Join Date: Sep 1998
Location: Ontario, Canada
Re: Intake manifold gasket installation
If you bought the Fel-Pro gaskets that already have a bead around the ports then you wouldn't need to apply any. Don't use the rubber gaskets, use Permatex High Temp RTV.
For the bolt threads use Permatex 2 non hardening sealant. Don't use silicone, it won't last. And don't apply any sealant to the intake or exhaust ports (gas) and silicone don't mix. Just apply to the water ports.
Mark 70 Z28 M22 3.73 Z21 Z87 - Lunati 20120121 Roller Cam
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