Quote Originally Posted by TheMadcat View Post
Have you gone over the Intake and Exhaust on your car? If you have not swapped out the LS4 intake mani and stock downpipe/exhaust, putting a bigger cam in is going to cause more frowns than smiles.
I haven't got down in dirty with it yet I have a chance to get a ls1 intake(what else do I need) and exhaust I'm building my own 3inch kit 50 bucks for the stick and 30 to have it welded and bent to specs