["Me"]

I have a unknown in my 65 GTO, and I know it is not the original because I have that block as a letter sorting device in my office. I bought the Restoration Guide and Pontiac GTO id numbers but they are geared to GTO engines. I have not torn the motor down yet but it is a 2 bolt block.

By the distributor hole is what looks like 9778789. On the front of the block by the timing cover is YD with a 515052 production number just below the YD. There is no VIN #, so I am assuming it is pre 69, unless it is a replacement block. I will be tearing it down soon which will help I'm sure, but I am curious "NOW". Impatient old basterd, ain't I!

The heads are D port with 360 cast into the center exhaust, and D296 over2093 cast into the oil galley.

Is there a book that covers all Pontiacs that I could pick up to aid me in parts scavaging?

Thanks, Larry