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valve relief help needed

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Old Dec 23, 2012 | 08:47 PM
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M1SERY's Avatar
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From: near Beech Bend race way
Question valve relief help needed

Uncharted water, help needed

I'm in the process of fly cutting my pistons and i was looking for some references to figure out how many cc i am cutting into my piston so i can calculate my compression ratio

if i'm cutting eyebrows for the lack of a better word, does any one know how many thousands equal 1cc in my stock ls1 pistion,

tried the search engine, no good references just vague and generalized, what i did find, i didn't know if it was a cubed measurment or measured by the depth of eyebrowed cut in the piston.

2.02"/1.575" Valves
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Old Dec 24, 2012 | 04:37 AM
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The issue is you go per se .015, the center of the "brow" is deeper than the outside, so you can't just say x = y... only true way is to cc it... otherwise your better off just calculating your CR w/o factoring in the cut's.. It'll get you a ball park..
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