Our Picks for the Best Diesel Pickup Truck Engines of the Last Two Decades. MotorTrend Staff Writer Jul 09, 2015. See All 10 Photos.

The next upgrade of the 6.7-liter Cummins diesel engine came in 2018. Horsepower output stayed level at 385, but maximum torque for the high-output version jumped from 865 to 930 pound-feet.

This week, diesel truck engine company Cummins made an unusual announcement. In addition to several new high-efficiency diesel engines, it also showed off an all-electric truck called the Concept ...