Whats the thickness of GM head gaskets?

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Dec 22, 2005 | 11:48 PM

MyGoatBites

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Whats the thickness of GM head gaskets?

Anyone know the thickness of the factory head gaskets on the 2004 LS1 Vet/GTO motors?

Dec 23, 2005 | 08:19 AM

SideStep

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Quote:

Originally Posted by MyGoatBites

Anyone know the thickness of the factory head gaskets on the 2004 LS1 Vet/GTO motors?

The advertised thickness (compressed) is .060 for the new MLS and .054 (2001 and older C5s) composite... Members have measured different results, but that is from several different caliper types...

Dec 23, 2005 | 08:32 AM

TAQuickness

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I meaured 0.049" compressed thickness on the OEM MLS gaskets. HPE came up with the same numbers - with different calipers than mine

Dec 23, 2005 | 04:14 PM

MyGoatBites

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Thanks TA, I keep forgetting to tell you we have the same mods on our cars. Only small difference is I use Royal Purple blinker fluid, its good for a couple extra horses you know.

Dec 23, 2005 | 05:55 PM

TAQuickness

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Quote:

Originally Posted by MyGoatBites

Thanks TA, I keep forgetting to tell you we have the same mods on our cars. Only small difference is I use Royal Purple blinker fluid, its good for a couple extra horses you know.

I prefer Mobil 1's.

Dec 23, 2005 | 07:02 PM

Joe Racer

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Quote:

Originally Posted by TAQuickness

I meaured 0.049" compressed thickness on the OEM MLS gaskets. HPE came up with the same numbers - with different calipers than mine

I just finished an engine using the same gaskets, which measured .048" compressed. Looks like the advertised number is off a bit....

Dec 24, 2005 | 11:52 AM

oange ss

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i asked the same thing several months ago, that advertised thickness has to be uncompressed...anyone check the compressed thickness of the older graphite ones ? i measeured them out of the box at .053, so i know the advertised compressed thickness is not correct

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