Powertrain & Performance Engine: 7.3L Power Stroke V8 Turbo Diesel Horsepower: 235 hp @ 2,700 rpm Torque: 500 lb-ft @ 1,600 rpm Compression Ratio: 17.5:1Turbocharger: Garrett GTP38 (with wastegate) Oil Capacity: 15 quarts with filter Towing & Hauling Max Conventional Towing: 10,000 lbs (Limited by factory hitch). Max Fifth-Wheel Towing: 13,500 lbs. GVWR (Gross Vehicle Weight Rating): 8,800 lbs. GCWR (Gross Combined Weight Rating): 20,000 lbs Payload Capacity: 2,140 lbs (varies by specific options) Exterior Dimensions Wheelbase: 172.4 inches Overall Length: 262 inches Overall Width: 79.9 inches Bed Length (Floor): 98.1 inches (8-foot box) Fuel Tank Capacity: 38 gallons Chassis & Suspension Front Suspension: Twin I-Beam (4x2 models)Rear Axle: Sterling 10.5-inch Brakes: 4-wheel disc with 4-wheel ABS Tire Size (Factory): LT235/85R16 Pro-Tip: Since this is the 1999 "Early" model year, it features the factory intercooler and split-shot injectors, which make it significantly quieter and more efficient than the previous 1994–1997 versions.