Chiming in about parts again.. this is a "for example" I was checking out my Crane SSH-320-NC. that is 70s-80s vintage. I was cleaning it up, and polishing on it to see if it is useable. i found some pitting on the lobes so I am on the market for a cam. Now I could put it in and it would run, but over a short time the lobes would start coming apart or rounding out, and pumping the metal through the engine. Its a shame because I really wanted to use this cam, but it is aggressive and I am really not running a race car . i am now going to do the research for the closest thing to a 68 340 manual cam that i can find. Point is though check everything and determine if it is useable. especially used parts.