Pinion Angle?

So they are fairly stiff (because they aren't worn out) How hard do you launch? Street car, street strip car, strip car? Just wondering if 1-2° is enough. It should be for general purpose stuff. But if you are side stepping the clutch at 6,000 r's or have a auto with a trans brake 2° might be ok as long as you have some kind of traction control. I am curious as to the racing suspension books recommend? (if you have a race car)

It is a street car with a built up 340, probably around 375 or 400 hp. I put a sure grip 3:55 in it and tried some burnouts. It is a 4 speed. It hopped so much that my z-bar began scraping against my headers.