Originally Posted by Maxwell
I know shricks will do a custom grind at your request but be prepared to pay through the nose. IF you add more lift you will probably need to re-engineer other parts like the valve springs and maybe the valve guides? I think it's cheaper to go to larger pulley or do a complete turbo swap over.
The advantage of the turbo swap is that it leaves you free to start looking at 2 bar boost up to 3 bar boost. You're talking about 522 to 700 horsepower at that point. You also no longer have the supercharger clutch issue.
You're going way beyond what anyone has done with their cars at that point.