I have an early small block 350 that for the life of me I can't get the valve covers to stop leaking. I tried the cork and rubber gaskets and now I'm going to try using a rubber gasket with the steel core. The valve covers themselves are stamped and the heads have studs in them for holding the covers down. I've cleaned the surfaces on the head and valve cover a few different times, tried everything from tightening the nuts down from 45 inlb to 5 lbft. I know the heads aren't bad cuz they weren't leaking before I decided to take the valve covers off the engine a little while ago. Any suggestions on what else I should try? Should I be using a specific pattern for tightening the nuts on the studs?
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