[marcocsx3121]

Actually, the timing numbers for the production LS7 cam are probably quite mild. My LS6 427 (C5R block) makes 528 HP at the rear wheels (around 620 at the flywheel) with heads and intake that can't flow nearly as well as the LS7 pieces. My cam is 236/242/112 LSA with .610" lift, definitely not emission friendly. I suspect that the LS7 engine can pick up 50-80 HP with a simple cam change.