The chassis number for these models is composed of two initial fixed letter 'BC', where the C stands for continental. Followed by a number that can go from 1 to 151. Finally two letters of which the first one determines the series of the model.
Left hand drive models have an L preceding the last two letters.
The chassis number can be found on a plate attached to the engine compartment bulkhead.
Release dates
Chassis number
Modification
Modification introduced at
Jul. 59 to Jun. 60
BC1AR to BC151AR
Improved type crown wheel bolts (Phase 1)
BC45AR
Introduction of seamless propeller shaft
BC66AR
Hollow camshaft replaced by solid camshaft
BC38AR
Automatic choke - otter switch
BC106AR
Lagged air pipes
BC112AR
Bi-metal cover
BC137AR
Butterfly valve
BC114AR
Sealed thermal delay switch
BC11AR
Improved type crown wheel (Phase 2)
BC52AR
Engine vibration cushion fitted
BC1AR
Improved throttle controls on left-hand drive cars
BC2AR
Modified hydraulic tappets
BC139AR
SU carburettors
BC149AR
Jun. 6O to Jul. 61
BC1BY to BC1O1BY
S1 type front silencer with modified pipes and flanges
BC16LBY
Modified starter motor
BC1BY
Fast idle cam bracket
BC3BY
New front shock damper mounting plate, brake pedal gap plate
BC1BY
Shortened extension cone on fan mounting; extension of radiator bottom outlet pipe and new bottom water hose
BC10BY
New radiator filler cap seal
BC21BY
New starter motor
BC40BY
Valves and fittings
BC46BY
Interior lights -changes to switching arrangements for instrument and capping rail lights and new map lamp, cigar lighter with amber glow ring
BC72BY
Dynamo mounting bracket, cylinder head assembly and valves, etc
BC51BY
New silencer assemblies
BC76BY
New front shock damper body
BC92BY
Valve rockers and shafts
BC78BY
Crankcase modified to raise oil level in camshaft trough
BC72BY (except BC97BY)
Air conditioning - Tecumseh HH compressor replaced by York Shipley
BC90BY
47”servo cams reducing front to rear brake ratio
BC93BY
Accelerator pedal stop on right hand drive cars, gearbox throttle valve control on right-hand drive cars
