[Ed Wright]

I have never had a bias tire hook as well as a radial on any track. I've heard thAt repeated, but it has not been my, or any of the guys I race with's experience. I was away from this for a while when I went dirt circle track racing for about ten years. Our local track prep is a bit hit. & miss (more miss than hit)
I started out running bias tires because that is what I knew when I quit to go roundly-round. Pete Peery put me onto the radials. I ordered another set of wheels, and some same brand, same size radials. Easy 2/10 quicker in A-B-A testing, and the bias tires were hooking just fine that night. Tested that a couple more times when the track prep was not so good. I have never found conditions my radials failed to hook at least as well, or better on slick tracks. They have been at least as consistent also. As far as I can see, only most stick cars like bias tires better. Of course, they don't want stick cars dead hooking. Even Pro Stock cars like to turn them over a revolution or so on launch.
Things I would look at are: Softer rear springs (just enough spring to hold the car up with coils) soft front springs (I would use no more than 275lb front springs on a Camaro. Also taller rear tires make more difference than wider. Loosen up the front end. If you knock your ball joints loose, then raise a control arm (not connected to the spindle) and it doesn't drop on it's own, it's too tight.
How to do some of this would take up too much room here. PM me if you don't know how to do some of this.
Hope this helped.