98 vs 99 head gaskets
06-24-2005, 12:16 PM
#21
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Originally Posted by PREDATOR-Z
GM MLS are thicker than graphite. .060 compressed. Not good for quench purposes.
Cometics are the good ones but good luck finding any in stock (3>4 week backup order)
Cometics are the good ones but good luck finding any in stock (3>4 week backup order)
thats cause I just bought their last ones a week ago 
06-24-2005, 05:37 PM
#23
Originally Posted by oange ss
what gaskets would be good for quench ?
Originally Posted by oange ss
dont wanna go to small to help keep compression down, thanx
Search for "quench", it has been discussed in depth on several occasions...
Shawn
06-25-2005, 12:36 AM
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Originally Posted by 2xLS1
Actually, I took that pic and it is of a head off of my 99, casting #853. Any 853 casting will have the notch and they were used through 00 MY. The GM graphite gasket will not have a notch there. The problem is if you use the 02+ GM MLS gasket with heads with the notch, it will leak coolant there. The graphite gasket seals around that notch and the GM MLS does not.
06-25-2005, 01:04 AM
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Originally Posted by 2xLS1
Actually, I took that pic and it is of a head off of my 99, casting #853. Any 853 casting will have the notch and they were used through 00 MY. The GM graphite gasket will not have a notch there. The problem is if you use the 02+ GM MLS gasket with heads with the notch, it will leak coolant there. The graphite gasket seals around that notch and the GM MLS does not.
06-25-2005, 03:08 AM
#27
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I was told by a sponsor here that the notch is around .060 deep. So unless it was welded in (which a lot of them do to be able to use MLS), you'll have to use graphite.
