What is the best exhaust manifold gasket for stock manifolds? All I have used are the Felpro # MS 90021 and I am looking for something less prone to leaks.

 

As you know the factory didn't use gaskets. I like the copper gaskets best, Summit carries them.

 

X2

 

Thanks for the replies. Are these the gaskets you are referring to?
http://www.summitracing.com/parts/SUM-111440/

 

I have great luck with both the felpro and summit gasket sets.
Whatever I find the best deal on is what usually gets purchased.
Full sets of gaskets are usually a much better deal than buying individual gaskets.

 

yes, 111440 is what I use.

 

i installed a set of manifolds last summer. i cleaned the head real good and put the manifolds on a belt sander for just a small amount. i installed them with no gaskets and they still don't leak. these manifolds were in real good condition also.

 

In 35 years of owning and driving Oldsmobiles, I've never used gaskets with stock manifolds, except on the roller cam 307s where the crappy tubular manifolds required them as factory equipment.