how to raise compression in motor

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Aug 5, 2012 | 04:45 PM

pdasterly

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how to raise compression in motor

forged ls2 9.1 cr.
setup was going in my camaro but ended up selling along with turbo kit. motor is now going in a 2004 gto but I havent found a forced induction system for a decent price, how can I raise the compression in the motor without swapping pistons. and by how much?

Aug 5, 2012 | 04:48 PM

Fbodyjunkie06

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Mill the heads.

Aug 5, 2012 | 04:50 PM

roninsonic

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You can get some thinner head gaskets or mill the heads.

Aug 6, 2012 | 01:39 AM

RezinTexas

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in addition to the above, you can deck the block.

Aug 6, 2012 | 02:05 AM

itsslow98

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First question to ask is will the motor stay N/A or do you plan to run boost/nitrous later on? If you plan to throw boost at it I would not mill the heads.

Aug 6, 2012 | 06:21 PM

redtan

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You can do all that, but I doubt you're going to get it up that high.

Maybe some milled 5.3 heads with 0.040 gaskets will get you just about to 10.0:1.

Aug 6, 2012 | 08:30 PM

wildcamaro

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5.3 heads would be the cheapest route...personally I don't think the thinner head gasket from cometic are really worth the money since milling heads will get you there quicker...

If I was you I would get some Texas speed 5.3 heads and if you still want more then mill em...