Heat crossover ????

You know you can't use a steel shim gasket with aluminum intake, It will always leak.
At some point sooner than later you will have a major mess on your hands.

I knew I had a copy somewhere of the 6 pack intake gasket bulletin.

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I'm curious if the issue of the metal gaskets goes away when using aluminum heads as well. Since it's apparently the dissimilar growth rate of the CI and aluminum.