Head Help

Stock X heads flow somewhere around the 200 - 210 cfm, stock. And that would be the better flowing castings. Poorer castings down 10 cfm's.

Beware of fully poerted heads and the set up your going to run with through out the rest of the car. Also, if the cam is not lifting to the point of where the head flows this much, then it is mostly a waste. Not allways, but often the lift needs to be at peak lift and numbers like what your looking for are very high lifts.