.1 (source code TR2512), Part 1⁠source 21 the Forward Radiator CompanyGood sources agree: TR Drivers Club, "Triumph TR3B" (updated March 2015)⁠source 3

Contents

Engine

Sources for Engine, by version

Engine maker: Drum Brakes: One good source.Bruno Dwinger, "TR 2 bis TR 3 B: Geschichte, Typen und Kaufberatung", TR-Register Deutschland, Nov 2008, 10 pp. (PDF)⁠source 8; Disc Brakes: One good source.Bruno Dwinger, "TR 2 bis TR 3 B: Geschichte, Typen und Kaufberatung", TR-Register Deutschland, Nov 2008, 10 pp. (PDF)⁠source 8; TR3A: One good source.Bruno Dwinger, "TR 2 bis TR 3 B: Geschichte, Typen und Kaufberatung", TR-Register Deutschland, Nov 2008, 10 pp. (PDF)⁠source 8; TSF: One good source.Bruno Dwinger, "TR 2 bis TR 3 B: Geschichte, Typen und Kaufberatung", TR-Register Deutschland, Nov 2008, 10 pp. (PDF)⁠source 8; TCF: One good source.Bruno Dwinger, "TR 2 bis TR 3 B: Geschichte, Typen und Kaufberatung", TR-Register Deutschland, Nov 2008, 10 pp. (PDF)⁠source 8
Capacity: Drum Brakes: One good source.83 x 92 mm, wet liners. TR Register, Buyer's guide pages (group): "Buyer's Guide" (general), "Triumph TR3 Buyers Guide", "Triumph TR3A Buyers Guide"⁠source 2; Disc Brakes: Good sources agree.83 x 92 mm. The Autocar, "The Autocar Road Test No. 1622 — Triumph TR3 Hardtop", 11 Jan 1957, pp. 41–43⁠source 4; Wayne Thoms, "Triumph TR-3" (An MT Research Report), Motor Trend, Sep 1957, p. 36ff⁠source 7; TR3A: Several figures in print.Len Griffing, "SCI Road Test — Triumph TR3", with the Standard-Triumph Motor Co. Inc. advertisement in the same issue, Sports Cars Illustrated, Mar 1958, pp. 30–31, 58⁠source 15; TR Register, Buyer's guide pages (group): "Buyer's Guide" (general), "Triumph TR3 Buyers Guide", "Triumph TR3A Buyers Guide"⁠source 2; Bruno Dwinger, "TR 2 bis TR 3 B: Geschichte, Typen und Kaufberatung", TR-Register Deutschland, Nov 2008, 10 pp. (PDF)⁠source 8; TSF: Good sources agree."they all had the 1991cc engine". TR Drivers Club, "Triumph TR3B" (updated March 2015)⁠source 3; Bruno Dwinger, "TR 2 bis TR 3 B: Geschichte, Typen und Kaufberatung", TR-Register Deutschland, Nov 2008, 10 pp. (PDF)⁠source 8; TCF: Good sources agree."the 2138cc TR4 power plant". TR Drivers Club, "Triumph TR3B" (updated March 2015)⁠source 3; Bruno Dwinger, "TR 2 bis TR 3 B: Geschichte, Typen und Kaufberatung", TR-Register Deutschland, Nov 2008, 10 pp. (PDF)⁠source 8
Engine position: Drum Brakes: One good source.Wayne Thoms, "Triumph TR-3" (An MT Research Report), Motor Trend, Sep 1957, p. 36ff⁠source 7; Disc Brakes: One good source.Wayne Thoms, "Triumph TR-3" (An MT Research Report), Motor Trend, Sep 1957, p. 36ff⁠source 7; TR3A: One good source.Wayne Thoms, "Triumph TR-3" (An MT Research Report), Motor Trend, Sep 1957, p. 36ff⁠source 7; TSF: One good source.Wayne Thoms, "Triumph TR-3" (An MT Research Report), Motor Trend, Sep 1957, p. 36ff⁠source 7; TCF: One good source.Wayne Thoms, "Triumph TR-3" (An MT Research Report), Motor Trend, Sep 1957, p. 36ff⁠source 7
Block: Drum Brakes: One good source.Bruno Dwinger, "TR 2 bis TR 3 B: Geschichte, Typen und Kaufberatung", TR-Register Deutschland, Nov 2008, 10 pp. (PDF)⁠source 8; Disc Brakes: One good source.Bruno Dwinger, "TR 2 bis TR 3 B: Geschichte, Typen und Kaufberatung", TR-Register Deutschland, Nov 2008, 10 pp. (PDF)⁠source 8; TR3A: One good source.Bruno Dwinger, "TR 2 bis TR 3 B: Geschichte, Typen und Kaufberatung", TR-Register Deutschland, Nov 2008, 10 pp. (PDF)⁠source 8; TSF: One good source.Bruno Dwinger, "TR 2 bis TR 3 B: Geschichte, Typen und Kaufberatung", TR-Register Deutschland, Nov 2008, 10 pp. (PDF)⁠source 8; TCF: One good source.Bruno Dwinger, "TR 2 bis TR 3 B: Geschichte, Typen und Kaufberatung", TR-Register Deutschland, Nov 2008, 10 pp. (PDF)⁠source 8
Cylinder head: Drum Brakes: One good source.Bruno Dwinger, "TR 2 bis TR 3 B: Geschichte, Typen und Kaufberatung", TR-Register Deutschland, Nov 2008, 10 pp. (PDF)⁠source 8; Disc Brakes: One good source.Bruno Dwinger, "TR 2 bis TR 3 B: Geschichte, Typen und Kaufberatung", TR-Register Deutschland, Nov 2008, 10 pp. (PDF)⁠source 8; TR3A: One good source.Bruno Dwinger, "TR 2 bis TR 3 B: Geschichte, Typen und Kaufberatung", TR-Register Deutschland, Nov 2008, 10 pp. (PDF)⁠source 8; TSF: One good source.Bruno Dwinger, "TR 2 bis TR 3 B: Geschichte, Typen und Kaufberatung", TR-Register Deutschland, Nov 2008, 10 pp. (PDF)⁠source 8; TCF: One good source.Bruno Dwinger, "TR 2 bis TR 3 B: Geschichte, Typen und Kaufberatung", TR-Register Deutschland, Nov 2008, 10 pp. (PDF)⁠source 8
Valve gear: Drum Brakes: One good source.Bruno Dwinger, "TR 2 bis TR 3 B: Geschichte, Typen und Kaufberatung", TR-Register Deutschland, Nov 2008, 10 pp. (PDF)⁠source 8; Disc Brakes: Several figures in print.The Autocar, "The Autocar Road Test No. 1622 — Triumph TR3 Hardtop", 11 Jan 1957, pp. 41–43⁠source 4; Bill Boddy ("W. B."), "Triumph TR3 Road-Test", with the data panel "The Triumph TR3 Hard-Top" (p. 14), Motor Sport, Jul 1957, pp. 13–14⁠source 10; Bruno Dwinger, "TR 2 bis TR 3 B: Geschichte, Typen und Kaufberatung", TR-Register Deutschland, Nov 2008, 10 pp. (PDF)⁠source 8; TR3A: Several figures in print.Len Griffing, "SCI Road Test — Triumph TR3", with the Standard-Triumph Motor Co. Inc. advertisement in the same issue, Sports Cars Illustrated, Mar 1958, pp. 30–31, 58⁠source 15; Bruno Dwinger, "TR 2 bis TR 3 B: Geschichte, Typen und Kaufberatung", TR-Register Deutschland, Nov 2008, 10 pp. (PDF)⁠source 8; TSF: One good source.Bruno Dwinger, "TR 2 bis TR 3 B: Geschichte, Typen und Kaufberatung", TR-Register Deutschland, Nov 2008, 10 pp. (PDF)⁠source 8; TCF: One good source.Bruno Dwinger, "TR 2 bis TR 3 B: Geschichte, Typen und Kaufberatung", TR-Register Deutschland, Nov 2008, 10 pp. (PDF)⁠source 8
Compression ratio: Disc Brakes: Good sources agree.The Autocar, "The Autocar Road Test No. 1622 — Triumph TR3 Hardtop", 11 Jan 1957, pp. 41–43⁠source 4; Wayne Thoms, "Triumph TR-3" (An MT Research Report), Motor Trend, Sep 1957, p. 36ff⁠source 7
Fuel system: Drum Brakes: One good source.TR Register, Buyer's guide pages (group): "Buyer's Guide" (general), "Triumph TR3 Buyers Guide", "Triumph TR3A Buyers Guide"⁠source 2; Disc Brakes: One good source.TR Register, Buyer's guide pages (group): "Buyer's Guide" (general), "Triumph TR3 Buyers Guide", "Triumph TR3A Buyers Guide"⁠source 2; TR3A: One good source.TR Register, Buyer's guide pages (group): "Buyer's Guide" (general), "Triumph TR3 Buyers Guide", "Triumph TR3A Buyers Guide"⁠source 2; TSF: One good source.TR Register, Buyer's guide pages (group): "Buyer's Guide" (general), "Triumph TR3 Buyers Guide", "Triumph TR3A Buyers Guide"⁠source 2; TCF: One good source.Bruno Dwinger, "TR 2 bis TR 3 B: Geschichte, Typen und Kaufberatung", TR-Register Deutschland, Nov 2008, 10 pp. (PDF)⁠source 8
Carburettors: Drum Brakes: Several figures in print.TR Register, Buyer's guide pages (group): "Buyer's Guide" (general), "Triumph TR3 Buyers Guide", "Triumph TR3A Buyers Guide"⁠source 2; Carl Musson (production dates and numbers) and Ken Streeter (spotter's guide), "TR3 (1955-1962)": the history, "Production Dates and Numbers" and "The TR2-TR3 Series Spotter's Guide", Vintage Triumph Register⁠source 1
Cooling: Drum Brakes: One good source.Bruno Dwinger, "TR 2 bis TR 3 B: Geschichte, Typen und Kaufberatung", TR-Register Deutschland, Nov 2008, 10 pp. (PDF)⁠source 8; Disc Brakes: One good source.Bruno Dwinger, "TR 2 bis TR 3 B: Geschichte, Typen und Kaufberatung", TR-Register Deutschland, Nov 2008, 10 pp. (PDF)⁠source 8; TR3A: One good source.Bruno Dwinger, "TR 2 bis TR 3 B: Geschichte, Typen und Kaufberatung", TR-Register Deutschland, Nov 2008, 10 pp. (PDF)⁠source 8; TSF: One good source.Bruno Dwinger, "TR 2 bis TR 3 B: Geschichte, Typen und Kaufberatung", TR-Register Deutschland, Nov 2008, 10 pp. (PDF)⁠source 8; TCF: One good source.Bruno Dwinger, "TR 2 bis TR 3 B: Geschichte, Typen und Kaufberatung", TR-Register Deutschland, Nov 2008, 10 pp. (PDF)⁠source 8
Cylinder layout: Drum Brakes: One good source.Bruno Dwinger, "TR 2 bis TR 3 B: Geschichte, Typen und Kaufberatung", TR-Register Deutschland, Nov 2008, 10 pp. (PDF)⁠source 8; Disc Brakes: One good source.Bruno Dwinger, "TR 2 bis TR 3 B: Geschichte, Typen und Kaufberatung", TR-Register Deutschland, Nov 2008, 10 pp. (PDF)⁠source 8; TR3A: One good source.Len Griffing, "SCI Road Test — Triumph TR3", with the Standard-Triumph Motor Co. Inc. advertisement in the same issue, Sports Cars Illustrated, Mar 1958, pp. 30–31, 58⁠source 15; TSF: One good source.Bruno Dwinger, "TR 2 bis TR 3 B: Geschichte, Typen und Kaufberatung", TR-Register Deutschland, Nov 2008, 10 pp. (PDF)⁠source 8; TCF: One good source.Bruno Dwinger, "TR 2 bis TR 3 B: Geschichte, Typen und Kaufberatung", TR-Register Deutschland, Nov 2008, 10 pp. (PDF)⁠source 8
Aspiration: Drum Brakes: One good source.TR Register, Buyer's guide pages (group): "Buyer's Guide" (general), "Triumph TR3 Buyers Guide", "Triumph TR3A Buyers Guide"⁠source 2; Disc Brakes: One good source.TR Register, Buyer's guide pages (group): "Buyer's Guide" (general), "Triumph TR3 Buyers Guide", "Triumph TR3A Buyers Guide"⁠source 2; TR3A: One good source.TR Register, Buyer's guide pages (group): "Buyer's Guide" (general), "Triumph TR3 Buyers Guide", "Triumph TR3A Buyers Guide"⁠source 2; TSF: One good source.TR Register, Buyer's guide pages (group): "Buyer's Guide" (general), "Triumph TR3 Buyers Guide", "Triumph TR3A Buyers Guide"⁠source 2; TCF: One good source.Bruno Dwinger, "TR 2 bis TR 3 B: Geschichte, Typen und Kaufberatung", TR-Register Deutschland, Nov 2008, 10 pp. (PDF)⁠source 8
Fuel: Drum Brakes: One good source.Bill Boddy ("W. B."), "Triumph TR3 Road-Test", with the data panel "The Triumph TR3 Hard-Top" (p. 14), Motor Sport, Jul 1957, pp. 13–14⁠source 10; Disc Brakes: One good source.Bill Boddy ("W. B."), "Triumph TR3 Road-Test", with the data panel "The Triumph TR3 Hard-Top" (p. 14), Motor Sport, Jul 1957, pp. 13–14⁠source 10; TR3A: One good source.Bill Boddy ("W. B."), "Triumph TR3 Road-Test", with the data panel "The Triumph TR3 Hard-Top" (p. 14), Motor Sport, Jul 1957, pp. 13–14⁠source 10; TSF: One good source.Bill Boddy ("W. B."), "Triumph TR3 Road-Test", with the data panel "The Triumph TR3 Hard-Top" (p. 14), Motor Sport, Jul 1957, pp. 13–14⁠source 10; TCF: One good source.Bill Boddy ("W. B."), "Triumph TR3 Road-Test", with the data panel "The Triumph TR3 Hard-Top" (p. 14), Motor Sport, Jul 1957, pp. 13–14⁠source 10
Ignition: Drum Brakes: One good source.The Autocar, "The Autocar Road Test No. 1622 — Triumph TR3 Hardtop", 11 Jan 1957, pp. 41–43⁠source 4; Disc Brakes: One good source.The Autocar, "The Autocar Road Test No. 1622 — Triumph TR3 Hardtop", 11 Jan 1957, pp. 41–43⁠source 4; TR3A: One good source.The Autocar, "The Autocar Road Test No. 1622 — Triumph TR3 Hardtop", 11 Jan 1957, pp. 41–43⁠source 4; TSF: One good source.The Autocar, "The Autocar Road Test No. 1622 — Triumph TR3 Hardtop", 11 Jan 1957, pp. 41–43⁠source 4
Cycle: Drum Brakes: One good source.Bruno Dwinger, "TR 2 bis TR 3 B: Geschichte, Typen und Kaufberatung", TR-Register Deutschland, Nov 2008, 10 pp. (PDF)⁠source 8; Disc Brakes: One good source.Bruno Dwinger, "TR 2 bis TR 3 B: Geschichte, Typen und Kaufberatung", TR-Register Deutschland, Nov 2008, 10 pp. (PDF)⁠source 8; TR3A: One good source.Bruno Dwinger, "TR 2 bis TR 3 B: Geschichte, Typen und Kaufberatung", TR-Register Deutschland, Nov 2008, 10 pp. (PDF)⁠source 8; TSF: One good source.Bruno Dwinger, "TR 2 bis TR 3 B: Geschichte, Typen und Kaufberatung", TR-Register Deutschland, Nov 2008, 10 pp. (PDF)⁠source 8; TCF: One good source.Bruno Dwinger, "TR 2 bis TR 3 B: Geschichte, Typen und Kaufberatung", TR-Register Deutschland, Nov 2008, 10 pp. (PDF)⁠source 8
Lubrication: Drum Brakes: One good source.The Autocar, "The Autocar Road Test No. 1622 — Triumph TR3 Hardtop", 11 Jan 1957, pp. 41–43⁠source 4; Disc Brakes: One good source.The Autocar, "The Autocar Road Test No. 1622 — Triumph TR3 Hardtop", 11 Jan 1957, pp. 41–43⁠source 4; TR3A: One good source.The Autocar, "The Autocar Road Test No. 1622 — Triumph TR3 Hardtop", 11 Jan 1957, pp. 41–43⁠source 4; TSF: One good source.The Autocar, "The Autocar Road Test No. 1622 — Triumph TR3 Hardtop", 11 Jan 1957, pp. 41–43⁠source 4; TCF: One good source.The Autocar, "The Autocar Road Test No. 1622 — Triumph TR3 Hardtop", 11 Jan 1957, pp. 41–43⁠source 4

