GM V8 4.8 L Gasoline Engine, 2005 US EPA Label, Automatic Transmission, 4,400 lb. Front Axle, 7,900 lb. Rears, 10,000 lb. GVWR, steel, 225/70R19.5 Front Tires, 225/70R19.5 Rear Tires, Spring Suspension, 180 in. Wheelbase, Union City Body Co. 18 ft. Long x 96 in. Wide x 84 in. High Body