Originally Posted by fast68plymouth
It’s easy....... the blocks aren’t strong enough for that power level.
iagree
OP, don't start a half serious BB build with either of those blocks if you want it to live around 800 HP at or above 7000 RPM, use a good 400 block with
aluminum main caps and ARP main studs up to 850 HP twocents

Last edited by Cab_Burge; 08/05/19 11:23 AM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)