Austin Healey Specifications Overview

BN1 to Early BN4

Austin Healey 100 BN1

Production Period	May 1953-June 1955
Body Style	Open two-seater roadster
Engine	4-cylinder pushrod OHV, engine: 2,660 cc
Carburettors	Two SU 1.5" semi-downdraft
Horsepower	90 bhp @ 4,000 rpm
Torque	144 lb/ft @ 2,000 rpm
Transmission	Three forward speeds plus overdrive available on 2nd and 3rd
Brakes	Drum brakes front and rear
Weight	2,150 lb
Top Speed	103 mph
Zero - 60	11.7 sec
Other	-
Competition Successes	1953–54 BN1 Competition Results Year Event Result 1953 Mille Miglia (Brescia) 12th overall, 2nd in >2 L Sports class 1953 Bonneville Salt Flats – 24 Hours Averaged 104.3 mph (stock BN1) 1953 Bonneville Salt Flats – Flying Mile 143.626 mph (modified BN1) 1954 12 Hours of Sebring 3rd overall, 1st in 3 L Sports class 🥉

Austin Healey 100 BN2

Production Period	August 1955-August 1956
Body Style	Two-seat roadster
Engine	4-cylinder push-rod OHV, engine: 2,660 cc
Carburettors	Two SU H4 1.5" semi-downdraft
Horsepower	90 bhp @ 4,000 rpm
Torque	144 lb/ft @ 2,500 rpm
Transmission	Four forward speeds plus optional overdrive available on 3rd and 4th
Brakes	Drum brakes front and rear
Weight	2,170 lb
Top Speed	103 mph
Zero - 60	11 sec
Other	Improved brakes and suspension compared to Austin Healey 100 BN1

Austin Healey 100S (Sebring)

Production Period	February-November 1955
Body Style	Two-seat roadster - Lightened and restyled
Engine	4-cylinder push-rod OHV engine: 2,660 cc
Carburettors	Two SU H4 1.75" semi-downdraft
Horsepower	132 bhp @ 4,700 rpm
Torque	168 lb/ft @ 2,500 rpm
Transmission	Four forward speeds
Brakes	11.5" diameter Dunlop Discs front and rear
Weight	1,962 lb
Top Speed	118 mph
Zero - 60	7.8 sec
Other	55 (50 Production Cars + 5 Works Prototypes)
Competition Successes	1954–56 100S Competition Results Year Event Result 1954 12 Hours of Sebring 3rd overall, 1st in S3.0 class (Macklin/Huntoon) 1954 Bonneville Salt Flats Averaged 132.29 mph over 24 hours; set multiple International Class D records 1955 12 Hours of Sebring 6th overall (Moss/Macklin) 1955 Mille Miglia 1st in S-3.0 Sports class (NOJ 393) 🥇 1956 12 Hours of Sebring 11th overall (Bussey) 1956 Bonneville Salt Flats Averaged 153.14 mph over 500 miles; set multiple International Class D records

Austin Healey 100M BN1/BN2

Production Period	1955-1956
Body Style	Two-seat roadster
Engine	4-cylinder push-rod OHV engine: 2,660 cc
Carburettors	Two 1.75" semi-downdraft
Horsepower	110 bhp @ 4,500 rpm
Torque	143 lb/ft @ 2,000 rpm
Transmission	Four forward speeds plus optional overdrive available on 3rd and 4th
Brakes	Drum brakes front and rear
Weight	2,170 lb
Top Speed	109 mph
Zero - 60	9.6 sec
Other	Le Mans conversion, available either as a Donald Healey modified BN2 or as an engine conversion kit which could be purchased and fitted by owners.

100-Six - BN4 & BN6

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Austin Healey 100-Six BN4 (First Series)

Production Period	August 1956-late 1957
Body Style	Restyled 2+2-seater roadster
Engine	6-cylinder push-rod OHV engine: 2,639 cc
Carburettors	Two SU H4 1.5" sidedraft
Horsepower	102 bhp (early small-port) @ 4,600 rpm
Torque	142 lb/ft @ 2,400 rpm
Transmission	Four forward gears with overdrive available on 3rd and 4th
Brakes	Drum brakes front and rear
Weight	2,422 lb
Top Speed	105 mph
Zero - 60	12.2 sec
Other	Later models within this series were fitted with a 12-port cylinder head and twin 1¾-inch SU Carburettors, increasing output to approximately 117 bhp at 5,000 rpm
Competition Successes	1957 BN4 First Series Competition Results Year Event Result 1957 Mille Miglia 1st in class 🥇 37th overall (drivers: Tommy Wisdom & Cecil Winby) 1957 12 Hours of Sebring 2nd in class 🥈 (modified BN4 with Weber Carburettors) 1957 SCCA National Races Class wins by Dick Thompson in BN4

