* 4.8L Vortec V8: This engine produces 285 horsepower and 325 lb-ft of torque.
* 6.0L Vortec V8: This engine generates 325 horsepower and 360 lb-ft of torque.
It is important to note that the specific engine in a 2005 Express Cargo will depend on the trim level, model year, and individual vehicle specifications. You can find the engine size for a specific vehicle by checking the VIN number or by contacting a Chevrolet dealership.