I would be interested in knowing what the max timing was on the blocks that cracked. the reason i ask is i run 843HP (corrected) on my 400 (aluminum caps and griddle) and we put a blower on one and made 1240 hp but kept cracking upper cylinder walls (that block was cross bolted and had a griddle on it also) I run 31 degrees of timing.
Joe
They are cracking for one reason... detonation... to SR4440
31* is a lot on a blower... but other factors also come into
play... fuel, wall thickness.. and cam.. and more... to the
OP... did you put the alum caps on at day 1 of that build and
what was the timing, fuel and cranking pressure
