I went 9.80's on superstock springs with mid1.3 60 foots and the car hook anywhere, and would go on the bumper if I wanted it to.
I agree with previous poster the front end is a big factor as well.
I have read more threads on here over the years about how to get a car to work with cal tracks than anything else.
The s/s springs were well engineered from Mopar, they work.
Current owner of my car runs 9.60's at 140 with it now, still 28 by 10 tire.
They will certainly work on an 11 sec car.