Can A 396 big block be bored over to 427-454 bore size? the bore on a 396 is 4.094 and 427-454 bore is 4.250, is the cylinder wall thick enough?
Printable View
Can A 396 big block be bored over to 427-454 bore size? the bore on a 396 is 4.094 and 427-454 bore is 4.250, is the cylinder wall thick enough?
No It can not be bore that much. the casting will be to thin.
If you have any question about wall thickness have the block sonic tested.Quote:
Originally Posted by vortec king
In street or prolonged use I doubt it would last. Buttttt I did get away with it in a circle track alky motor several years ago,had no other choice at the time and it lasted a season and half before it got a hairline crack in one cylinder.