On my BBC I have cast alum.tall valve covers they are very thick around the flange.Top center and bottom center 2 where bolts go I use 1 inch studs.Bolts in out side. Same way I did when I ran a fuel car.Gaskets are glued to Valve cover.They have never leaked.It's kind of funny people always ask,DID YOU FORGET THE BOLTS.In the real early days we held VC's on with just the spark plug Tubes on a Donovan417 or KB426.![]()
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