Austin Healey 100-Six BN4 (Second Series)

Production Period	Late 1957-June 1959
Body Style	Restyled 2+2-seater roadster
Engine	6-cylinder push-rod OHV engine: 2,639 cc
Carburettors	Two SU HD6 1.75" semi-downdraft
Horsepower	117 bhp (12-port head, larger SUs) @ 4,750 rpm
Torque	149 lb/ft @ 3,000 rpm
Transmission	Four forward gears with overdrive available on 3rd and 4th
Brakes	Drum brakes front and rear
Weight	2,422 lb
Top Speed	109 mph
Zero - 60	10.4 sec
Other	These models were equipped with a 12-port cylinder head and twin 1¾-inch SU Carburettors, producing approximately 117 bhp at 5,000 rpm.
Competition Successes	1958 BN4 Second Series Competition Results Year Event Result 1958 SCCA National Races Class wins by Dick Thompson in BN4 🏆 1958 Liège-Rome-Liège Rally Class podiums for BN4 entries 1958 Coupe des Alpes Class podiums for BN4 entries

Austin Healey 100-Six BN6

Production Period	Late 1957-June 1959 (2-seat)
Body Style	Restyled 2/4-seater roadster - Later available only as 2-seater
Engine	6-cylinder 2,639 cc
Carburettors	Two SU HD6 1.75" semi-downdraft
Horsepower	117 bhp @ 4,750 rpm
Torque	142 lb/ft @ 3,000 rpm
Transmission	Four forward gears with overdrive available on 3rd and 4th
Brakes	Drum brakes front and rear
Weight	2,422 lb
Top Speed	109 mph
Zero - 60	10.4 sec
Other	Open two-seater
Competition Successes	1958 BN6 Competition Results Year Event Result 1958 SCCA National Races Class wins by Dick Thompson in BN6 🏆 1958 Liège-Rome-Liège Rally Class podiums for BN6 entries 1958 Coupe des Alpes Class podiums for BN6 entries

3000 - BN7, BT7, BJ7 & BJ8

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Austin Healey 3000 MK I BN7

Production Period	July 1959-April 1961
Body Style	Two-seat roadster
Engine	6-cylinder 2,912 cc inline (C-Series)
Carburettors	Two SU HD6 1.75" semi-downdraft
Horsepower	124 bhp @ 4,600 rpm
Torque	162 lb/ft @ 2,700 rpm
Transmission	Four forward gears with overdrive available on 3rd and 4th
Brakes	Disc brakes front, drum brakes rear
Weight	2,375 lb
Top Speed	112.5 mph
Zero - 60	9.8 sec
Other	Open two-seater with optional extras including overdrive, wire wheels, and hardtop
Competition Successes	1960 MK1 BN7 Competition Results Year Event Result 1960 Liège-Rome-Liège (98-hour marathon) 1st overall (Pat Moss / Ann Wisdom, car URX 747) 🥇 1960 Alpine Rally (Coupe des Alpes) 1st overall, outright Coupe des Alpes trophy 🥇

Austin Healey 3000 MK I BT7

Production Period	July 1959-April 1961
Body Style	2+2-seater roadster
Engine	6-cylinder push-rod OHV engine: 2,912 cc
Carburettors	Two SU HD6 1.75" semi-downdraft
Horsepower	124 bhp @ 4,600 rpm
Torque	162 lb/ft @ 2,700 rpm
Transmission	Four forward gears with overdrive available on 3rd and 4th
Brakes	Disc brakes front, drum brakes rear
Weight	2,375 lb
Top Speed	112.5 mph
Zero - 60	9.8 sec
Other	2+2 seating configuration with optional extras including overdrive, wire wheels, and hardtop
Competition Successes	1961 MK1 BT7 Competition Results Year Event Result 1961 Liège-Sofia-Liège* preparatory rallies Multiple class podiums (works BT7s) 🏁

