Quote: How much flow does the CNC work show @ .600-.650 lift? How does that translate in horsepower gain?
It really will depend on how extensively ported the heads are now. If Dwayne spent a lot of time with them hand porting them, I doubt Jeff's CNC program will improve it much, if any at all. That's not a shot at Jeff's program in any way, it's just that Dwayne is a very accomplished wedge head porter and there's only so much that can be done. If the heads are just touched up, then there could be significant gains @.600-.700 lift.
