* 6.0L Vortec V8: This was the standard engine, producing 360 horsepower and 380 lb-ft of torque.
* 6.6L Duramax V8 Turbo Diesel: This was an optional upgrade, generating 397 horsepower and 765 lb-ft of torque.
* 6.6L Duramax V8 Turbo Diesel (with Allison 1000 transmission): This was the most powerful option, offering 445 horsepower and 893 lb-ft of torque.
So, depending on the specific trim level and options you're interested in, the 2014 Silverado 2500HD could have a 6.0L, a 6.6L Duramax, or a 6.6L Duramax with a more powerful transmission.
