Generation III Internal Engine 1997-2006 LS1 | LS6
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head gasket help

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Old 08-30-2006, 08:23 AM
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Default head gasket help

Getting ready to finally install H/C i've had on the shelf for a year.

Which 6.0 head gasket should I use?
"the reason for using a 6.0 gasket on a 5.7 is the fire ring on a 6.0 gasket is matched to the o rings on the head,we had to do it this way to get a better seal the 5.7 gaskets fire ring is a few thousandths smaller diameter and would have been too close to the cobustion chamber for a o ring to work"

Not a large cam and stock compression is fine with me. Really would like a C/H install kit???? (or autozone)

Thanks
Old 08-30-2006, 09:21 AM
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Let me get this straight. You had the heads cut for o-rings and now you're trying to find a head gasket that matches the o-ringed head???
Old 08-30-2006, 10:18 AM
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I purchased used heads. My understanding is that heads take a 6.0 head gasket because the cnc head gets 5.7 gasket to close to the chamber????????
Old 08-30-2006, 02:56 PM
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Do the heads that you bought have a groove cut in them around the combustion chamber?? Or, do you just need a gasket that has a larger bore diameter to make sure that the gasket doesn't protrude into the combustion chamber??
Old 08-31-2006, 07:11 AM
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i'll check tonight thanks
Old 08-31-2006, 09:38 AM
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something isnt right there...
Old 08-31-2006, 10:42 AM
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yea, but there is a wide difference in the gasket bore sizes for the ls1 from 4.060 thur atleast 4.135. I haven't figured out what a 6.0L is yet. The other question I have is the differece in 6.0L heads and 5.7L heads are, CC are different.




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