Well, the quality of the materials is probably decent, but I would be more worried about the fact that the grind itself is pretty crappy.

You have an advertised duration of 282, and an 0.050 of only 224, which means that it has a bad ramp angle (slower valve action) and its basically bleeding off compression = loss of power.

My buddy ran one of these generic cams (PAW makes the same one) in his '79 350 Camaro a few years back when we didn't know any better, and it was really crappy, no torque.

Spend a little extra and get a "tighter" cam with less of a difference between the .050 and the advertised, which means it has a faster valve action - the valve gets to max lift faster, and closes faster; therefore there is no unneccesary loss of compression.

Comp Cams Xtreme energy makes 2 that would be better:

XE268H: 268/280, 224/230, .477"/.480" lift.
XE274H: 274/286, 230/236, .487"/.490" lift

I have first hand experience with the XE268, it makes really good torque and has a nice sound. Dies around 5700 rpm.