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Originally Posted by 94Z28Conv.
I replaced head gaskets on my 98 Lumina 3.1, after I had it all back together the lower intake was leaking oil from where it meets the block on both sides, I don't know if I didn't put a good enough beed of silicone there, but is warping of the lower intake possible?
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Silicone will seal a straight or crocked or warped surface.
But surface has to be good and clean.
No oil or greese on surface and use a good quality silcone.
What kind of silicone did you use?
MT