Quote Originally Posted by kerrige View Post
I don't know how much more you will really get by changing cams. Porting the heads and allowing it to breath better will help IMO, but changing the cam seems like a waste of time to me. For a small motor I think it will move the power band move up, but it won't net valuable gains unless you are planning to run 65-140mph roll races. You will want 4.56 gears for that monster cam.

Well 65-140 is where its at!!! That my plan. I have seen lots bigger cams in 5.3s. This will strictly a highway roll truck.