Gentlemen,
I have two camshafts one is a reground 1300 cam believed to be a mild cam for big bore engine.
The other is a std (although the history is unknown) cam from a 1600 tp.
The latter has a cam dimension of 38mm from top to bottom of lobe while the other (1300) has a dimension of 36.5 mm. I know cams are speced in duration and lift, however would it be safe to assume that the cam with the bigger lobe would be a "hotter"cam ?. Lobe width is also bigger. Is there any way of identifying a cam ?.:o

Ben's putting you on the right track; an unknown cam is about the worst thing you could do for your engine. You'd be better off building a completely stock engine and paying the extra to have a really good cam.

Examples: An Engle (we know they work,) one of the new Engle, Web-Cam or CB "asymetrical" cams, a cam recommended by Ben or Mick Motors, or a custom grind from C.O.M.E. Racing (yes, they do VW cams, too.)

The cams you have are not only unknown, they probably won't bed properly with your new lifters (and may already be "flat."