Valve-Piston distance

70aarcuda said

and now much duration either...

just remember it is not the max lift that causes problem..

but during the overlap period of the camshaft where the exhaust is closing and the intake is opening that the Valve to piston clearance is critial...

that is why advancing or retaring a cam with out checking clearance can bite you in the butt...

Click to expand...

I saw a kid on another message board that I know destroy a really nice brand new engine by not checking this and/or not using a degree wheel. I felt so bad for him because he's one of those kids that never has any money...there he was all proud of his new motor with all of the good parts he saved up for....gone.

So good point! BJ, if you need help with any of this, please post pictures and questions man, by all means.