Head gasket question
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TECH Apprentice
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From: Stoughton, Wisconsin
Head gasket question I am in the process of building an L92 headed 408 (.030" over LQ block) and am not sure which head gasket to run? The L92 head gasket is for a 4.065 bore but I'm not sure of the compressed thickness. I was just going to run the LQ4/9 head gasket which is .051" compressed. I need something close to that to keep my CR of about 11.3 and my quench around .045". I don't want to spend the money on Cometics if I don't have to and I get a hell of a deal with factory parts, so I'd like to stick to Genuine GM if possible. If you guys could help me out with part numbers, bore sizes and compressed thickness of several gaskets, that would be great! Thanks.
You could probably go with a GM MLS 6.0L head gasket. I believe they are ~4.040" bore size. Should be a compressed thickness of .054" or so. They will probably work fine for you. Part Number 12589227. We have them on the shelf if you need a pair!
Jon
Jon
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Thread Starter
TECH Apprentice
iTrader: (5)
Joined: Sep 2003
Posts: 358
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From: Stoughton, Wisconsin
Just had PatG spec me a cam-239/247, .624"/.624, 115+4. So we'll see what it'll do this summer when I get it in! Anybody have a power estimates/guesses for the hell of it??
