Less...Don't ever really see these heads going much over that honestly.

4.506
4.75
7.100
And as much as it takes to get what we want. I aint afraid of no RPM. but realistically it will likely peak around 7800ish.

The bore will keep it from making what I want, just to small but it is a Mopar whats a guy to do. Other than go back to the 99 stuff I was running. Not the most reliable way to make power. The heads were originally Indy 460 Predator heads like Tom has. But they are getting massaged by a very smart guy who will undoubtedly find something more in them. We will post up all the results once we get there. We are waiting on the heads to return and Jesel to make some bushings right now. Let me just say as of right now it has not been very pretty.