Hi, So I’ve been reading and watching lots of videos on how to do a camshaft break in. Now I have to questions: 1. Is there a way to determine push rod length without actually using a push rod checker? I ask this because my current set up is old and, I would assume if the engine’s lifters and lobes are very worn. 2. How do you set the timing when breaking in a cam? Comp Cams says lifters will mate to the camshaft and if that is the case then it will require manifold and distributor removal.