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"Big" Healey Model Guide
Model Image Known As Production Dates Model Specifics
100-4
BN1
BN2
BN1: May 1953 - June 1955
BN2: August 1955 - August 1956
BN1: Open 2 seater, 4 cylinder engine, 2660cc, trin 1.5" SU carburetors; 3 speed with overdrive
BN2: Same as BN1, with a 4 speed, improved brakes and suspension
100S February 1955 - November 1955 Special racing version of the 100; only 50 produced. Modified engine with 1.75" SU carburetors, disc brakes and all-aluminum body
100M September 1955 - July 1956 Le Mans version, available from the factory as a modified BN2. Only 640 produced
100-6
BN4
BN6
August 1956 - June 1959 BN4: Open 2+2 seater, 6 cylinder engine, 2639cc, twin 1.75" SUs, 4-speed. Horizontal grille bars
BN6: 2 seater. Otherwise same as BN4
3000 MKI
BN7
BT7
July 1959 - April 1961 BN7: Open 2 seater, 6 cylinder engine, 2912cc, twin 1.75" SUs, front disc brakes. Horizontal grille bars
BT7: 2+2 seater. Otherwise same as BN7
3000 MKII
BN7
BT7
May 1961 - March 1962 BN7: Open 2 seater; 6 cylinder engine, 2912cc. Triple 1.5" SUs. Restyled grille with vertical bars
BT7: Open 2+2 seater, same as BN7
3000 MKIII
BJ7
BJ8
March 1962 - December 1967 BJ7: 2+2 seater with roll up windows, wrap-around windshield and convertible top. 6 cylinder, 2912cc, twin 1.75" SUs (badged as MKII)
BJ8: Same as BJ7 except restyled interior with wood dash, revised exhaust system and twin 2" SUs