help with piston / valve clearance

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Aug 2, 2009 | 06:12 AM

Ws6power1

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help with piston / valve clearance

Hey guys I need a little advice here. I'm about to do a head and cam swap on a stock ls1 bottom end. I have ported 243's unmilled with dual springs to install. Can I run the ms4 cam with these heads without having to get valve reliefs cut in the pistons? Would I be better off just running a cam with less lift so that I can use the thinner cometic head gaskets and bump up the compression ratio? Any advice will be appreciated.

Aug 2, 2009 | 07:03 AM

99tankta

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if i'm not mistaken, duration is what you need to look at for piston clearance. I think you would need to flycut but im not sure. i had to fly cut, its not all that difficult.