Austin Healey 3000 MK II BN7

Production Period	May 1961-March 1962
Body Style	Two-seat roadster
Engine	6-cylinder push-rod OHV engine: 2,912 cc
Carburettors	Three SU HS4 1.5" semi-downdraft
Horsepower	132 bhp @ 4,750 rpm
Torque	167 lb/ft @ 3,000 rpm
Transmission	Four forward gears with overdrive available on 3rd and 4th
Brakes	Disc brakes front, drum brakes rear
Weight	2,450-2,550 lb (≈ 1,118 kg)
Top Speed	115 mph
Zero - 60	10.9 sec (period test range)
Other	Open two-seater; only 355 units produced, making it one of the rarest Big Healeys
Competition Successes	1962 MK2 BN7 Competition Results Year Event Result 1962 Spa-Sofia-Liège 2nd overall (Pat Moss / E. Carlsson) 🥈

Austin Healey 3000 Mark II BT7

Production Period	May 1961-June 1962
Body Style	2+2-seat roadster
Engine	6-cylinder push-rod OHV engine: 2,912 cc
Carburettors	Three SU HS4 1.5" semi-downdraft
Horsepower	132 bhp @ 4,750 rpm
Torque	167 lb/ft @ 3,000 rpm
Transmission	Four forward gears with overdrive available on 3rd and 4th
Brakes	Disc brakes front, drum brakes rear
Weight	2,450-2,550 lb (≈ 1,118 kg)
Top Speed	115 mph
Zero - 60	10.9 sec
Other	2+2 seating configuration; optional extras included overdrive, wire wheels, and hardtop
Competition Successes	1961 MK2 BT7 Competition Results Year Event Result 1961 Liège-Sofia-Liège* preparatory rallies Multiple class podiums (works BT7s) 🏁

Austin Healey 3000 Mark II BJ7

Production Period	March 1962-1964
Body Style	2+2-seat convertible
Engine	6-cylinder 2,912 cc
Carburettors	Two SU HS6 1.75" semi-downdraft
Horsepower	131 @ 4,750 rpm
Torque	158 lb/ft @ 3,000 rpm
Transmission	Four forward gears with overdrive available on 3rd and 4th
Brakes	Disc brakes front, drum brakes rear
Weight	2,380 lb
Top Speed	115 mph
Zero - 60	11.2 sec
Other	Wind-up windows, wrap around windscreen and convertible hood
Competition Successes	1963 MK2 BJ7 Competition Results Year Event Result 1963 RAC Rally (GB) GT winner, 3rd overall 🥉

Austin Healey 3000 Mark III BJ8

Production Period	From 1964-December 1967
Body Style	2+2-seat convertible
Engine	6-cylinder 2,912 cc
Carburettors	Twin SU HD8 2" semi-downdraft
Horsepower	150 @ 5,250 rpm
Torque	173 lb/ft @ 3,000 rpm
Transmission	Four forward gears with overdrive available on 3rd and 4th
Brakes	Disc brakes front, drum brakes rear
Weight	2,390 lb
Top Speed	121 mph
Zero - 60	9.8 sec
Other	Wind-up windows, wrap-around windscreen, convertible hood, restyled interior, revised exhaust system
Competition Successes	1964-1965 MK3 BJ8 Competition Results Year Event Result 1964 Spa-Sofia-Liège GT class win, 4th overall (works BJ8) 1965 RAC Rally Class win (over-3 L GT) 🏆

Note: Period performance figures (e.g. 0‐60 mph) are from contemporary road tests of standard cars. Real-world results varied with OD fitment, tyres, altitude and test conditions. MkII BN7 and BT7 share the same gearing; OD (optional) operates on 3rd & 4th.

