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Whats the best head gasket for 3.900 bore

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Old 12-20-2015, 06:44 PM
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Default Whats the best head gasket for 3.900 bore

I'm rebuilding my LS6 with forged internals and PRC heads, ARP headstuds, D1 with 15psi or so, maybe a little spray too. Whats the best gasket, youve had great results with.
Old 12-20-2015, 06:46 PM
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I'd stay with the stock GM MLS ones... good n cheap
Old 12-20-2015, 06:53 PM
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Originally Posted by 383lt1ta
I'm rebuilding my LS6 with forged internals and PRC heads, ARP headstuds, D1 with 15psi or so, maybe a little spray too. Whats the best gasket, youve had great results with.
Ls9 head gaskets are great because they are 7 layered and designed for boost.. Plus they maintain stock .053 GM Mls thickness as any other GM Mls head gasket does
Old 12-20-2015, 07:19 PM
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Better check your heads before you buy gaskets. Sometimes the chamber width will dictate gasket bore, not the cylinder bore itself.
Old 12-20-2015, 07:40 PM
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Originally Posted by vettenuts
Better check your heads before you buy gaskets. Sometimes the chamber width will dictate gasket bore, not the cylinder bore itself.
This. Nothing worse than it sealing the fire ring and having to go back in for corrective surgery. Some 3.9" bores still end up using 4.1" gaskets due to the combustion chamber dimensions from unshrouding the valves



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