Update: Pontiac shows it as a 1974 455 block code YY, 485428 4bbl HEI,
I still need GM gearheads to validate before ordering.
I am a Mopar guy, but I couldn't pass up the deal and opportunity to make a Bandit clone; I already have a donor roof section.
I recently bought a 1978 T/A sport coupe.
Originally, it came with the 6.6l 400.
I was tearing it down for a rebuild but ran into some issues.
The engine is not a 400.
Heads are 4X, with a secondary stamp of 1H, and the front edge has #206318 YY. Ang G203
Block: #485428
So if I am...