Best 383 valve cover gaskets to stop all the leaking

AndyF said

The secret is a rigid valve cover with a thick flange. If you have a good valve cover you can use any gasket and have no leaks. I use Cometic valve cover gaskets but Superformance will work as will some of the FelPro gaskets. Even the Moroso gasket will seal with these valve covers.
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Ur covers are kick a$$, but w/ raised port heads , and 2'' headers , all those soft gaskets burned up on mine. The only ones that have stood up are hughs burn proof and a pair of hard felpro gaskets that look and feel just like the hughs gasket , since I removed the dam header wrap, (I hate that stuff) , still have to tighten the covers down after a few heat cycles , a little titer than a guy can tighten a screw driver . Running crankcase vacuum helps a "WHOLE " BUNCH !