[Dinsdale]

Well, I'm far far from being any kind of suspension expert but it seems like your rear springs may be part of the problem. As soon as you have a spring that is trying to control windup and a traction device such as a Cal Trac then you end up with a conflict of interest. I've seen low 10 second cars with just a slapper bar and there are the old Mopar S/S springs that worked well without any help.

All the spring needs to do in a race car is set the ride height. Then the traction device (I.E. Ladder Bar, Cal Trac etc.) along with shock adjustment is tuneable. That's why a coil over setup works as well as it does. My suggestion for the little it's worth is go to a Calvert Mono spring for your car or keep the current ones and ditch your slide a links and clamp the front half of the springs or try a cheap set of slapper bars if you get wheel hop.

The other thing mentioned is a stiff sidewall tire but they don't come in many sizes so you have to do some research on that deal. I run a Goodyear 29x11 and they quit working long before they are worn out because they are a regular sidewall.