I bought a bunch of 392 hemi stuff from the estate of the former head mechanic for R. C. Williams and this camshaft was among it. It looks to have barely been used. I'm no engine builder and certainly not a cam grinder so you're gonna have to bear with me and I'll try to give the best description I can. I'm guessing it's designed for a blower. The numbers on the cam are: 306-5/306-5 R14 T6484 If I measure the base circles and lobes with a mic. I get the following: 1.080 base circles with a lobe that measures 1.518 1.080 base circles with a lobe that measures 1.518 as much as cam cores cost, it could be reground I wish I could be more accurate. If anyone out there that knows more about this stuff could add any info I would appreciate it. I have 6 cams in total that I will be listing as well as a bunch of other parts