...put a great big boat behind it.
60' long, 11'6" wide, 32K# all behind 6.6L LB7 and an Allison 1000 automatic. Boat was insurance salvage, engines/outdrives and radar arch were carried on the truck, making this haul possible on a stub axle, air-ride trailer with only four 3840#, 14ply lowboy tires under it. Trailer axles scaled at 14K#, truck axles at 18K#.