Engine, by version
Item	Drum Brakes	Disc Brakes	TR3A	TSF	TCF
Engine maker	Standard-Triumph	Standard-Triumph	Standard-Triumph	Standard-Triumph	Standard-Triumph
Capacity	1991 cc	1991 cc	1991 cc Capacity, TR3A Several figures in print. 1991 ccGood sources agree: Len Griffing, "SCI Road Test — Triumph TR3", with the Standard-Triumph Motor Co. Inc. advertisement in the same issue, Sports Cars Illustrated, Mar 1958, pp. 30–31, 58, 83 x 92 mm⁠source 15; TR Register, Buyer's guide pages (group): "Buyer's Guide" (general), "Triumph TR3 Buyers Guide", "Triumph TR3A Buyers Guide", 83 x 92 mm, wet liners⁠source 2 2138 ccGood sources agree: TR Register, Buyer's guide pages (group): "Buyer's Guide" (general), "Triumph TR3 Buyers Guide", "Triumph TR3A Buyers Guide", optional from 1959 ("as TR4")⁠source 2; Bruno Dwinger, "TR 2 bis TR 3 B: Geschichte, Typen und Kaufberatung", TR-Register Deutschland, Nov 2008, 10 pp. (PDF), 86 x 92 mm, 9:1, the larger engine option⁠source 8	1991 cc	2138 cc
Engine position	Front	Front	Front	Front	Front
Block	Cast iron	Cast iron	Cast iron	Cast iron	Cast iron
Cylinder head	Cast iron	Cast iron	Cast iron	Cast iron	Cast iron
Valve gear	OHV, 2 valves per cylinder	OHV, 2 valves per cylinder Valve gear, Disc Brakes Several figures in print. OHV, 2 valves per cylinderOne good source: Bruno Dwinger, "TR 2 bis TR 3 B: Geschichte, Typen und Kaufberatung", TR-Register Deutschland, Nov 2008, 10 pp. (PDF)⁠source 8 overhead valves and pushrodsGood sources agree: The Autocar, "The Autocar Road Test No. 1622 — Triumph TR3 Hardtop", 11 Jan 1957, pp. 41–43⁠source 4 push-rod-operated o.h. valvesGood sources agree: Bill Boddy ("W. B."), "Triumph TR3 Road-Test", with the data panel "The Triumph TR3 Hard-Top" (p. 14), Motor Sport, Jul 1957, pp. 13–14⁠source 10	OHV, 2 valves per cylinder Valve gear, TR3A Several figures in print. OHV, 2 valves per cylinderOne good source: Bruno Dwinger, "TR 2 bis TR 3 B: Geschichte, Typen und Kaufberatung", TR-Register Deutschland, Nov 2008, 10 pp. (PDF)⁠source 8 push rod ohvOne good source: Len Griffing, "SCI Road Test — Triumph TR3", with the Standard-Triumph Motor Co. Inc. advertisement in the same issue, Sports Cars Illustrated, Mar 1958, pp. 30–31, 58⁠source 15	OHV, 2 valves per cylinder	OHV, 2 valves per cylinder
Compression ratio	Not in the sources read	8.5:1	Not in the sources read	Not in the sources read	Not in the sources read
Fuel system	Twin 1¾" SU Carbs	Twin 1¾" SU Carbs	Twin 1¾" SU Carbs	Twin 1¾" SU Carbs	two SU HS6 carburettors
Carburettors	twin 1¾ in SU Carburettors, Drum Brakes Several figures in print. twin 1¾ in SUGood sources agree: TR Register, Buyer's guide pages (group): "Buyer's Guide" (general), "Triumph TR3 Buyers Guide", "Triumph TR3A Buyers Guide"⁠source 2 1¾ in stud-mounted SU H6Good sources agree: Carl Musson (production dates and numbers) and Ken Streeter (spotter's guide), "TR3 (1955-1962)": the history, "Production Dates and Numbers" and "The TR2-TR3 Series Spotter's Guide", Vintage Triumph Register, from TS8637⁠source 1	Not in the sources read	Not in the sources read	Not in the sources read	Not in the sources read
Cooling	Water-cooled	Water-cooled	Water-cooled	Water-cooled	Water-cooled
Cylinder layout	Inline	Inline	In-line 4	Inline	Inline
Aspiration	Naturally Aspirated	Naturally Aspirated	Naturally Aspirated	Naturally Aspirated	Naturally Aspirated
Fuel	Petrol	Petrol	Petrol	Petrol	Petrol
Ignition	Coil and distributor	Coil and distributor	Coil and distributor	Coil and distributor	Not in the sources read
Cycle	Four-stroke	Four-stroke	Four-stroke	Four-stroke	Four-stroke
Lubrication	Wet Sump	Wet Sump	Wet Sump	Wet Sump	Wet Sump

