Changing over from a 350 to a 455 in a 1970 Cutlass S. Wondering if all brackets interchange? (a/c, alt, and p.s) any help will be greatly appreciated. Thanks.

 

If nobody answers try posting this in technical

 

I moved your thread. The Site Help subforum is for questions about using the website.

The 1970 brackets have two sets of holes where needed to allow the same brackets to fit both short-deck SBO and tall-deck BBO motors.