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Generation III Internal Engine 1997-2006 LS1 | LS6
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need some compression figuring help

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Old Dec 30, 2005 | 11:59 PM
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69firebird
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From: hurst tx
Default need some compression figuring help
HI,

I have a flat top piston and 5.3 heads what kind of compression am I at?

and can I use a thicker head gasket to lower the comp some?
THanks
ed
firebird455@gmail.com
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Old Dec 31, 2005 | 12:07 AM
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how big are the chambers on the 5.3 heads and what is the size of the gasket compressed?
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Old Dec 31, 2005 | 10:33 AM
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the chamber size is what ever the stock 5.3 is which I think is 62 but Im not sure

the gasket is a felpro that I have now
thanks
ed
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Old Jan 1, 2006 | 12:53 PM
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With .002" piston to deck height and a .040" compressed gasket you will be around 11.1 CR. With a .050" compressed gasket you will be at 10.8 CR. Those are both with the 62cc chambers you said above.
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