Detroit Diesel Series 60 6 Cylinder 11.1 L Diesel 330 hp Engine, 1999 US EPA Label, Air Conditioner, Eaton Fuller RTX-13709H 9-Speed Manual Transmission, 12000 lb Front Axle, 20000 lb Rears, Dana Drive Axles, 4.11:1 Axle Ratio, 32000 lb GVWR, Air Ride Cab, 295/75R22.5, Air Ride Suspension, 156 in Wheelbase, Elevating Fifth Wheel