Contents

Performance

Sources for Performance, by version

Power: Drum Brakes: Several figures in print.Motor Sport, "Sports and high-performance cars at Earls Court", with the list "Sports Cars Costing Under £1,000 Inclusive of P.T.", Nov 1955, p. 16⁠source 9; TR Register, Buyer's guide pages (group): "Buyer's Guide" (general), "Triumph TR3 Buyers Guide", "Triumph TR3A Buyers Guide"⁠source 2; Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, December 1955, Dec 1955 (vol. I no. 9)⁠source 11; Karl Ludvigsen, "Triumph gets a going over", Sports Cars Illustrated, Mar 1956, pp. 36–38, 56⁠source 23; Disc Brakes: Good sources agree.At 5,000 rpm, high-port head. The Autocar, "The Autocar Road Test No. 1622 — Triumph TR3 Hardtop", 11 Jan 1957, pp. 41–43⁠source 4; Karl Ludvigsen, "Disc Braked TR-3", with the Standard-Triumph advertisement in the same issue, Sports Cars Illustrated, Apr 1957, pp. 16–19, 58⁠source 5; Wayne Thoms, "Triumph TR-3" (An MT Research Report), Motor Trend, Sep 1957, p. 36ff⁠source 7; Bill Boddy ("W. B."), "Triumph TR3 Road-Test", with the data panel "The Triumph TR3 Hard-Top" (p. 14), Motor Sport, Jul 1957, pp. 13–14⁠source 10; TR3A: Several figures in print.TR Register, Buyer's guide pages (group): "Buyer's Guide" (general), "Triumph TR3 Buyers Guide", "Triumph TR3A Buyers Guide"⁠source 2; Len Griffing, "SCI Road Test — Triumph TR3", with the Standard-Triumph Motor Co. Inc. advertisement in the same issue, Sports Cars Illustrated, Mar 1958, pp. 30–31, 58⁠source 15; Bruno Dwinger, "TR 2 bis TR 3 B: Geschichte, Typen und Kaufberatung", TR-Register Deutschland, Nov 2008, 10 pp. (PDF)⁠source 8; TSF: One good source.At 5,000 rpm: the TR3A's rating; the TSF cars had the TR3A engine (VTR, TR Drivers Club). TR Register, Buyer's guide pages (group): "Buyer's Guide" (general), "Triumph TR3 Buyers Guide", "Triumph TR3A Buyers Guide"⁠source 2; TCF: Several figures in print.Bill Boddy ("W. B."), "The new Triumph TR4", Motor Sport, Sep 1961, p. 17⁠source 24; Dennis May, "Technical Report" on the TR-4 (cover story), Car and Driver, Oct 1961, pp. 19–23⁠source 12; Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, September 1961 (TR-4 special issue), Sep 1961 (vol. VII no. 9)⁠source 25; Bruno Dwinger, "TR 2 bis TR 3 B: Geschichte, Typen und Kaufberatung", TR-Register Deutschland, Nov 2008, 10 pp. (PDF)⁠source 8; Wikipedia (EN), "Triumph TR3", 2026⁠source 17
Torque: Drum Brakes: One good source.At 3,000 rpm. TR Register, Buyer's guide pages (group): "Buyer's Guide" (general), "Triumph TR3 Buyers Guide", "Triumph TR3A Buyers Guide"⁠source 2; Disc Brakes: Several figures in print.The Autocar, "The Autocar Road Test No. 1622 — Triumph TR3 Hardtop", 11 Jan 1957, pp. 41–43⁠source 4; Wayne Thoms, "Triumph TR-3" (An MT Research Report), Motor Trend, Sep 1957, p. 36ff⁠source 7; Karl Ludvigsen, "Disc Braked TR-3", with the Standard-Triumph advertisement in the same issue, Sports Cars Illustrated, Apr 1957, pp. 16–19, 58⁠source 5; TR3A: Several figures in print.TR Register, Buyer's guide pages (group): "Buyer's Guide" (general), "Triumph TR3 Buyers Guide", "Triumph TR3A Buyers Guide"⁠source 2; Len Griffing, "SCI Road Test — Triumph TR3", with the Standard-Triumph Motor Co. Inc. advertisement in the same issue, Sports Cars Illustrated, Mar 1958, pp. 30–31, 58⁠source 15; TSF: One good source.At 3,000 rpm: the TR3A's figure; the TSF cars had the TR3A engine. TR Register, Buyer's guide pages (group): "Buyer's Guide" (general), "Triumph TR3 Buyers Guide", "Triumph TR3A Buyers Guide"⁠source 2; TCF: Good sources agree."Torque goes up from 118 to 127 pound-feet": the TR4 engine; no TCF-specific figure. Dennis May, "Technical Report" on the TR-4 (cover story), Car and Driver, Oct 1961, pp. 19–23⁠source 12; Bruno Dwinger, "TR 2 bis TR 3 B: Geschichte, Typen und Kaufberatung", TR-Register Deutschland, Nov 2008, 10 pp. (PDF)⁠source 8
Top speed: Disc Brakes: Several figures in print.The Autocar, "The Autocar Road Test No. 1622 — Triumph TR3 Hardtop", 11 Jan 1957, pp. 41–43⁠source 4; Karl Ludvigsen, "Disc Braked TR-3", with the Standard-Triumph advertisement in the same issue, Sports Cars Illustrated, Apr 1957, pp. 16–19, 58⁠source 5; TR3A: Several figures in print.Len Griffing, "SCI Road Test — Triumph TR3", with the Standard-Triumph Motor Co. Inc. advertisement in the same issue, Sports Cars Illustrated, Mar 1958, pp. 30–31, 58⁠source 15; TR Register, Buyer's guide pages (group): "Buyer's Guide" (general), "Triumph TR3 Buyers Guide", "Triumph TR3A Buyers Guide"⁠source 2; Motor Trend, Imported-car guide, May 1960⁠source 19
0–60 mph: Disc Brakes: Several figures in print.The Autocar, "The Autocar Road Test No. 1622 — Triumph TR3 Hardtop", 11 Jan 1957, pp. 41–43⁠source 4; Karl Ludvigsen, "Disc Braked TR-3", with the Standard-Triumph advertisement in the same issue, Sports Cars Illustrated, Apr 1957, pp. 16–19, 58⁠source 5; Wayne Thoms, "Triumph TR-3" (An MT Research Report), Motor Trend, Sep 1957, p. 36ff⁠source 7; TR3A: Several figures in print.Len Griffing, "SCI Road Test — Triumph TR3", with the Standard-Triumph Motor Co. Inc. advertisement in the same issue, Sports Cars Illustrated, Mar 1958, pp. 30–31, 58⁠source 15; Motor Trend, Imported-car guide, May 1960⁠source 19; TR Register, Buyer's guide pages (group): "Buyer's Guide" (general), "Triumph TR3 Buyers Guide", "Triumph TR3A Buyers Guide"⁠source 2; Wikipedia (EN), "Triumph TR3", 2026⁠source 17
Standing start: TR3A: One good source.Quarter mile, at 74 mph. Len Griffing, "SCI Road Test — Triumph TR3", with the Standard-Triumph Motor Co. Inc. advertisement in the same issue, Sports Cars Illustrated, Mar 1958, pp. 30–31, 58⁠source 15

