Think of it in terms of slowing the motion of the rear housing. I am on my fourth set of shocks in back, ending up with Afco BigGun shocks which are able to handle 926 hp, a 11.17 SLR, a 30 inch ladderbar and 10.5x33 Hoosiers plus transbrake.
To see how brutal things can get, hear is the math; engine torque x 2 (converter)1500 x SLR (low gear x rear gear) 11.17= 16,600 ft lbs at the hit trying to swing the rear housing down. With a 30 inch ladderbar (2.5 feet)= about 6500 lbs of torque is what those shocks have to control to slow down the housing at the hit.
