ok guy's another ? will any of these other heads like the J, X, or 587 get me the HP i want as the eddie heads would i dont care if iron or not just want the performance thanks guy's
I'd run the KB190s with the Iron Js, There a quench dome, I ran these on a .060" 360 with the XE284H cam, stock J 915 heads, RPM Airgap & 750dp, 3000 stall & 4.56 gears, 28" MT, It was a screamer & had no problems on pump premium, total timing at 35*, compression was right around 10.3.1, I think the KB191s have a tighter quench.