According to the '54 SHOP MANUAL, torque for lug nuts should be 50-60 ft lbs on 1/2, 3/4, and 1 ton; 250-275 ft lbs for 1 1/2 and 2 ton using a self-locking nut that requires this high torque. Don't know if the other shop manuals are close to the same as the '54 but it's on pg 10-9 under fig 21.
S2
