Quote:

I did not see it posted, a lot of the early 5.7's we pick up @ TRA auction with bad engines sound like a rod knock turn out to be the valve seats falling out of the intake valve wiping out the ring land @ piston tops.The seats shatter & wind up thrown into the intake .Make sure the intake is clean from pieces because when the come unstuck they will damage ALL your fresh work.


I had a chance to visit with Brian (0u812) at IMM and he pointed out the same thing. It sounds to me like working with the heads off the 2006 motor core I have may be a crap shoot, possibly failing. Any opinions on this? I had hoped to stay with the small port heads for low speed port velocity, this being a 380 cube street motor build. Were all the early version heads prone to failure or just certain years?

Last edited by gregsdart; 03/18/13 07:50 AM.
8..603 156 mph best, 2905 lbs 549, indy 572-13, alky