Dave;
Remove that exhaust manifold from the engine and take it to a machine
shop, they should be able to plane that mating surface flat again. Alternatively
you could double up on the gaskets, or use a thicker one, between the pipe
and the manifold; but I am not sure how long that would work. Another
alternative would be to grab a manifold off of a 383, I could be wrong but I
believe that they are interchangeable with the 440 ones and 383's are easy to
find.
Best Regards
Arran Foster
1954 Imperial Newport
Needing A Left Side Taillight Bezel and other trim parts.
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