Its got enough for 11's. My old combo was a stock stroke 440 with 906 heads , the MP .557 cam , Street Dominator intake , 850 DP , 1-3/4" headers , 4.30's and 30" tires with a Dynamic 9.5 converter flashing about 4200. At 3700 lbs it ran a best of 11.49 @ 116. I think you will have a stronger eng then that was but your Charger might weigh a bit more then my 63 but not much more. Ron