Ever seen a pontiac 8 lug brake drum that's also the wheel center?
Late 50's to mid 60's.
How about different engine blocks for buick, olds, pontiac, chevy and Cadillac...all the way into the 80's? Granted they all had the same trans pattern.....
Buick, olds and pontiac (commonly shortened to BOP) had one bellhousing pattern, and chevy has a different one. There's also a BOP specific rear end and a chevy rear, and a BOP specific carburetor, and a chevy one, etc etc. but that's referencing different companies doing different things
Different engines was done as a seperate identity thing, like not producing a mopar with a ford motor they werent cranking out pontiac tempests with small block chevies.