Performance, by version
Item	Drum Brakes	Disc Brakes	TR3A	TSF	TCF
Power	95 bhp Power, Drum Brakes Several figures in print. 95 bhpGood sources agree: Motor Sport, "Sports and high-performance cars at Earls Court", with the list "Sports Cars Costing Under £1,000 Inclusive of P.T.", Nov 1955, p. 16, at 4,800 rpm ("95 b.h.p. at the same crankshaft speed"); UK launch rating, October 1955⁠source 9; TR Register, Buyer's guide pages (group): "Buyer's Guide" (general), "Triumph TR3 Buyers Guide", "Triumph TR3A Buyers Guide", at 4,800 rpm⁠source 2 100 hpGood sources agree: Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, December 1955, Dec 1955 (vol. I no. 9), "100 horsepower", the US announcement; no rpm given⁠source 11; Karl Ludvigsen, "Triumph gets a going over", Sports Cars Illustrated, Mar 1956, pp. 36–38, 56, at 5,000 rpm, claimed for "their first TR3" in early 1956, before the high-port head⁠source 23; TR Register, Buyer's guide pages (group): "Buyer's Guide" (general), "Triumph TR3 Buyers Guide", "Triumph TR3A Buyers Guide", "nominal", once production cars had the high-port head from mid-1956 (engine TS12606E, VTR)⁠source 2	100 bhp	100 bhp Power, TR3A Several figures in print. 100 bhpGood sources agree: TR Register, Buyer's guide pages (group): "Buyer's Guide" (general), "Triumph TR3 Buyers Guide", "Triumph TR3A Buyers Guide", at 5,000 rpm, 1,991 cc⁠source 2; Len Griffing, "SCI Road Test — Triumph TR3", with the Standard-Triumph Motor Co. Inc. advertisement in the same issue, Sports Cars Illustrated, Mar 1958, pp. 30–31, 58, at 5,000 rpm⁠source 15 100 PSOne good source: Bruno Dwinger, "TR 2 bis TR 3 B: Geschichte, Typen und Kaufberatung", TR-Register Deutschland, Nov 2008, 10 pp. (PDF), at 4,600 rpm; the 2,138 cc option⁠source 8	100 bhp	100 bhp Power, TCF Several figures in print. 100 bhpGood sources agree: Bill Boddy ("W. B."), "The new Triumph TR4", Motor Sport, Sep 1961, p. 17, at 4,600 rpm: the TR4 engine's rating (net, per Car and Driver); no TCF-specific rating found⁠source 24; Dennis May, "Technical Report" on the TR-4 (cover story), Car and Driver, Oct 1961, pp. 19–23, "the TR-3's 100 bhp gross and the TR-4's 100 net", at 4,600 rpm: the TR4 engine⁠source 12 105 bhpOne good source: Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, September 1961 (TR-4 special issue), Sep 1961 (vol. VII no. 9), "Maximum Brake HP. 105 @ 4750 rpm": the TR-4 specification⁠source 25; Wikipedia (EN), "Triumph TR3", 2026, at 4,650 rpm, uncited⁠source 17 100 PSNot yet confirmed: Bruno Dwinger, "TR 2 bis TR 3 B: Geschichte, Typen und Kaufberatung", TR-Register Deutschland, Nov 2008, 10 pp. (PDF), at 4,800 rpm, the TCF⁠source 8
Torque	117 lb ft	117.5 lb ft Torque, Disc Brakes Several figures in print. 117.5 lb ftGood sources agree: The Autocar, "The Autocar Road Test No. 1622 — Triumph TR3 Hardtop", 11 Jan 1957, pp. 41–43, at 3,000 rpm⁠source 4; Wayne Thoms, "Triumph TR-3" (An MT Research Report), Motor Trend, Sep 1957, p. 36ff, at 3,000 rpm⁠source 7 118 lb ftOne good source: Karl Ludvigsen, "Disc Braked TR-3", with the Standard-Triumph advertisement in the same issue, Sports Cars Illustrated, Apr 1957, pp. 16–19, 58, at 3,000 rpm⁠source 5	117 lb ft Torque, TR3A Several figures in print. 117 lb ftOne good source: TR Register, Buyer's guide pages (group): "Buyer's Guide" (general), "Triumph TR3 Buyers Guide", "Triumph TR3A Buyers Guide", at 3,000 rpm⁠source 2 118 lb ftOne good source: Len Griffing, "SCI Road Test — Triumph TR3", with the Standard-Triumph Motor Co. Inc. advertisement in the same issue, Sports Cars Illustrated, Mar 1958, pp. 30–31, 58, at 3,000 rpm⁠source 15	117 lb ft	127 lb ft
Top speed	Not in the sources read	102 mph Top speed, Disc Brakes Several figures in print. 102 mphOne good source: The Autocar, "The Autocar Road Test No. 1622 — Triumph TR3 Hardtop", 11 Jan 1957, pp. 41–43, mean, overdrive top; best 103⁠source 4 104.1 mphOne good source: Karl Ludvigsen, "Disc Braked TR-3", with the Standard-Triumph advertisement in the same issue, Sports Cars Illustrated, Apr 1957, pp. 16–19, 58, two-way mean in fourth; best 105.9⁠source 5	103 mph Top speed, TR3A Several figures in print. 103 mphOne good source: Len Griffing, "SCI Road Test — Triumph TR3", with the Standard-Triumph Motor Co. Inc. advertisement in the same issue, Sports Cars Illustrated, Mar 1958, pp. 30–31, 58, two-way; best 104⁠source 15 102 mphNot yet confirmed: TR Register, Buyer's guide pages (group): "Buyer's Guide" (general), "Triumph TR3 Buyers Guide", "Triumph TR3A Buyers Guide", TR3A performance table (source not named)⁠source 2 about 110 mphOne good source: Motor Trend, Imported-car guide, May 1960⁠source 19	Not in the sources read	Not in the sources read
0–60 mph	Not in the sources read	12.5 s 0–60 mph, Disc Brakes Several figures in print. 12.5 sOne good source: The Autocar, "The Autocar Road Test No. 1622 — Triumph TR3 Hardtop", 11 Jan 1957, pp. 41–43, 1956 TR3 hardtop with overdrive and wire wheels (SKV 656)⁠source 4 11.5 sOne good source: Karl Ludvigsen, "Disc Braked TR-3", with the Standard-Triumph advertisement in the same issue, Sports Cars Illustrated, Apr 1957, pp. 16–19, 58, test car with overdrive and wire wheels; 10.9 s using second overdrive⁠source 5 9.2 sOne good source: Wayne Thoms, "Triumph TR-3" (An MT Research Report), Motor Trend, Sep 1957, p. 36ff⁠source 7	12.6 s 0–60 mph, TR3A Several figures in print. 12.6 sOne good source: Len Griffing, "SCI Road Test — Triumph TR3", with the Standard-Triumph Motor Co. Inc. advertisement in the same issue, Sports Cars Illustrated, Mar 1958, pp. 30–31, 58, 1958 roadster, 4.11 axle, no overdrive⁠source 15 12 sOne good source: Motor Trend, Imported-car guide, May 1960, "factory-rated"⁠source 19; Wikipedia (EN), "Triumph TR3", 2026, Road & Track, June 1977 retrospective, as reported by Wikipedia⁠source 17 12.5 sNot yet confirmed: TR Register, Buyer's guide pages (group): "Buyer's Guide" (general), "Triumph TR3 Buyers Guide", "Triumph TR3A Buyers Guide", TR3A performance table (source not named)⁠source 2	Not in the sources read	Not in the sources read
Standing start	Not in the sources read	Not in the sources read	18.6 s	Not in the sources read	Not in the sources read

