Yea I was worried about the 488 gears but thats what ford gave em from factory with the LS so Im not going to change them anytime soon cause keep the money for a good intake and carb. Wahts the max CFm Im looking at? 650? 700? Since Im this deep should I get higher compression rings and pistons? Iunno since Im this deep Im dead set on getting more power outter her in the range I want which is idle 5500