Quote:

Typo?
Intake valve closes sooner.

Both valves open sooner and close sooner in relation to TDC of the intake and exhaust strokes, if I am remembering correctly Either way advancing the cam, moving the intake lobe center closer to TDC makes more torque at a lower RPM and moves peak HP lower in RPM also, you gain bottom end and loose a little top end. A lot of the cam grinders will spec a cam with four degrees advance built in, say the cam is ground on a 110 lobe seperation angle and they will have you install it with a 106 intake lobe center So straight up off of the cam card could still be 4 degreees advanced

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)