I ran a 427 truck block in my pro stocker years ago---used 4.0 crank (stock GM 454 steel) a piston that was 454 compression ht and an alum rod that was .525 long

We ran 8.0 at 169+ mph---just couldn't get into 7 seconds or 170 mph
changed to bow tie block at 4.560 bore 4.0 crank (522 inches) was one of the first cars into sevens and over 170mph

Now a days you can buy manifolds for the tall decks and won't need spacer plates

Jerry