I'm not sure using the Ike Gauntlet to compare Non-Turbo and Turbo Trucks is fair because the extreme altitude favors the TurboCharged engines. But, here it is....
Data: TFLtruck - Ike Gauntlet Results in One Place - Truck News, Views and Real World Reviews
Ike Gauntlet 2.0 (Eisenhower Tunnel, Colorado)
The 8,000 lbs load from the original test was not slowing these trucks down enough, so Ike Gauntlet 2.0 raised the ante to 10,800 lbs. MPG is measured only on the way up as provided by the factory computer.
Year Make Model Up (sec) Up (MPG) Load (lbs)
2013 Ford F-150 Crew 4×4 EcoBoost 7:36 2.9 10,800
2014 Chevrolet Silverado Crew 4×4 6.2L 8:26 3.4 10,800
2014 Nissan Titan KingCab PRO-4X 9:08 2.8 10,800