Re: New Camshaft in '66 427 Block
YES, you need the groove! The very first engine I put together (an L72 w/ an early 427 block) required the grooved camshaft, but I didn't know that until I went to prime the engine and no oil would get to the top end. Luckily, Mo had a book @ the parts store with the spec for the groove so he threw it on a lathe and cut the groove, and it worked like a charm.
I'm thinking the grooved cams are still available, though? Call Bullet Cams and speak w/ John Partridge, he will fix you up.
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