Even though the pad is small, the partial VIN would still be stamped there. Without the VIN there isn't anything else on the block to determine exactly what it is out of. If the VIN was there it would tell you where the final assembly was done, from that and the year you can find out what models were built at a particular plant.
Without the VIN, it likely wasn't installed in a new car, or someone decked it and restamped it wrong???
Something I just ran across states that starting in 1970 the partial VIN could be stamped on the front pad, above the oil filter, or somewhere on the bell housing flange.
If you find it in one of those locations, you can determine what car it came in, but not the specific engine specs.
Maybe someone will find something on the CLY code
Last edited by 1ownerT; 09-15-2009 at 12:04 PM.