[Held for Ransom]

Originally Posted by poncho-mike

This is a very late build 1974 455 automatic T/A. I almost didn't buy this one because I couldn't find the engine code in the shop manual. It was a factory HEI car built in June 1974. The seller was the original owner, who claimed the engine had never been changed.

Y9?

[poncho-mike]

I believe it is Y9.

A few years later, I picked up a 74 Pontiac shop manual that had a supplement that listed the engine code. I was able to verify the VIN number stamp in the block matched the PHS after I bought it.

It was a one owner car. The owner had a farm with about a 1/2 mile dirt road, so any oil film on the motor became a paste. I didn't find the engine code until I got it home and cleaned the motor.

Mike