Photo gallery: Kenworth T880 vocational off-road test drive Recently, Kenworth Trucks took over the DirtFish Rally School to push a lineup of T880 trucks to their limits. Rugged and ready for mud, the lineup included: A burly T880S (Blue) set-forward axle, dump body configuration powered by a 2017 PACCAR MX-13 engine with 510 HP and 1,850 lb.-ft. Another T880 (Yellow) dump truck powered by a 2017 PACCAR MX-13 engine with a more typical 485 HP and 1,650 lb.-ft., which sat next to a T880 dump truck (Red) powered by a 2017 PACCAR MX-11 engine, sporting 430 HP and 1,650 lb.-ft. A T880S set-forward axle mixer (Yellow) flex at 2017 PACCAR MX-11 engine with 430 HP and 1,650 lb.-ft. And the most unique of the bunch—a natural gas-powered T880S set-forward axle mixer (White) with 320 HP and 1,000 lb.-ft. While we head to the editing room to pull together the test drive video, get your hands dirty with this dust-touched photo gallery. Ready to roll. Kurt Swihart, Marketing Director, Kenworth Trucks, provides background on the DirtFish Rally School and elaborates on the importance of the T880 in the Kenworth lineup Natural gas is still seeing strong interest in niche markets, according to Kenworth. DirtFish is just down the road from Snoqualmie Falls, a 268-ft waterfall that has been featured in the TV Show Twin Peaks, along with the lodge at its summit. I hear it’s a clean place, reasonably priced.