Generation IV Internal Engine - Which gasket for my Ls2?

So two different company told me two different gaskets to get for my stock ls2 with 317 heads to 9:5:1 compression, the is a turbo build project


The first guy said: Bore: 4.130 with a .060” thickness would yield an approximate compression ratio of 9.55:1. Bore: 4.130 and .070" thinkness will result in a slightly lower compression ratio of 9.36:1.

the second guy said It would require a .080 gasket which is really thick so we don't recommend it. , also, it would be custom

So which one would get me to my goal? thanks for your help

P.s there flat top piston

For a stock LS2 bottom-end and stock 72cc chamber 317 heads, you'd need about an .080" thick gasket to get down to 9.5:1 static compression. Personally, I'd rather run a bit higher compression with a reasonable quench rather than lower compression and a loose quench.

For a stock LS2 bottom-end and stock 72cc chamber 317 heads, you'd need about an .080" thick gasket to get down to 9.5:1 static compression. Personally, I'd rather run a bit higher compression with a reasonable quench rather than lower compression and a loose quench.

Thanks for the help, im going to try the ls9 gasket out

Anytime! We keep the LS9 gaskts in stock and can usually ship the same day they're ordered!

http://www.texas-speed.com/p-2129-gm-62l-multi-layer-steel-ls9-7layer-cylinder-head-gasket-sold-individually.aspx