My setup was 496 11:1 comp Canfield 315s with mild porting Solid roller 652/652 308 duration 3365 pounds with my fat butt 4.88s 28" tires and a 3800 stall with a TH400. Ran 6.90 at 99 mph in the 1/8 with a pityful 1.70 60 foot.Don't know if sorry short times were from low compression or too low of a stall( I think stall is too low).But pulled one front tire up about 8" and would carry it about 20 feet out.Car had more but never got to test much before season ended.Never cured traction problems 100 %.I would guess mid 6s