When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
460 has a deck of 10.3 - 400 has a deck of 10.3 - rod lengths are similar.
4.5 in. stroke cranks are readily available for 460's with a 6.7 rod
my flawed logic is that since the decks are similar there should be room for a 4.5 stroke crank in the 400...? A 4.250 fits not problem...so how far can we go before we run out of room?
But can they be bored to 60?, i thought it was only safe to do it to 40 due to cylinder wall thickness....
The 351Cs had thinner walls than the 351M/400 blocks. They couldn't be bored +0.060. It is a good idea to sonic test the walls on a 351M/400, before boring +0.060.
Nice so you have a 414, if i only knew earlier i would´ve bored it to 60 and not to 30 ....
Taking yours .030 over was a good call. Finding pistons for an .060 over was a PITA. Also i have no more rebuilds left out of my block, when it goes, i have to find a completely new engine, block, etc.... You should still have another rebuild out of yours.