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Now with a degree wheel on the crank, a dial indicator on the piston, and one on the lifter he degrees the camshaft. The purpose of degreeing a camshaft is to ensure that it is phased correctly with the crank. Cam degreeing is a full story on its own and not something we can explain in one caption. Comp offers a full degreeing kit that has a DVD dedicated to this process if you really want to know the full story.