Originally Posted by therainforest

iam with everyone else on this porting the head with stock cams and stock compression can acually hurt you. sometimes less is more. if your ports are too big the air wont have enough velocity to enter or escape through the ports due to the fact that you are not pushing or pulling any more air then before but you have a larger diameter area to push it through you will most likely lose power untill you up the amount of air or boom happening in the engine