3885069 Intake Manifold Gaskets?

[Ken K.]

Before I remove my stock 3885069 intake manifold on my 1966 427/425hp motor, What type of intake gaskets should I be looking for? Is there different gaskets for the different shapes ports? I think this manifold has rectangle ports. Is this correct? I'm looking at a Fel-Pro engine gasket rebuild set (KS-2618). Does anyone know if this set has the correct gaskets for this intake? Thanks

[William C.]

Re: 3885069 Intake Manifold Gaskets?

rectangular ports, but the current gaskets do not follow the outline of the intake in the sam manner as the original. If you have the originals on your car, make a template and modify to suit.

[Clem Z.]

Re: 3885069 Intake Manifold Gaskets?

I think GM still sells the one used in the L-88 BUT they have the heat riser crossover blocked but that can be removed

[Stephen L.]

Re: 3885069 Intake Manifold Gaskets?

I made a set that has the correct outline using a new set from NAPA and cutting off the excess. Contrary to what some think, the gasket does NOT follow the contour of the manifold perfectly. If you do that you expose the holes in the heads that are around the heat crossover. I have some photos showing the possibilities, and the correct configuration. Email me if you want some