Need help calculating compression ratio

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Apr 29, 2017 | 06:56 PM

70c10

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Need help calculating compression ratio

Hey guys getting ready to order parts for my build. Broke #7 ringland so now I'm gonna forge the bottom end on my single turbo 2001 ls1. I'm looking at the -3.22 cc flat top wiseco piston with my stock 241 heads and ls9 head gaskets. Does 9.8:1 sound about right on the finished comp ratio? I will be running 91 pump gas with the possibility of meth. Turbo is a 70mm w/.96 ar. Would you recommend the compstar H beam rod or something else? Thanks in advance.

Apr 30, 2017 | 08:59 AM

tblentrprz

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Teach a man to fish and feed him for a lifetime. Google 241 chamber volume, ls9 gasket specs and then compression ratio calculator and plug in the numbers. Good to go.

Apr 30, 2017 | 10:34 AM

Nathaninwa

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From: Washington

The big one is also knowing how far above or below the deck the piston is. And I realize it's boosted, but also understanding quench and working with that would be good too.