Sprite MK1 to MK4

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Sprite Mk 1 AN5-501 – AN5-49584 | No MG

Production Period	May 1958-May 1961
Body Style	Two-seater roadster
Engine	BMC A series 948cc inline 4-cylinder
Carburettors	Twin SU H1 11⁄8" carbs
Horsepower	43-45 bhp @ 5,500 rpm
Torque	52 lb/ft @ 3,000-3,300 rpm
Transmission	4-speed manual with synchro available on 2nd, 3rd and 4th
Brakes	Drum brakes front & rear
Weight	1382 lb
Top Speed	83 mph
Zero - 60	20 sec
Other	One-piece bonnet and front wings hinged at the rear No external boot access; luggage compartment accessed from behind the seats Detachable side screens Simple, minimalist interior
Competition Successes	Sprite MK1 Competition Results Year Event Result 1958 Alpine Rally Class win (John Sprinzel & Willy Cave) 1959 Sebring 12 Hours 1st, 2nd, and 3rd in class 🏆 1959 Monte Carlo Rally 5th in class (Tommy Wisdom) 1959 Sestriere Rally 1st in class (Tommy Wisdom) 🥇 1959 Alpine Rally 2nd in class (Tommy Wisdom) 1960 Sebring 12 Hours Class win 1960 Sebring 4-Hour GT Race 2nd overall, class win (Stirling Moss) 1961 Sebring 4-Hour GT Race Multiple top-8 finishes 1961 Sebring 12 Hours 2nd, 3rd, and 4th in 1150cc class

Sprite Mk 2 HAN6-101 – HAN7-38828 | Midget Mk 1 GAN1-101 – GAN2-25787

Production Period	May 1961-March 1964
Body Style	Two-seater roadster
Engine	BMC A series 948cc 4-cylinder inline
Carburettors	Twin SU HS2 carbs
Horsepower	46-50 bhp @ 5,500 rpm
Torque	53 lb/ft @ 2,750 rpm
Transmission	4-speed manual; synchromesh on 2nd, 3rd, and 4th gears
Brakes	Drum brakes front & rear (front disc brakes introduced in 1962 with the 1098 cc engine)
Weight	1543 lb
Top Speed	85 mph
Zero - 60	19.8 sec
Other	Restyled body with conventional bonnet and exterior boot lid From 1962, HAN7 introduced the 1098cc + front discs
Competition Successes	Sprite MK2 Competition Results Year Event Result 1964 SCCA National Championship Runoffs (H Production) 1st place (Fred Salo) 🥇 1964 SCCA National Championship Runoffs (H Production) 2nd place (Gilbert Page)

Sprite Mk 3 HAN8-38829 – HAN8-64734 | Midget Mk 2 GAN3-25788 – GAN3-52389

Production Period	May 1964-September 1966
Body Style	Two-seater roadster
Engine	BMC A-series 1098cc 4-cylinder inline
Carburettors	Twin SU HS2 carbs
Horsepower	59 bhp @ 5,750 rpm
Torque	62 lb/ft @ 3,250 rpm
Transmission	4-speed manual with synchromesh on 2nd, 3rd, and 4th gears
Brakes	Disc brakes front, Drum brakes rear
Weight	1,574 lb
Top Speed	92 mph
Zero - 60	14.7 sec
Other	Wind-up side windows replacing the earlier sidescreens Larger, curved-glass windscreen with hinged quarter-lights Rear suspension updated from quarter-elliptic to semi-elliptic leaf springs for improved ride comfort
Competition Successes	Sprite MK2 Competition Results Year Event Result 1965 SCCA National Championship Runoffs (G Production) 2nd place (Rick Hilgers) 🥈 1965 SCCA National Championship Runoffs (G Production) 5th place (Fred Darling)

Sprite Mk 4 HAN9-64735 – HAN10-86802 | Midget Mk 3 GAN4-52390 – GAN5-74885

Production Period	October 1966-1969 (Sprite name dropped in UK)
Body Style	Two-seater roadster
Engine	BMC A-series 1,275cc inline 4-cylinder
Carburettors	Twin SU HS2 carbs
Horsepower	65 bhp @ 6,000 rpm
Torque	72 lb/ft @ 3,000 rpm
Transmission	4-speed manual with synchromesh on 2nd, 3rd, and 4th gears
Brakes	Disc brakes front, Drum brakes rear
Weight	1,574 lb
Top Speed	94 mph
Zero - 60	14.6 sec
Other	Folding hood Diaphragm clutch Separate clutch and brake master cylinders Larger engine compared to previous models Adopted the Midget-style wind-up windows
Competition Successes	Sprite MK2 Competition Results Year Event Result 1965 24 Hours of Le Mans 12th overall, 1st in class (Paul Hawkins & John Rhodes) 1965 24 Hours of Le Mans Class win 🏆

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Frequently Asked Questions

If you're unsure which model you have or which parts fit, start here. These answers cover the most common Austin Healey & Sprite/Midget identification questions.