Jerry this is a new cam if you take a straight edge and put it on the journal and slide it to the lobe it hits the lobe and has to be raised to slide over the lobe. That is the reason it won't go into the block. I doubt the cam bearings are put in wrong Bought a Lisle cam tool so I would put them in correctly I plan on getting a new set of bearings for the motor if I can find a cam for it or if is worth the effort to turn the journals on the other cam but the cam that is for it won't go the lobe sticks past the journal.