C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Intake manifold gaskets

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Old Jul 26, 2009 | 01:05 PM
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Default Intake manifold gaskets

There are the two logical gaskets that go between the block and the intake manifold, (Similar to the exhaust manifold), however, the FSM doesn't show anything for the area around the outside edge of the intake manifold. Does it just sit there, or do we just put some RTV around the outside edge?
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Old Jul 26, 2009 | 01:11 PM
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On the LT1 you have to put sealant on the front and rear block china walls. Put a decent size bead of RTV on each.
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Old Jul 26, 2009 | 01:20 PM
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Thanks for your help.

Larry...
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Old Jul 26, 2009 | 01:37 PM
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A lot of folks swear by The Right Stuff for the china walls - I had my engine guy use it when he put mine back together. I believe the bead should be run right up to the edge of the gasket.
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Old Jul 26, 2009 | 01:41 PM
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Originally Posted by pianoguy
I believe the bead should be run right up to the edge of the gasket.
I overlap mine just a bit.
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Old Jul 26, 2009 | 04:34 PM
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Originally Posted by STL94LT1
On the LT1 you have to put sealant on the front and rear block china walls. Put a decent size bead of RTV on each.
go as 1/2" high on the heads with the RTV. Ensure it is VERY CLEAN
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