Generation III Internal Engine 1997-2006 LS1 | LS6
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ls6 heads ls1 block

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Old 10-10-2007 | 09:52 PM
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Default ls6 heads ls1 block

same flow right? ls1 head gaskets aren't blocking any coolant are they?
Old 10-10-2007 | 10:21 PM
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are you asking about coolant flow or air flow? The heads will bolt up with no problem.
Old 10-10-2007 | 10:31 PM
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coolant flow, like are the gaskets the same?
Old 10-11-2007 | 04:42 AM
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i believe the difference is the porting and the Valves.i know the 5.3 heads from the trucks will bolt up as well I'm looking at CNC LS6 heads this winter and everywhere i've looked says there is NO PROBLEM with that~Cole~
Old 10-11-2007 | 07:41 AM
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They are the same, you will be fine.




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