If they don't give out the spec's, why would anyone buy it? That worked for the Beatles with the white album, but if I'm gonna fork over about 4 bills, I'm going to at least want to know what I'm buying. I'm not a cam expert, but do have a pretty good idea of how duration and overlap are going to make an engine of a specific displacement perform. There are lots of really good choices out there, that are proven, and your going to want a cam similar to them. Its hard to go wrong with the LJMS stage 2 turbo cam, BTR turbo cams, etc, or even just a 224, or 228ish type cam on a 112-114 with a couple degrees of advance in them. The biggest difference you will have is between the factory truck cam, that comes in a large number of the donor engines we deal with, and just about any aftermarket cam 224 and bigger. It's like the first rule of a gun fight, have a gun. Same thing with camshafts. Compared to that jump, the differenced between most of these moderate cams is small. Just to reiterate my original thought, with so many vendors offering really proven grinds, why take a chance on some unknown grind, with just a flashy name to market it.