Cat 3126 6 Cylinder 7.2 L Diesel 142 hp Engine, 2000 US EPA Label, Eaton Fuller FS-6406A 6-Speed Manual Transmission, 12000 lb Front Axle, 21000 lb Rears, 33000 lb GVWR, 11R22.5, Double Frame, Spring Suspension, 149 in Wheelbase, 84 in Cab to Axle, 160 in Cab to End of Frame