Hey guys need some help here please.Does any one know what cutter dia it takes to cut the valve seal guide bosses down and what seals are most of you running for a full race car or a 50/50 street car 455.The heads are cast iron 71' 455s. I heard some people dont even run any on the exhaust side. Thanks Bryan F.
Check out Competition Products for the cutters and seals. Take a look at the VTO seals. They are better than the teflon seals - they don't have the extra spring on the top. They allow a very slight bit of oil onto the valve stem for proper lubrication. The cutters are below the VTO seals....you'll need both the .531" cutter and the appropriate pilot for the cutter (3/8" for stock 455").
