stock pistons and big valve heads
11-21-2011, 02:02 PM
#2
Senior Member
DYNO OPERATOR
Join Date: Jan 2004
Location: central Illinois
Posts: 459
stock
It's a trade off at best.
If you advance the cam, the intake V/P will decrease and the exhaust V/P will increase. If you retard the cam the intake V/P will increase and the exhaust V/P will decrease.
If you advance the cam, the intake V/P will decrease and the exhaust V/P will increase. If you retard the cam the intake V/P will increase and the exhaust V/P will decrease.
11-24-2011, 09:57 AM
#4
Senior Member
DYNO OPERATOR
Join Date: Jan 2004
Location: central Illinois
Posts: 459
stock
It really doesn't work like that.
The only way to know is to do a valve to piston clearance procedure on both valves and then determine if it correct clearance exists. Moving the cam just to get clearance may not give you the performance you need.
You can look online on some of the cam company sites like Comp Cams for the correct method. It does require special tools and a good working knowledge of engines to not bend a valve or pushrod during checking.
The only way to know is to do a valve to piston clearance procedure on both valves and then determine if it correct clearance exists. Moving the cam just to get clearance may not give you the performance you need.
You can look online on some of the cam company sites like Comp Cams for the correct method. It does require special tools and a good working knowledge of engines to not bend a valve or pushrod during checking.
