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Can you help identify the engine i have. I have been trying to decode the numbers. I havent pulled the covers or used a bore scope to check the mains. Hoping to get visual clues without having to dig too deep. I know about the fuel filter. It will be replaced. This is in a 73 vette.
Looks like K05 26 CMJ decodes as K (McKinnon Industries, Canada), 05 (month - May), 26 (day - 26), CMJ (engine broadcast code - 350 2bbl).
Tough to read the third character in the VIN derivative, but it looks like either B (Baltimore) or R (Arlington) which would make it a Chevelle, Monte Carlo, or full size Chevrolet. Edited to note that the broadcast code and VIN derivative indicate that this is a 1975 model year car.
BLOCK ID: if ya really wanna KNOW, find the block's casting number and block's casting date: at rear upper ledge just beyond distributor.
HEAD ID: Also, lift off Both valve covers and look in-between valve springs for each head casting number and casting date.
all above characters are RAISED, Not stamped. JME: None of this digging deep.
If IF this motor began life as a Two-bbl carb piece, And has Never been rebuilt; it likely has Dished pistons + likely Cast iron crank.
*Appears to have aftermarket Edelbrock Performer EPS intake manifold; perhaps a clue there May be a squarebore carb of some make ?
McKinnon essentially one in the same as GM St. Catherines of Ontario Canada
Last edited by Rebelyell; Nov 21, 2025 at 01:25 PM.
Engine ID
