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Old 10-04-2006, 07:50 PM
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Default Head Gasket

I am looking to raise my CR a little with a thin head gasket .04/.045 . Does anybody but Cometic make these? Fel-Pro has one but it is for a 4.xxxx bore. Will this be ok to use on a stock 3.9 bore engine? Any body got part no. for the right gasket?

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Last edited by YankeeVert.; 10-04-2006 at 08:13 PM. Reason: spelling
Old 10-05-2006, 12:11 PM
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I just received my .040 gaskets (they make them down to a .030) made by cometic. I purchased them from Texas-Speed.com part #SDL391040 standard 3.910 bore. I wouldn't recommend running an over size bore head gasket.

I was running the GM performance gasket which is .051.

Best wishes,

J.R.
Old 10-05-2006, 05:00 PM
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Originally Posted by 1stz06
I just received my .040 gaskets (they make them down to a .030) made by cometic. I purchased them from Texas-Speed.com part #SDL391040 standard 3.910 bore. I wouldn't recommend running an over size bore head gasket.

I was running the GM performance gasket which is .051.

Best wishes,

J.R.
Thanks for the info.
Old 10-06-2006, 10:44 AM
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Originally Posted by 1stz06
I just received my .040 gaskets (they make them down to a .030) made by cometic. I purchased them from Texas-Speed.com part #SDL391040 standard 3.910 bore. I wouldn't recommend running an over size bore head gasket.

I was running the GM performance gasket which is .051.

Best wishes,

J.R.
What C.R. ratio would that give me with a 64cc head?




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