My father's '63 C60 (292 CID, 4-speed, 2-speed rear, Garwood dump, Heil single cylinder hydraulics) had a GVWR of 19,500 lbs. When I was in my late teens and working in his construction business I'd pull up to the scales at the quarry and leave with a total weight of around 31,000 lbs. Truck pulled it no problem and dumping was easy. The truck handled it perfectly...although in hindsight I wouldn't recommend such practices…
