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Will head casting's # 243 off a 04 Z06 work on my 99 LS1, would I use LS6 or LS1 head gaskets? I already have Z06 intake, G5x2 cam, longtubes, Breathless vortex, ported throttle body, etc. putting down 390RWHP at last dyno, Thanks! Greg
 

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Yes, they will work. As far as headgaskets, i'm not 100% sure, but I think either headgasket would work (ls1 or 6, i think they're identical) as long as they were designed for your year block.
 

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Discussion Starter #3
Thanks for the reply :cheers:
 

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They will bolt right on Greg.
Gaskets are the same.
CR will go from 10.1 to 10.4
 

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Discussion Starter #5
Thanks Tom! :cheers:
 
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