Machine description: 6 Cylinder Diesel Engine, Eaton Fuller RTO11613 Manual Transmission, 9072 kg Front Axle, 20866 kg Rears, 4.11:1 Axle Ratio, 29938 kg GVWR, 425/65R22.5 Front Tires, 11R22.5 Rear Tires, Double Frame, He... more info about the 1990 Kenworth T450.