Machine description: V8 Gasoline Engine, 6-Speed Manual Transmission, 7000 lb Front Axle, 16160 lb Rears, 23000 lb GVWR, 9.00-20, Spring Suspension, 150 in Wheelbase, PTO, 11 ft 1-Way Plow, 10 ft Long x 2 ft 8 in High Ste... more info about the 1974 GMC 6500.