Contents

Running gear

Sources for Running gear, by version

Steering: Drum Brakes: Several figures in print.Standard-Triumph, Triumph TR2 Workshop Manual, with the TR3 supplement⁠source 16; Bruno Dwinger, "TR 2 bis TR 3 B: Geschichte, Typen und Kaufberatung", TR-Register Deutschland, Nov 2008, 10 pp. (PDF)⁠source 8; Wikipedia (EN), "Triumph TR3", 2026⁠source 17; Disc Brakes: Several figures in print.Karl Ludvigsen, "Disc Braked TR-3", with the Standard-Triumph advertisement in the same issue, Sports Cars Illustrated, Apr 1957, pp. 16–19, 58⁠source 5; Wayne Thoms, "Triumph TR-3" (An MT Research Report), Motor Trend, Sep 1957, p. 36ff⁠source 7; TR3A: Several figures in print.Len Griffing, "SCI Road Test — Triumph TR3", with the Standard-Triumph Motor Co. Inc. advertisement in the same issue, Sports Cars Illustrated, Mar 1958, pp. 30–31, 58⁠source 15; Standard-Triumph, Triumph TR2 Workshop Manual, with the TR3 supplement⁠source 16; TSF: One good source.The sidescreen TRs; the TR3B kept the TR3A chassis ("Most of the TR3a specification was unchanged", TR Drivers Club). Standard-Triumph, Triumph TR2 Workshop Manual, with the TR3 supplement⁠source 16; TCF: One good source.The sidescreen TRs; the TR3B kept the TR3A chassis ("Most of the TR3a specification was unchanged", TR Drivers Club). Standard-Triumph, Triumph TR2 Workshop Manual, with the TR3 supplement⁠source 16
Gearbox: Drum Brakes: One good source.Wayne Thoms, "Triumph TR-3" (An MT Research Report), Motor Trend, Sep 1957, p. 36ff⁠source 7; Disc Brakes: One good source.Wayne Thoms, "Triumph TR-3" (An MT Research Report), Motor Trend, Sep 1957, p. 36ff⁠source 7; TR3A: One good source.Wayne Thoms, "Triumph TR-3" (An MT Research Report), Motor Trend, Sep 1957, p. 36ff⁠source 7; TSF: One good source.Bruno Dwinger, "TR 2 bis TR 3 B: Geschichte, Typen und Kaufberatung", TR-Register Deutschland, Nov 2008, 10 pp. (PDF)⁠source 8; TCF: One good source.Bruno Dwinger, "TR 2 bis TR 3 B: Geschichte, Typen und Kaufberatung", TR-Register Deutschland, Nov 2008, 10 pp. (PDF)⁠source 8
Gears: Drum Brakes: One good source.Wayne Thoms, "Triumph TR-3" (An MT Research Report), Motor Trend, Sep 1957, p. 36ff⁠source 7; Disc Brakes: One good source.Wayne Thoms, "Triumph TR-3" (An MT Research Report), Motor Trend, Sep 1957, p. 36ff⁠source 7; TR3A: One good source.Wayne Thoms, "Triumph TR-3" (An MT Research Report), Motor Trend, Sep 1957, p. 36ff⁠source 7; TSF: One good source.Bruno Dwinger, "TR 2 bis TR 3 B: Geschichte, Typen und Kaufberatung", TR-Register Deutschland, Nov 2008, 10 pp. (PDF)⁠source 8; TCF: One good source.Bruno Dwinger, "TR 2 bis TR 3 B: Geschichte, Typen und Kaufberatung", TR-Register Deutschland, Nov 2008, 10 pp. (PDF)⁠source 8
Layout: Drum Brakes: One good source.Bruno Dwinger, "TR 2 bis TR 3 B: Geschichte, Typen und Kaufberatung", TR-Register Deutschland, Nov 2008, 10 pp. (PDF)⁠source 8; Disc Brakes: One good source.Bruno Dwinger, "TR 2 bis TR 3 B: Geschichte, Typen und Kaufberatung", TR-Register Deutschland, Nov 2008, 10 pp. (PDF)⁠source 8; TR3A: One good source.Bruno Dwinger, "TR 2 bis TR 3 B: Geschichte, Typen und Kaufberatung", TR-Register Deutschland, Nov 2008, 10 pp. (PDF)⁠source 8; TSF: One good source.Bruno Dwinger, "TR 2 bis TR 3 B: Geschichte, Typen und Kaufberatung", TR-Register Deutschland, Nov 2008, 10 pp. (PDF)⁠source 8; TCF: One good source.Bruno Dwinger, "TR 2 bis TR 3 B: Geschichte, Typen und Kaufberatung", TR-Register Deutschland, Nov 2008, 10 pp. (PDF)⁠source 8
Front brakes: Drum Brakes: Several figures in print.Carl Musson (production dates and numbers) and Ken Streeter (spotter's guide), "TR3 (1955-1962)": the history, "Production Dates and Numbers" and "The TR2-TR3 Series Spotter's Guide", Vintage Triumph Register⁠source 1; Standard-Triumph, Triumph TR2 Workshop Manual, with the TR3 supplement⁠source 16; Disc Brakes: Several figures in print.Carl Musson (production dates and numbers) and Ken Streeter (spotter's guide), "TR3 (1955-1962)": the history, "Production Dates and Numbers" and "The TR2-TR3 Series Spotter's Guide", Vintage Triumph Register⁠source 1; The Autocar, "The Autocar Road Test No. 1622 — Triumph TR3 Hardtop", 11 Jan 1957, pp. 41–43⁠source 4; Karl Ludvigsen, "Disc Braked TR-3", with the Standard-Triumph advertisement in the same issue, Sports Cars Illustrated, Apr 1957, pp. 16–19, 58⁠source 5; TR3A: Several figures in print.Len Griffing, "SCI Road Test — Triumph TR3", with the Standard-Triumph Motor Co. Inc. advertisement in the same issue, Sports Cars Illustrated, Mar 1958, pp. 30–31, 58⁠source 15; TR Register, Buyer's guide pages (group): "Buyer's Guide" (general), "Triumph TR3 Buyers Guide", "Triumph TR3A Buyers Guide"⁠source 2; TSF: One good source.The TR3A's, unchanged. TR Drivers Club, "Triumph TR3B" (updated March 2015)⁠source 3; TCF: One good source.The TR3A's, unchanged. TR Drivers Club, "Triumph TR3B" (updated March 2015)⁠source 3
Rear brakes: Drum Brakes: Several figures in print.Carl Musson (production dates and numbers) and Ken Streeter (spotter's guide), "TR3 (1955-1962)": the history, "Production Dates and Numbers" and "The TR2-TR3 Series Spotter's Guide", Vintage Triumph Register⁠source 1; Standard-Triumph, Triumph TR2 Workshop Manual, with the TR3 supplement⁠source 16; Disc Brakes: Several figures in print.The Autocar, "The Autocar Road Test No. 1622 — Triumph TR3 Hardtop", 11 Jan 1957, pp. 41–43⁠source 4; Motor Sport, "The cars at Earls Court", Nov 1956, p. 14⁠source 20; TR3A: Several figures in print.Carl Musson (production dates and numbers) and Ken Streeter (spotter's guide), "TR3 (1955-1962)": the history, "Production Dates and Numbers" and "The TR2-TR3 Series Spotter's Guide", Vintage Triumph Register⁠source 1; Len Griffing, "SCI Road Test — Triumph TR3", with the Standard-Triumph Motor Co. Inc. advertisement in the same issue, Sports Cars Illustrated, Mar 1958, pp. 30–31, 58⁠source 15
Front suspension: Drum Brakes: One good source.TR Register, Buyer's guide pages (group): "Buyer's Guide" (general), "Triumph TR3 Buyers Guide", "Triumph TR3A Buyers Guide"⁠source 2; Disc Brakes: One good source.TR Register, Buyer's guide pages (group): "Buyer's Guide" (general), "Triumph TR3 Buyers Guide", "Triumph TR3A Buyers Guide"⁠source 2; TR3A: Several figures in print.TR Register, Buyer's guide pages (group): "Buyer's Guide" (general), "Triumph TR3 Buyers Guide", "Triumph TR3A Buyers Guide"⁠source 2; Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, July 1959, Jul 1959 (vol. V no. 7)⁠source 18; Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, December 1959, Dec 1959⁠source 26; TSF: One good source.TR Register, Buyer's guide pages (group): "Buyer's Guide" (general), "Triumph TR3 Buyers Guide", "Triumph TR3A Buyers Guide"⁠source 2; TCF: One good source.The TR3A's; the TR3B kept the TR3A chassis (TR Drivers Club). TR Register, Buyer's guide pages (group): "Buyer's Guide" (general), "Triumph TR3 Buyers Guide", "Triumph TR3A Buyers Guide"⁠source 2
Rear suspension: Drum Brakes: One good source.TR Register, Buyer's guide pages (group): "Buyer's Guide" (general), "Triumph TR3 Buyers Guide", "Triumph TR3A Buyers Guide"⁠source 2; Disc Brakes: One good source.TR Register, Buyer's guide pages (group): "Buyer's Guide" (general), "Triumph TR3 Buyers Guide", "Triumph TR3A Buyers Guide"⁠source 2; TR3A: One good source.TR Register, Buyer's guide pages (group): "Buyer's Guide" (general), "Triumph TR3 Buyers Guide", "Triumph TR3A Buyers Guide"⁠source 2; TSF: One good source.TR Register, Buyer's guide pages (group): "Buyer's Guide" (general), "Triumph TR3 Buyers Guide", "Triumph TR3A Buyers Guide"⁠source 2; TCF: One good source.TR Register, Buyer's guide pages (group): "Buyer's Guide" (general), "Triumph TR3 Buyers Guide", "Triumph TR3A Buyers Guide"⁠source 2
Tyres: Disc Brakes: Good sources agree.The Autocar, "The Autocar Road Test No. 1622 — Triumph TR3 Hardtop", 11 Jan 1957, pp. 41–43⁠source 4; Wayne Thoms, "Triumph TR-3" (An MT Research Report), Motor Trend, Sep 1957, p. 36ff⁠source 7; TR3A: Several figures in print.TR Register, Buyer's guide pages (group): "Buyer's Guide" (general), "Triumph TR3 Buyers Guide", "Triumph TR3A Buyers Guide"⁠source 2; Len Griffing, "SCI Road Test — Triumph TR3", with the Standard-Triumph Motor Co. Inc. advertisement in the same issue, Sports Cars Illustrated, Mar 1958, pp. 30–31, 58⁠source 15; TSF: One good source.The TR3A, pressed steel disc wheels. TR Register, Buyer's guide pages (group): "Buyer's Guide" (general), "Triumph TR3 Buyers Guide", "Triumph TR3A Buyers Guide"⁠source 2
Wheels: Drum Brakes: Several figures in print.Motor Sport, "Sports and high-performance cars at Earls Court", with the list "Sports Cars Costing Under £1,000 Inclusive of P.T.", Nov 1955, p. 16⁠source 9; TR Register, Buyer's guide pages (group): "Buyer's Guide" (general), "Triumph TR3 Buyers Guide", "Triumph TR3A Buyers Guide"⁠source 2; Disc Brakes: Several figures in print.The Autocar, "The Autocar Road Test No. 1622 — Triumph TR3 Hardtop", 11 Jan 1957, pp. 41–43⁠source 4; TR Register, Buyer's guide pages (group): "Buyer's Guide" (general), "Triumph TR3 Buyers Guide", "Triumph TR3A Buyers Guide"⁠source 2; TR3A: One good source.TR Register, Buyer's guide pages (group): "Buyer's Guide" (general), "Triumph TR3 Buyers Guide", "Triumph TR3A Buyers Guide"⁠source 2; TSF: One good source.The TR3A's; the TR3B kept the TR3A specification ("Most of the TR3a specification was unchanged", TR Drivers Club). TR Register, Buyer's guide pages (group): "Buyer's Guide" (general), "Triumph TR3 Buyers Guide", "Triumph TR3A Buyers Guide"⁠source 2; TCF: One good source.The TR3A's; the TR3B kept the TR3A specification ("Most of the TR3a specification was unchanged", TR Drivers Club). TR Register, Buyer's guide pages (group): "Buyer's Guide" (general), "Triumph TR3 Buyers Guide", "Triumph TR3A Buyers Guide"⁠source 2
Final drive: Drum Brakes: One good source.Graham Robson (essay "15 Years of Evolution"), Triumph TR2 – TR3/3A, TR4/4A – TR5, TR250 1953–1968 Parts & Accessories Catalogue, Rimmer Bros, edn 2.1 (source code TR2512), Part 1⁠source 21; Disc Brakes: One good source.Graham Robson (essay "15 Years of Evolution"), Triumph TR2 – TR3/3A, TR4/4A – TR5, TR250 1953–1968 Parts & Accessories Catalogue, Rimmer Bros, edn 2.1 (source code TR2512), Part 1⁠source 21; TR3A: One good source.Graham Robson (essay "15 Years of Evolution"), Triumph TR2 – TR3/3A, TR4/4A – TR5, TR250 1953–1968 Parts & Accessories Catalogue, Rimmer Bros, edn 2.1 (source code TR2512), Part 1⁠source 21; TSF: One good source.Graham Robson (essay "15 Years of Evolution"), Triumph TR2 – TR3/3A, TR4/4A – TR5, TR250 1953–1968 Parts & Accessories Catalogue, Rimmer Bros, edn 2.1 (source code TR2512), Part 1⁠source 21
Clutch: Drum Brakes: One good source.Bruno Dwinger, "TR 2 bis TR 3 B: Geschichte, Typen und Kaufberatung", TR-Register Deutschland, Nov 2008, 10 pp. (PDF)⁠source 8; Disc Brakes: One good source.Bruno Dwinger, "TR 2 bis TR 3 B: Geschichte, Typen und Kaufberatung", TR-Register Deutschland, Nov 2008, 10 pp. (PDF)⁠source 8; TR3A: One good source.Bruno Dwinger, "TR 2 bis TR 3 B: Geschichte, Typen und Kaufberatung", TR-Register Deutschland, Nov 2008, 10 pp. (PDF)⁠source 8; TSF: One good source.Bruno Dwinger, "TR 2 bis TR 3 B: Geschichte, Typen und Kaufberatung", TR-Register Deutschland, Nov 2008, 10 pp. (PDF)⁠source 8
Starter: Drum Brakes: One good source.Bill Boddy ("W. B."), "Triumph TR3 Road-Test", with the data panel "The Triumph TR3 Hard-Top" (p. 14), Motor Sport, Jul 1957, pp. 13–14⁠source 10; Disc Brakes: One good source.Bill Boddy ("W. B."), "Triumph TR3 Road-Test", with the data panel "The Triumph TR3 Hard-Top" (p. 14), Motor Sport, Jul 1957, pp. 13–14⁠source 10; TR3A: One good source.Bill Boddy ("W. B."), "Triumph TR3 Road-Test", with the data panel "The Triumph TR3 Hard-Top" (p. 14), Motor Sport, Jul 1957, pp. 13–14⁠source 10; TSF: One good source.Bill Boddy ("W. B."), "Triumph TR3 Road-Test", with the data panel "The Triumph TR3 Hard-Top" (p. 14), Motor Sport, Jul 1957, pp. 13–14⁠source 10

