Our latest comparison is under way, and it's brutal. Once again, we've teamed up with our friends at Diesel Power to test three heavy-duty dual-rear-wheel pickup trucks towing gooseneck trailers weighing almost 19,000 pounds, from the Rocky Mountains to Laughlin, Nev., and back. It's a journey of almost 2,000 miles with temperatures expected to top 105 degrees and elevations ranging from 500 feet above sea level to 11,000 feet.
We simply call it the Heavy-Duty Hurt Locker.
The HD pickups we're testing are the 2011 Ford F-350 Super Duty with the 6.7-liter Power Stroke V-8, 2012 GMC Sierra 3500 with the 6.6-liter Duramax V-8 and the updated 2011 Ram 3500 with the new 6.7-liter High Output Cummins inline-six-cylinder and optional Max Tow package.
Which one-ton dually will come out on top? The 400-horsepower, 800 pounds-feet of torque Super Duty? The 397-hp, 765 pounds-feet Sierra 3500, twin to the Chevy Silverado 3500 that won our Rumble in the Rockies? Or the toughened 350-hp, 800 pounds-feet Ram with the Cummins dynamo under its hood?