• The Silverado SS has 345 horsepower and 380 foot-pounds of torque for heavy towing.camping,trailer image by Greg Pickens from Fotolia.com
  
  The 2003 Chevrolet Silverado SS is an all-wheel-drive, fully rear-locking-differential version of the old 454SS, but with more horsepower and less torque than the older version. The Silverado SS is a four-door extended-cab pickup that seats six and features driver and passenger airbags.
  
  

Engine And Transmission

• The Silverado SS has a six-liter Vortec V8 pushrod engine with 380 foot-pounds of torque at 4,00 revolutions per minute (rpm). The truck has 345 horsepower at 5,200 rpm. The fuel system is sequential fuel injection, and the pickup does 13 miles per gallon (mpg) in the city and 17 mpg on the highway.
  
  The 2003 Silverado SS has a four-speed, electronically controlled automatic transmission with overdrive and the transmission is cooled by an external oil cooler.
  
  

Suspension and Brakes

• The Silverado SS has an independent front axle and torsion bar front suspension with a front shock absorber diameter of 32mm. The spring and axle capacity of the front of the truck is 3,925 pounds. The rear of the truck has a a semi-floating rear axle, and the suspension is multi-leaf type with a 32mm diameter shock absorber. The spring and axle capacity of the rear of the truck is 3,750 pounds. The pickup has power steering and a turning diameter of 37.4 feet.
  
  The brakes are discs, front and rear, with the front brakes having a diameter and thickness of 12 and 1.1 inches and the rear brakes a diameter and thickness of 13 and 1.2 inches. The Silverado SS has a four-wheel Anti-lock Braking System.
  
  

Dimensions

• The Silverado SS has front tires of P275/55R20 size and rear tires of P275/55R20 size. The wheels are aluminum and have a diameter and thickness of 20 and 8.5 inches.
  
  The pickup is 227.7 inches long, 73.9 inches high and 78.5 inches wide. The wheelbase is 143.5 inches, and the truck has a ground clearance of 8.3 inches. The cargo box is 68.7 inches long, 64.8 inches wide and 19.5 inches high. The cargo box holds 113.6 cubic feet of space.
  
  Inside, the pickup has headroom of 41 inches, hip room of 61.4 inches, legroom of 41.3 and shoulder room of 65.2 inches in the front of the cab. In the rear of the cab, there is 38.4 inches of headroom, 66.3 inches of shoulder room, 61.5 inches of hip room and 33.7 inches of legroom.