Took the car out to Lapeer yesterday for some T&T. It ran good, a best of 12.35 @ 113.32 and that was with a 2.0 60ft. Good MPH for this combo,I need to work on traction first then fine tune.

The Car: 73 Challenger 416 stoker 10.5 cr. Comp hydraulic 250* with .525 lift M1 single plane w/holley vac secondary 750 Hooker SC 1 3/4" thru 2 1/2 pipes to dynomax super turbos exiting at the axle. 727 with a 3500 stall 10" convertor to 4.30 gears on BFG 275/60x15 drag radial @18psi.

I have the rear springs clamped but I'm thinking Super stock springs and a Pinion snub should be the next step.
the car weighs in at 3780 with me in it(yea I know get out and lighten the car 200lbs). I have a set of e-body SS springs rate for 3300lbs. do you guys think these would be worth a shot or should I sell them and pick-up Higher rated springs(3600 or 3800)?

thanks