j_magers said:
Well then its an 86.5 to 90 engine. The serial number starts with 7M.
Thanks Jay
all 7M motor serial numbers start with 7M. look at the motor mounts and the crank to figure out the year. if they're square motor mounts, it's a pre '89 motor, if they're round, it's a 89.5+ motor.
if it has a 6M crank, it's an 86-89 motor, if it has a 7M crank, it's a 90+ motor.
thats what jeff was saying. the serial code on the block has nothing to do with that, or at least we dont know what it means so we cant tell...
-shaeff