Machine description: Cat C7 Acert 6 Cylinder 7.2 L Diesel Engine, Allison Automatic Transmission, 10000 lb Front Axle, 19000 lb Rears, 5.57:1 Axle Ratio, 25950 lb GVWR, 11R22.5, Spring Suspension, 188 in Wheelbase, 120 in... more info about the 2004 Chevrolet C7500.