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6.0 block, 5.7 heads, what head gasket?

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Old 12-28-2005, 03:58 PM
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Question 6.0 block, 5.7 heads, what head gasket?

The heads are o-ringed, so it looks like I need to go with graphite.

Is there a graphite 6.0 gasket?

Is it a bad thing to run a 5.7 graphite on a 6.0 size cylinder? I would have a little fraction of the graphite in the chamber, right? But maybe that's ok, as long as the piston doesn't touch it.

Do I have choices of different gasket thickness with graphite, if I want to tweak my compression ratio? Or does the graphite only come in one thickness?


(thinking about a 402 with my TEA 5.7 heads and my STS kit)
Old 12-29-2005, 09:50 AM
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ttt, need to know something on this.

Looks like the 6.0 cylinder is a 4.0 bore, compared to the 3.898/3.905 on the 5.7. I measured a set of graphite 5.7 gaskets last night, and they are just a little smaller than 4.0, so part of the metal sealing ring will be in the combustion chamber.
Old 12-29-2005, 10:06 AM
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You can not use a gasket that is smaller than the bore size. You can use a 4" bore gasket on a 3.9" bore. But not the other way around. But that is only if you are using 6.0L heads on a 5.7L block. No gasket material should be inside the combustion chamber.
Old 12-29-2005, 02:42 PM
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That's what I was thinking too. Thanks for the info on that.

So is there a graphite available for the 6.0, or are all of them mls?

I don't want to take out the o-rings (hey I paid good money for those...)
Old 01-01-2006, 02:31 PM
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In the following thread, TwnTrboCE is running 5.7 o-ringed heads on an LS2 using an MLS gasket... So maybe I can run MLS gaskets with my o-ringed heads after all.

https://ls1tech.com/forums/forced-induction/427371-what-head-gasket-go-high-boost.html




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