Cummins C8.3-275 6 Cylinder 8.3 L Diesel 275 hp Engine, Eaton Fuller Manual Transmission, Differential Lock, 14400 lb Front Axle, 40000 lb Rears, 50000 lb GVWR, 12R22.5 Front Tires, 11R22.5 Rear Tires, Hendrickson RT/RTE Series Spring over Walking Beam Suspension, 237 in Wheelbase, PTO, 34000 lb Capacity, Center Mounted, 27 ft - 71 ft 4 Section Boom, Johnson 1 Sheave Hook Block, Anti-Two Block, Dual Controls, A-Outriggers, Rear Outriggers, 20 ft x 96 in Bed