To be blunt, probably everything except bolts and maybe the carb.
To make matters worse, there's a 400 small block chevy and GM called the 396/402 big block a 400 in some literature. And there were Pontiac 400s, but in the '70s they installed Oldsmobile 403s in Pontiac cars.
To make matters worse, there's a 400 small block chevy and GM called the 396/402 big block a 400 in some literature. And there were Pontiac 400s, but in the '70s they installed Oldsmobile 403s in Pontiac cars.
