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Old 09-14-2014, 11:52 AM   #6
Marv D
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Join Date: May 2008
Location: hells training ground (aka Ariz)
Posts: 3,118
Re: Out it comes again

Are you sure it's the gaskets and not wicking up the studs? Don't know your bolt / stud configuration or if the LS has dry holes or not. Just a thought.

Also the Ra- surface on the heads is apparently a big deal with the Cometic gaskets. Cometic cites a minimum roughness of 50 Ra as I recall,, may be even rougher. If it's too slick the head doesn't 'bite into ' the gasket and the head moves around,, = eventual leaking.

Just what we found in the small-block stuff,,, you mileage may vary.
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