BIGCOWL-IMP

I sold a 96 Impala motor to a guy with a 94 z28 and he called and said the block is different and the motor mounts don't work......
Either he don't have a Lt1 or i sold him a L99 motor.....maybe ??? I took the motor out of a 96 impala but maybe someone switch it ???............Is that even possible ??.Naaa.....no one would put a L99 motor in a impala.........He said the bolt holes are different on the block....Maybe he don't have a true z28 ???.......Heres the vin just incase some one can tell me if its a true 94 z28.???............... 2G1FP22P1R2201938

BIGCOWL-IMP

If he has a 94 Lt1 motor then what should the numbers be on the block and where are the numbers ?? If someone had i link or something that would be great..

BIGCOWL-IMP

If the motor i sold him is a 96 lt1 motor and not a L99 how can i tell the difference ??? I know they sure look the same.....

Injuneer

The 350ci LT1 block has “327” (last 3 digits of the GM casting # 10125327) in several locations, including front, under the driver side head, near the bottom of the block..

The 265ci L99 block has “4.3” cast on the side of the block. Casting # is 10168588.

Injuneer

On the Camaro, the 8th digit of the VIN is the engine code. V8/LT1 is “P”, so that checks out.

BIGCOWL-IMP

I went to the guys house and he lied to me........said he tried the f-body motor mounts on the other block but would not fit...That was a lie.........when i got there i seen what was going on so i took his f-body motor mounts and bolted them on the block i sold him and everything worked...........he never took them off his block and tried them on the other block...

Injuneer

Good. There's no diff on the mount provisions on LT1 blocks. When we built the stroker, I bought a used block from a yard in Tennessee. My shop said they were pretty sure it came out of a B-Body. Bolted right up.