Unported head quickness?

1969 Sport Satellite. Rebuilt 1973 440 - 10:1 cast pistons - stock cast crank bottom end. MP 280/474 cam and matching springs. Stock 906 heads. Holly street dominator with 3310 750 carb. Hooker competition headers. 727 trans with factory hi-stall(2600 stall). 3:23 sure grip with 255/60/15 BFG's. Car ran 13.20 with no traction whatsoever in first gear. Had to baby it out of the hole. I think it would have ran a mid to high 12 with proper traction. Don't remember the MPH(long time ago)