Quote:
Originally Posted by johnta1
I'd say the motor mount holes may be the only true 'difference'.
The 428 would be only for the 2 bolt engine mounts, while the 455 can use either 2 bolt or the newer 3 bolt mounts.
The 455 blocks from 1970 through 1974 would be the one to use for the 455's. (75 and up are questionable, but for your app probably OK)
Both will take the stroker cranks, but have to make sure the cranks are for the bigger mains. (not 400 strokers)
To me the extra cubes of the 455 block would make a difference and same price basically.
(no high rpm screamer
 |
This is all good advice in my opinion ^^