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Thin head gasket 243 head swap

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Old Jul 23, 2009 | 09:27 PM
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Default Thin head gasket 243 head swap

hey guys im putting a set of ls2 heads on my stock bottom end ls1 and I want to bump the compression a tad bit more by going with some thinner head gaskets but the .040 cometics are like 160 bucks are there any other brands that have a gasket that will bump my compression up but are a bit cheaper?
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Old Jul 24, 2009 | 01:50 AM
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Screw the cometics. Too many problems with blown head gaskets with those. Just stick with the GM gaskets.
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Old Jul 24, 2009 | 06:47 AM
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The key to getting any gasket to work well is surface prep. If it's not perfect, keep working on the surface to get it perfect to make sure you have a suitable surface to seal.

As for cheaper gaskets, try Felpro. I think they are ~$45 each.
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Old Jul 24, 2009 | 08:54 AM
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I think this is a great move. I've had really good luck with a properly installed set of Cometics. I'm going to do some testing on this at some point so I can get you a idea of power gains just from the gaskets.

If you need a set give us a call, we stock every thickness & bore you could imagine!!

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Old Jul 27, 2009 | 03:58 PM
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Anyone know the gm part number for the gaskets??? Or is there a difference with stock ls1 gaskets
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Old Jul 27, 2009 | 06:24 PM
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I'd love to see the difference in going from a factory mls gasket of 0.056" to a cometic 0.040".
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