Running gear, by version
Item	Drum Brakes	Disc Brakes	TR3A	TSF	TCF
Steering	cam and lever, 12 to 1 Steering, Drum Brakes Several figures in print. cam and lever, 12 to 1Good sources agree: Standard-Triumph, Triumph TR2 Workshop Manual, with the TR3 supplement, the lever "carries a conical shaped peg"; about 2¼ turns lock to lock⁠source 16 cam and leverGood sources agree: Bruno Dwinger, "TR 2 bis TR 3 B: Geschichte, Typen und Kaufberatung", TR-Register Deutschland, Nov 2008, 10 pp. (PDF), the sidescreen TRs⁠source 8 worm and peg ("Bishop cam" in the data table)Not yet confirmed: Wikipedia (EN), "Triumph TR3", 2026⁠source 17	cam and lever Steering, Disc Brakes Several figures in print. cam and leverGood sources agree: Karl Ludvigsen, "Disc Braked TR-3", with the Standard-Triumph advertisement in the same issue, Sports Cars Illustrated, Apr 1957, pp. 16–19, 58⁠source 5 cam and lever; 34 ft turning circle, 2.3 turns lock to lockGood sources agree: Wayne Thoms, "Triumph TR-3" (An MT Research Report), Motor Trend, Sep 1957, p. 36ff⁠source 7	cam and lever Steering, TR3A Several figures in print. cam and leverGood sources agree: Len Griffing, "SCI Road Test — Triumph TR3", with the Standard-Triumph Motor Co. Inc. advertisement in the same issue, Sports Cars Illustrated, Mar 1958, pp. 30–31, 58⁠source 15 cam and lever, 12 to 1Good sources agree: Standard-Triumph, Triumph TR2 Workshop Manual, with the TR3 supplement, the sidescreen TRs⁠source 16	cam and lever, 12 to 1	cam and lever, 12 to 1
Gearbox	Manual	Manual	Manual	Manual	Manual
Gears	4	4	4	4	4
Layout	RWD	RWD	RWD	RWD	RWD
Front brakes	Lockheed drums Front brakes, Drum Brakes Several figures in print. Lockheed drumsGood sources agree: Carl Musson (production dates and numbers) and Ken Streeter (spotter's guide), "TR3 (1955-1962)": the history, "Production Dates and Numbers" and "The TR2-TR3 Series Spotter's Guide", Vintage Triumph Register, to TS13045; at TS13046 "Changed from Lockhead to Girling Braking System"⁠source 1 Lockheed hydraulic drums, 10 x 2¼ inGood sources agree: Standard-Triumph, Triumph TR2 Workshop Manual, with the TR3 supplement, the TR2's specification, which the drum-braked TR3 kept to TS13045⁠source 16	Girling disc, 11 in Front brakes, Disc Brakes Several figures in print. Girling disc, 11 inGood sources agree: The Autocar, "The Autocar Road Test No. 1622 — Triumph TR3 Hardtop", 11 Jan 1957, pp. 41–43⁠source 4; Karl Ludvigsen, "Disc Braked TR-3", with the Standard-Triumph advertisement in the same issue, Sports Cars Illustrated, Apr 1957, pp. 16–19, 58⁠source 5 Girling front disc brakesGood sources agree: Carl Musson (production dates and numbers) and Ken Streeter (spotter's guide), "TR3 (1955-1962)": the history, "Production Dates and Numbers" and "The TR2-TR3 Series Spotter's Guide", Vintage Triumph Register, "Changed from Lockhead to Girling Braking System ... Front Disc Brakes", from TS13046⁠source 1	Girling 11 in disc front Front brakes, TR3A Several figures in print. Girling 11 in disc frontGood sources agree: Len Griffing, "SCI Road Test — Triumph TR3", with the Standard-Triumph Motor Co. Inc. advertisement in the same issue, Sports Cars Illustrated, Mar 1958, pp. 30–31, 58⁠source 15 front discs standardGood sources agree: TR Register, Buyer's guide pages (group): "Buyer's Guide" (general), "Triumph TR3 Buyers Guide", "Triumph TR3A Buyers Guide"⁠source 2	front disc brakes	front disc brakes
Rear brakes	Lockheed drums Rear brakes, Drum Brakes Several figures in print. Lockheed drumsGood sources agree: Carl Musson (production dates and numbers) and Ken Streeter (spotter's guide), "TR3 (1955-1962)": the history, "Production Dates and Numbers" and "The TR2-TR3 Series Spotter's Guide", Vintage Triumph Register, to TS13045⁠source 1 Lockheed hydraulic drums, 10 x 2¼ inGood sources agree: Standard-Triumph, Triumph TR2 Workshop Manual, with the TR3 supplement, the TR2 from TS5481, kept by the drum-braked TR3⁠source 16	10 x 2¼ in drums Rear brakes, Disc Brakes Several figures in print. 10 x 2¼ in drumsGood sources agree: The Autocar, "The Autocar Road Test No. 1622 — Triumph TR3 Hardtop", 11 Jan 1957, pp. 41–43, make not stated⁠source 4 normal 10 in brakesGood sources agree: Motor Sport, "The cars at Earls Court", Nov 1956, p. 14⁠source 20	10 in drums to TS56376; 9 in from TS56377 Rear brakes, TR3A Several figures in print. 10 in drums to TS56376; 9 in from TS56377One good source: Carl Musson (production dates and numbers) and Ken Streeter (spotter's guide), "TR3 (1955-1962)": the history, "Production Dates and Numbers" and "The TR2-TR3 Series Spotter's Guide", Vintage Triumph Register⁠source 1 Girling or Lockheed drum rearNot yet confirmed: Len Griffing, "SCI Road Test — Triumph TR3", with the Standard-Triumph Motor Co. Inc. advertisement in the same issue, Sports Cars Illustrated, Mar 1958, pp. 30–31, 58, 1958 test car⁠source 15	Not in the sources read	Not in the sources read
Front suspension	Independent by unequal length double wishbones, coil springs and telescopic dampers	Independent by unequal length double wishbones, coil springs and telescopic dampers	Independent by unequal length double wishbones, coil springs and telescopic dampers Front suspension, TR3A Several figures in print. Independent by unequal length double wishbones, coil springs and telescopic dampersOne good source: TR Register, Buyer's guide pages (group): "Buyer's Guide" (general), "Triumph TR3 Buyers Guide", "Triumph TR3A Buyers Guide", no anti-roll bar named⁠source 2 front anti-roll bar offered as a dealer kitOne good source: Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, July 1959, Jul 1959 (vol. V no. 7), US, 1959: not standard⁠source 18; Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, December 1959, Dec 1959, US, 1959: not standard⁠source 26	Independent by unequal length double wishbones, coil springs and telescopic dampers	Independent by unequal length double wishbones, coil springs and telescopic dampers
Rear suspension	Live axle, half elliptic springs and lever arm dampers	Live axle, half elliptic springs and lever arm dampers	Live axle, half elliptic springs and lever arm dampers	Live axle, half elliptic springs and lever arm dampers	Live axle, half elliptic springs and lever arm dampers
Tyres	Not in the sources read	5.50 x 15	5.50 x 15 Tyres, TR3A Several figures in print. 5.50 x 15One good source: TR Register, Buyer's guide pages (group): "Buyer's Guide" (general), "Triumph TR3 Buyers Guide", "Triumph TR3A Buyers Guide", pressed steel disc wheels⁠source 2 155 x 15 Michelin X ("equiv. to 5.50 x 15")One good source: Len Griffing, "SCI Road Test — Triumph TR3", with the Standard-Triumph Motor Co. Inc. advertisement in the same issue, Sports Cars Illustrated, Mar 1958, pp. 30–31, 58, 1958 US test car⁠source 15	5.50 x 15	Not in the sources read
Wheels	pressed-steel disc; centre-lock wire optional Wheels, Drum Brakes Several figures in print. pressed-steel disc; centre-lock wire optionalOne good source: TR Register, Buyer's guide pages (group): "Buyer's Guide" (general), "Triumph TR3 Buyers Guide", "Triumph TR3A Buyers Guide", the TR3A's; the TR3A is largely the TR3 (Dwinger)⁠source 2 centre-lock wire wheels among the extrasOne good source: Motor Sport, "Sports and high-performance cars at Earls Court", with the list "Sports Cars Costing Under £1,000 Inclusive of P.T.", Nov 1955, p. 16, October 1955; the standard wheels are pressed steel disc (TR Register, TR3A page)⁠source 9	pressed-steel disc; centre-lock wire optional Wheels, Disc Brakes Several figures in print. pressed-steel disc; centre-lock wire optionalOne good source: TR Register, Buyer's guide pages (group): "Buyer's Guide" (general), "Triumph TR3 Buyers Guide", "Triumph TR3A Buyers Guide", the TR3A's; the TR3A is largely the TR3 (Dwinger)⁠source 2 wire wheels and centre-lock hubs, £37 10s (extra)One good source: The Autocar, "The Autocar Road Test No. 1622 — Triumph TR3 Hardtop", 11 Jan 1957, pp. 41–43, the test car had them; the standard wheel is the steel disc⁠source 4	Pressed steel disc with 5.50 x 15 tyres; wire wheels optional	Pressed steel disc with 5.50 x 15 tyres; wire wheels optional	Pressed steel disc with 5.50 x 15 tyres; wire wheels optional
Final drive	Shaft	Shaft	Shaft	Shaft	Not in the sources read
Clutch	single dry plate, hydraulic	single dry plate, hydraulic	single dry plate, hydraulic	single dry plate, hydraulic	Not in the sources read
Starter	Electric	Electric	Electric	Electric	Not in the sources read

Contents

Body and chassis

Sources for Body and chassis, by version

Seats: Drum Brakes: One good source.Price list, October 1955. Motor Sport, "Sports and high-performance cars at Earls Court", with the list "Sports Cars Costing Under £1,000 Inclusive of P.T.", Nov 1955, p. 16⁠source 9; TR Register, Buyer's guide pages (group): "Buyer's Guide" (general), "Triumph TR3 Buyers Guide", "Triumph TR3A Buyers Guide"⁠source 2; "P.S.", "The Triumph TR-3", Motor Trend, Oct 1956, pp. 29, 52⁠source 6; Disc Brakes: One good source.The Autocar, "The Autocar Road Test No. 1622 — Triumph TR3 Hardtop", 11 Jan 1957, pp. 41–43⁠source 4; Karl Ludvigsen, "Disc Braked TR-3", with the Standard-Triumph advertisement in the same issue, Sports Cars Illustrated, Apr 1957, pp. 16–19, 58⁠source 5; TR3A: One good source.TR Register, Buyer's guide pages (group): "Buyer's Guide" (general), "Triumph TR3 Buyers Guide", "Triumph TR3A Buyers Guide"⁠source 2; Len Griffing, "SCI Road Test — Triumph TR3", with the Standard-Triumph Motor Co. Inc. advertisement in the same issue, Sports Cars Illustrated, Mar 1958, pp. 30–31, 58⁠source 15; TSF: One good source.TR Register, Buyer's guide pages (group): "Buyer's Guide" (general), "Triumph TR3 Buyers Guide", "Triumph TR3A Buyers Guide"⁠source 2; TCF: One good source.TR Register, Buyer's guide pages (group): "Buyer's Guide" (general), "Triumph TR3 Buyers Guide", "Triumph TR3A Buyers Guide"⁠source 2
Chassis material: Drum Brakes: One good source.Wayne Thoms, "Triumph TR-3" (An MT Research Report), Motor Trend, Sep 1957, p. 36ff⁠source 7; Disc Brakes: One good source.Wayne Thoms, "Triumph TR-3" (An MT Research Report), Motor Trend, Sep 1957, p. 36ff⁠source 7; TR3A: One good source.Wayne Thoms, "Triumph TR-3" (An MT Research Report), Motor Trend, Sep 1957, p. 36ff⁠source 7; TSF: One good source.Wayne Thoms, "Triumph TR-3" (An MT Research Report), Motor Trend, Sep 1957, p. 36ff⁠source 7; TCF: One good source.Wayne Thoms, "Triumph TR-3" (An MT Research Report), Motor Trend, Sep 1957, p. 36ff⁠source 7
Chassis: Drum Brakes: One good source.Bruno Dwinger, "TR 2 bis TR 3 B: Geschichte, Typen und Kaufberatung", TR-Register Deutschland, Nov 2008, 10 pp. (PDF)⁠source 8; Disc Brakes: One good source.Bruno Dwinger, "TR 2 bis TR 3 B: Geschichte, Typen und Kaufberatung", TR-Register Deutschland, Nov 2008, 10 pp. (PDF)⁠source 8; TR3A: One good source.Bruno Dwinger, "TR 2 bis TR 3 B: Geschichte, Typen und Kaufberatung", TR-Register Deutschland, Nov 2008, 10 pp. (PDF)⁠source 8; TSF: One good source.Bruno Dwinger, "TR 2 bis TR 3 B: Geschichte, Typen und Kaufberatung", TR-Register Deutschland, Nov 2008, 10 pp. (PDF)⁠source 8; TCF: One good source.Bruno Dwinger, "TR 2 bis TR 3 B: Geschichte, Typen und Kaufberatung", TR-Register Deutschland, Nov 2008, 10 pp. (PDF)⁠source 8

