I'm trying to figure out what companies mark there camshafts. I found some with the marking "5D12" I believe it said on them. There was also a "5" stamped on the other side of the same cam. The other cam had a "3" on it and another number/letter marking. Any help would be appreciated, thanks!

 

Pics? From my experience most companies will mark their cams with at least an engraving pen. Some HKS cams actually have their logo cast into the shaft.

 

I'll get pics today since I don't seem to be getting any answers!