Machine description: Cummins M11 6 Cylinder 10.8 L Diesel 350 hp Engine, 1996 US EPA Label, Engine Brake, Eaton Fuller 10-Speed Manual Transmission, 12000 lb Front Axle, 38000 lb Rears, 50000 lb GVWR, 11R22.5, Air Ride Su... more info about the 1994 Peterbilt 378.