Well Im a bit dissipointed I ran a 8.82 spinning off the line and it seemed to bog a little. My sixty foot was 1.98 and trap speed was 79.9. I started with about 19 psi in tires and then went to 12psi and still spun some and the car was way to fishy down the track meaning it didnt wanna go straight. I was shifting about 5700 rpm . I believe there is a 8.30 in the car easy if I can get my 60 foot into the 1.75 to 1.85 range. I dont understand why it hooked poorly with a 8.5 in slick , maybe I didnt warm it enough only trial and error will tell. Seems if I have to run 18psi to keep it straight it wont get enough traction.....