* 6.0L Vortec V8: This engine produced 360 horsepower and 380 lb-ft of torque.
* 6.6L Duramax Turbo-Diesel V8: This engine was the more powerful option, producing 397 horsepower and 765 lb-ft of torque.
It's important to note that the specific engine available in a 2013 Silverado 3500HD would depend on the trim level and configuration of the vehicle.