Body and chassis, by version
Item	Drum Brakes	Disc Brakes	TR3A	TSF	TCF
Seats	2	2	2	2	2
Chassis material	channel steel pressings with 'X' cross member	channel steel pressings with 'X' cross member	channel steel pressings with 'X' cross member	channel steel pressings with 'X' cross member	channel steel pressings with 'X' cross member
Chassis	box frame, cross-braced	box frame, cross-braced	box frame, cross-braced	box frame, cross-braced	box frame, cross-braced

Contents

Dimensions and weight

Sources for Dimensions and weight, by version

Length: Disc Brakes: Good sources disagree.The Autocar, "The Autocar Road Test No. 1622 — Triumph TR3 Hardtop", 11 Jan 1957, pp. 41–43⁠source 4; Wayne Thoms, "Triumph TR-3" (An MT Research Report), Motor Trend, Sep 1957, p. 36ff⁠source 7; Bill Boddy ("W. B."), "Triumph TR3 Road-Test", with the data panel "The Triumph TR3 Hard-Top" (p. 14), Motor Sport, Jul 1957, pp. 13–14⁠source 10; Karl Ludvigsen, "Disc Braked TR-3", with the Standard-Triumph advertisement in the same issue, Sports Cars Illustrated, Apr 1957, pp. 16–19, 58⁠source 5; TR3A: One good source.Len Griffing, "SCI Road Test — Triumph TR3", with the Standard-Triumph Motor Co. Inc. advertisement in the same issue, Sports Cars Illustrated, Mar 1958, pp. 30–31, 58⁠source 15
Width: Disc Brakes: Good sources agree.4 ft 7½ in. The Autocar, "The Autocar Road Test No. 1622 — Triumph TR3 Hardtop", 11 Jan 1957, pp. 41–43⁠source 4; Wayne Thoms, "Triumph TR-3" (An MT Research Report), Motor Trend, Sep 1957, p. 36ff⁠source 7; TR3A: Not yet confirmed.Printed 55¾ (OCR). Len Griffing, "SCI Road Test — Triumph TR3", with the Standard-Triumph Motor Co. Inc. advertisement in the same issue, Sports Cars Illustrated, Mar 1958, pp. 30–31, 58⁠source 15
Height: Disc Brakes: Good sources agree.4 ft 2 in. The Autocar, "The Autocar Road Test No. 1622 — Triumph TR3 Hardtop", 11 Jan 1957, pp. 41–43⁠source 4; Wayne Thoms, "Triumph TR-3" (An MT Research Report), Motor Trend, Sep 1957, p. 36ff⁠source 7; TR3A: One good source.Len Griffing, "SCI Road Test — Triumph TR3", with the Standard-Triumph Motor Co. Inc. advertisement in the same issue, Sports Cars Illustrated, Mar 1958, pp. 30–31, 58⁠source 15
Kerb weight: Disc Brakes: Several figures in print.The Autocar, "The Autocar Road Test No. 1622 — Triumph TR3 Hardtop", 11 Jan 1957, pp. 41–43⁠source 4; Bill Boddy ("W. B."), "Triumph TR3 Road-Test", with the data panel "The Triumph TR3 Hard-Top" (p. 14), Motor Sport, Jul 1957, pp. 13–14⁠source 10; Karl Ludvigsen, "Disc Braked TR-3", with the Standard-Triumph advertisement in the same issue, Sports Cars Illustrated, Apr 1957, pp. 16–19, 58⁠source 5; Wayne Thoms, "Triumph TR-3" (An MT Research Report), Motor Trend, Sep 1957, p. 36ff⁠source 7; TR3A: Several figures in print.Len Griffing, "SCI Road Test — Triumph TR3", with the Standard-Triumph Motor Co. Inc. advertisement in the same issue, Sports Cars Illustrated, Mar 1958, pp. 30–31, 58⁠source 15; Motor Trend, Imported-car guide, May 1960⁠source 19; Wikipedia (EN), "Triumph TR3", 2026⁠source 17
Wheelbase: Disc Brakes: Good sources agree.7 ft 4 in. The Autocar, "The Autocar Road Test No. 1622 — Triumph TR3 Hardtop", 11 Jan 1957, pp. 41–43⁠source 4; Wayne Thoms, "Triumph TR-3" (An MT Research Report), Motor Trend, Sep 1957, p. 36ff⁠source 7; TR3A: One good source.Len Griffing, "SCI Road Test — Triumph TR3", with the Standard-Triumph Motor Co. Inc. advertisement in the same issue, Sports Cars Illustrated, Mar 1958, pp. 30–31, 58⁠source 15
Ground clearance: Disc Brakes: Good sources agree.The Autocar, "The Autocar Road Test No. 1622 — Triumph TR3 Hardtop", 11 Jan 1957, pp. 41–43⁠source 4; Wayne Thoms, "Triumph TR-3" (An MT Research Report), Motor Trend, Sep 1957, p. 36ff⁠source 7
Fuel tank: Drum Brakes: One good source."reduced to 12 gallons" from the TR2's 12½ to make room for the occasional seat. Standard-Triumph, Triumph TR2 Workshop Manual, with the TR3 supplement⁠source 16; Disc Brakes: Several figures in print.The Autocar, "The Autocar Road Test No. 1622 — Triumph TR3 Hardtop", 11 Jan 1957, pp. 41–43⁠source 4; Standard-Triumph, Triumph TR2 Workshop Manual, with the TR3 supplement⁠source 16; Karl Ludvigsen, "Disc Braked TR-3", with the Standard-Triumph advertisement in the same issue, Sports Cars Illustrated, Apr 1957, pp. 16–19, 58⁠source 5; Bill Boddy ("W. B."), "Triumph TR3 Road-Test", with the data panel "The Triumph TR3 Hard-Top" (p. 14), Motor Sport, Jul 1957, pp. 13–14⁠source 10; TR3A: One good source.The TR3 and later, reduced from the TR2's 12½ for the occasional seat. Standard-Triumph, Triumph TR2 Workshop Manual, with the TR3 supplement⁠source 16; Len Griffing, "SCI Road Test — Triumph TR3", with the Standard-Triumph Motor Co. Inc. advertisement in the same issue, Sports Cars Illustrated, Mar 1958, pp. 30–31, 58⁠source 15

Dimensions and weight, by version
Item	Drum Brakes	Disc Brakes	TR3A	TSF	TCF
Length	Not in the sources read	151 in Length, Disc Brakes Good sources disagree. 151 inDisputed: The Autocar, "The Autocar Road Test No. 1622 — Triumph TR3 Hardtop", 11 Jan 1957, pp. 41–43, 12 ft 7 in; the test car had front overriders⁠source 4; Wayne Thoms, "Triumph TR-3" (An MT Research Report), Motor Trend, Sep 1957, p. 36ff⁠source 7 149 inDisputed: Bill Boddy ("W. B."), "Triumph TR3 Road-Test", with the data panel "The Triumph TR3 Hard-Top" (p. 14), Motor Sport, Jul 1957, pp. 13–14, 12 ft 5 in, hard-top⁠source 10; Karl Ludvigsen, "Disc Braked TR-3", with the Standard-Triumph advertisement in the same issue, Sports Cars Illustrated, Apr 1957, pp. 16–19, 58⁠source 5	151 in	Not in the sources read	Not in the sources read
Width	Not in the sources read	55.5 in	55.75 in	Not in the sources read	Not in the sources read
Height	Not in the sources read	50 in	50 in	Not in the sources read	Not in the sources read
Kerb weight	Not in the sources read	22 cwt Kerb weight, Disc Brakes Several figures in print. 22 cwtOne good source: The Autocar, "The Autocar Road Test No. 1622 — Triumph TR3 Hardtop", 11 Jan 1957, pp. 41–43, 2,464 lb, with 5 gallons of fuel; hardtop, overdrive and wire wheels (SKV 656)⁠source 4 19.5 cwtOne good source: Bill Boddy ("W. B."), "Triumph TR3 Road-Test", with the data panel "The Triumph TR3 Hard-Top" (p. 14), Motor Sport, Jul 1957, pp. 13–14, printed "19 cwt. 2 qr. 0lb."; ready for the road with about one gallon, no occupants; hard-top, wire wheels⁠source 10 2200 lbOne good source: Karl Ludvigsen, "Disc Braked TR-3", with the Standard-Triumph advertisement in the same issue, Sports Cars Illustrated, Apr 1957, pp. 16–19, 58, test car, with overdrive and wire wheels⁠source 5; Wayne Thoms, "Triumph TR-3" (An MT Research Report), Motor Trend, Sep 1957, p. 36ff, printed "weight 2200 lbs. (53% front, 47% rear)"; equipment and fuel not stated⁠source 7	2135 lb Kerb weight, TR3A Several figures in print. 2135 lbOne good source: Len Griffing, "SCI Road Test — Triumph TR3", with the Standard-Triumph Motor Co. Inc. advertisement in the same issue, Sports Cars Illustrated, Mar 1958, pp. 30–31, 58, 1958 test car (roadster, 4.11 axle, no overdrive)⁠source 15 2128 lbOne good source: Motor Trend, Imported-car guide, May 1960⁠source 19 2090 lbNot yet confirmed: Wikipedia (EN), "Triumph TR3", 2026, kerb, Road & Track 1977 retrospective, as reported by Wikipedia⁠source 17	Not in the sources read	Not in the sources read
Wheelbase	Not in the sources read	88 in	88 in	Not in the sources read	Not in the sources read
Ground clearance	Not in the sources read	6 in	Not in the sources read	Not in the sources read	Not in the sources read
Fuel tank	12 gal	12 gal Fuel tank, Disc Brakes Several figures in print. 12 galGood sources agree: The Autocar, "The Autocar Road Test No. 1622 — Triumph TR3 Hardtop", 11 Jan 1957, pp. 41–43, "12 Imperial gallons"⁠source 4; Standard-Triumph, Triumph TR2 Workshop Manual, with the TR3 supplement, the TR3, reduced from the TR2's 12½ for the occasional seat⁠source 16; Karl Ludvigsen, "Disc Braked TR-3", with the Standard-Triumph advertisement in the same issue, Sports Cars Illustrated, Apr 1957, pp. 16–19, 58, 14.4 US gal is 12 Imp gal⁠source 5 12.5 galNot yet confirmed: Bill Boddy ("W. B."), "Triumph TR3 Road-Test", with the data panel "The Triumph TR3 Hard-Top" (p. 14), Motor Sport, Jul 1957, pp. 13–14, "12½ gallons", as printed (the TR2's figure)⁠source 10	12 gal	Not in the sources read	Not in the sources read

Contents

Sources

Every source the site cites is on the sources page.

