The Chevrolet Silverado HD — and its corporate twin in the GMC Sierra HD — can be had with either a standard 6.6-liter gasoline V8, or the optional 6.6-liter Duramax turbo-diesel. Opting for the TD ...
Chad Simper lives in Vernal, Utah, but shows up at dyno events and sled pulls all over the western half of the United States. His '05 Chevy 2500HD looks pretty normal until the hood lifts up. That's ...