302 heads on a 360?

jeeper, the heads deal was cylinder heads 101 I think that I did it in engine performance.


1qwikScamp, This is all motor and pump gas, I don't believe in NOS, in fact the guy they call Mr. 6.00 is a engine that I did a few years ago, he made between $60,000.00 and $75,000.00 in 2 years racing here in Georgia, South Carolina, Tennesee, and Alabama he was invited to the other states and he went and took there money. As for comparing them to X heads well they don't look as good on the bench but they have other advantages that the X heads don't have even with porting. The key to making power is the right valve size and port shape along with the right valve shape, size, and seat angle's.
As for the 302's for port volume they come from the factory at 120 cc's and the heads that we used were 126 cc's and they flowed 213 cfm's @ .400 and held it to .600 lift with a peak of 218 cfm's @ .650. I do have a set that flows 232 cfm's @ .500 with a different valve size and different port shape. The heads that we have on this engine are 62% efficent and the heads that I have with the different changes are 67% efficent. The more efficent the heads the better the engine will perform and the new heads are 136 cc's with very good flow for the port size.