Primarymade at the time, by the maker or by people who were there
Referenceserious later work: clubs, specialists, magazines, books
Uncheckedencyclopaedias and enthusiast sites: cited beside a good source, named in the sentence, or marked Unchecked

Carl Musson (production dates and numbers) and Ken Streeter (spotter's guide), "TR3 (1955-1962)": the history, "Production Dates and Numbers" and "The TR2-TR3 Series Spotter's Guide", Vintage Triumph Register, "Production Dates and Numbers": TS13046, TSF1, TCF1; "Production Dates and Numbers": TS18230E; "Production Dates and Numbers": TS13046, TS56377; "Production Dates and Numbers" (Musson); "Production Dates and Numbers" (Musson), TS8637; "Production Dates and Numbers" (Musson), TS13046; "Production Dates and Numbers" (Musson), TS56377. vintagetriumphregister.org/tr3 Reference
TR Register, Buyer's guide pages (group): "Buyer's Guide" (general), "Triumph TR3 Buyers Guide", "Triumph TR3A Buyers Guide", TR3 and TR3A guides, "Engine Details"; TR3 and TR3A guides, "Engine Details": the rating and its engine speed; TR3A guide, suspension and wheels; TR3 and TR3A guides, the performance tables; "Triumph TR3A Buyers Guide" page, "Basic Price"; "Triumph TR3 Buyers Guide" page, text; "Triumph TR3A Buyers Guide" page, "Manufactured"; "Triumph TR3 Buyers Guide" page, "Engine Details"; "Triumph TR3A Buyers Guide" page, "Engine Details"; "Triumph TR3A Buyers Guide" page, text and "Optional Extras"; "Triumph TR3A Buyers Guide" page, "TR3A Performance Data"; "Triumph TR3A Buyers Guide" page, text; "Triumph TR3 Buyers Guide" page, "Suspension Details"; "Triumph TR3A Buyers Guide" page, "Suspension Details"; "Triumph TR3A Buyers Guide" page, "Wheels"; "Triumph TR3A Buyers Guide" page, "Wheels" and "Optional Extras"; "Triumph TR3 Buyers Guide" page, "Optional Extras"; "Triumph TR3A Buyers Guide" page, "Optional Extras". tr-register.co.uk/resources/buyers-guide Reference
TR Drivers Club, "Triumph TR3B" (updated March 2015), the TSF and TCF specification; the TR4 gearbox in the TR3B; text. trdrivers.com/articles21/triumphtr3b.html Reference
The Autocar, "The Autocar Road Test No. 1622 — Triumph TR3 Hardtop", 11 Jan 1957, pp. 41–43, pp. 41–43 and the data panel; data panel, gear ratios and mph per 1,000 rpm; data panel: suspension, steering, brakes, tyres, pressures; data panel: dimensions, weights, frontal area; data panel, performance and fuel; Road Test No. 1622, p. 41, price; Road Test No. 1622, pp. 41-43, data panel; Road Test No. 1622, engine-bay caption; Road Test No. 1622, p. 41, extras; Road Test No. 1622, pp. 41-43, extras and text. trvc.nl/wp-content/uploads/2016/11/road-test-TR-3-1957.pdf Primary
Karl Ludvigsen, "Disc Braked TR-3", with the Standard-Triumph advertisement in the same issue, Sports Cars Illustrated, Apr 1957, pp. 16–19, 58, the data panel; data panel; data panel: steering and brakes; data panel, performance; the advertisement; Apr 1957, Standard-Triumph advert; Apr 1957, pp. 16-19, data panel (page image n18); Apr 1957, pp. 16-19, text; Apr 1957, pp. 16-19, data panel (page image n18), "Weight (test car)". Primary
"P.S.", "The Triumph TR-3", Motor Trend, Oct 1956, pp. 29, 52, specifications; performance; Oct 1956, pp. 29, 52. Primary
Wayne Thoms, "Triumph TR-3" (An MT Research Report), Motor Trend, Sep 1957, p. 36ff, specifications; specifications: ratios, axle and clutch; chassis; performance; Sept 1957, p. 36ff, specifications, prices; Sept 1957, p. 36ff, specifications; Sept 1957, p. 36ff, specifications, performance; Sept 1957, p. 36ff, specifications, dimensions. Primary
Bruno Dwinger, "TR 2 bis TR 3 B: Geschichte, Typen und Kaufberatung", TR-Register Deutschland, Nov 2008, 10 pp. (PDF), pp. 3–4, the engines; p. 4, ratios and overdrive; p. 4, "Nocken und Hebel"; p. 3, production table; p. 1, history; p. 4; pp. 3-4, "Technische Daten des TR2" and "TR 3: Daten generell wie beim TR2"; p. 4, TR3B; p. 3. tr-register.de/wp-content/uploads/2025/10/Kaufberatung_Geschichte_TR2_TR3.pdf Reference
Motor Sport, "Sports and high-performance cars at Earls Court", with the list "Sports Cars Costing Under £1,000 Inclusive of P.T.", Nov 1955, p. 16, p. 16, Triumph stand 123; Nov 1955, p. 16, Triumph stand; Nov 1955, p. 16ff, show price list ("Triumph TR3 two-seater"). motorsportmagazine.com/archive/article/november-1955/16/sports-and-high-performance-cars-at-earls-court Primary
Bill Boddy ("W. B."), "Triumph TR3 Road-Test", with the data panel "The Triumph TR3 Hard-Top" (p. 14), Motor Sport, Jul 1957, pp. 13–14, p. 14, the data panel; pp. 13–14; Jul 1957, p. 14, data panel "The Triumph TR3 Hard-Top"; Jul 1957, p. 13, text. motorsportmagazine.com/archive/article/july-1957/13/triumph-tr3-road-test Primary
Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, December 1955, Dec 1955 (vol. I no. 9), the US announcement; Dec 1955 (vol. I no. 9), read by the TR2 site. vintagetriumphregister.org/tsoa/TSOADec1955.pdf Primary
Dennis May, "Technical Report" on the TR-4 (cover story), Car and Driver, Oct 1961, pp. 19–23, pp. 19–23, gross and net; the TR-3's track; Oct 1961, pp. 19-23, Dennis May's Technical Report. Primary
Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, December 1958, Dec 1958, the gearbox ratio table. vintagetriumphregister.org/tsoa/TSOADecember58.pdf Primary
Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, May 1959, May 1959 (vol. V no. 5), axle identification. vintagetriumphregister.org/tsoa/TSOAMay59.pdf Primary
Len Griffing, "SCI Road Test — Triumph TR3", with the Standard-Triumph Motor Co. Inc. advertisement in the same issue, Sports Cars Illustrated, Mar 1958, pp. 30–31, 58, pp. 30–31, 58; data panel; data panel; the advertisement; Mar 1958 issue, Standard-Triumph advertisement; Mar 1958, pp. 30-31, data panel (page image n30). Primary
Standard-Triumph, Triumph TR2 Workshop Manual, with the TR3 supplement, steering: "cam and lever type with a ratio of 12 to 1"; general data: the fuel tank; steering section (archive.org manualzilla-id-6026862; page image checked by the TR2 site); TR2 manual with the TR3 supplement, general data (archive.org manualzilla-id-6026862; read by the TR2 site). Primary
Wikipedia (EN), "Triumph TR3", 2026, "worm and peg"; "Bishop cam"; *The Motor*, 4 April 1956; *Road & Track*, June 1977; TR3B paragraph; performance; text and specification table. en.wikipedia.org/wiki/Triumph_TR3 Unchecked
Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, July 1959, Jul 1959 (vol. V no. 7), the front anti-roll bar kit; Jul 1959. vintagetriumphregister.org/tsoa/TSOAJuly59.pdf Primary
Motor Trend, Imported-car guide, May 1960, the Triumph TR3 entry; May 1960 imported-car guide, Triumph TR3 entry (read by the Austin-Healey 3000 site, its S23). Primary
Motor Sport, "The cars at Earls Court", Nov 1956, p. 14, Nov 1956, p. 14, Triumph stand. motorsportmagazine.com/archive/article/november-1956/14/cars-earls-court Primary
Graham Robson (essay "15 Years of Evolution"), Triumph TR2 – TR3/3A, TR4/4A – TR5, TR250 1953–1968 Parts & Accessories Catalogue, Rimmer Bros, edn 2.1 (source code TR2512), Part 1, p. 7, "Vehicle Identification - All Models"; p. 5, Robson's essay "15 Years of Evolution"; p. 6, "TR Production Figures: 1953 to 1968"; p. 4, catalogue contents. rimmerbros.com/images/PDFs/TR2-5_Part1.pdf Reference
Bill Boddy, "Sports Cars of the 'Big Five'", Motor Sport, May 1957, p. 15, May 1957, p. 15. motorsportmagazine.com/archive/article/may-1957/15/sports-cars-of-the-big-five Primary
Karl Ludvigsen, "Triumph gets a going over", Sports Cars Illustrated, Mar 1956, pp. 36–38, 56, Mar 1956, p. 36. Primary
Bill Boddy ("W. B."), "The new Triumph TR4", Motor Sport, Sep 1961, p. 17, Sept 1961, p. 17. motorsportmagazine.com/archive/article/september-1961/17/the-new-triumph-tr4 Primary
Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, September 1961 (TR-4 special issue), Sep 1961 (vol. VII no. 9), Sep 1961 (vol. VII no. 9), TR-4 specification. vintagetriumphregister.org/tsoa/TSOASep61.pdf Primary
Triumph Sports Owners Association, Triumph Sports Owners Association Newsletter, December 1959, Dec 1959, Dec 1959. vintagetriumphregister.org/tsoa/TSOADecember1959.pdf Primary

Contents