To keep the line running at its Avon Lake, Ohio, plant, Ford is ending its collaboration with Navistar in building the F-650 and F-750 in Mexico and transitioning production to the former E-Series van plant. The big trucks got a styling makeover to increase their familiarity with the smaller Super Duty models and in addition to the new design, got new powerplants, dropping the familiar and popular Cummins ISB 6.7L I-6 in favor of Ford's in-house 6.7L Power Stroke V-8 diesel. When the initial release came out announcing the 2016 F-650 and F-750, we didn't have horsepower figures for the Class 6 and 7 trucks, but now we do.
The 6.7 Power Stroke is offered in three power levels for different economy and capability needs. Ford is claiming a best-in-class standard horsepower and torque rating of 270 hp and 675 lb-ft for the first power stage, with a 300 hp and 700 lb-ft intermediate rating, and a top power rating of 330 hp and 725 lb-ft of torque.
Although those numbers may pale next to the 440 hp and 860 lb-ft rating for the 2015 Super Duty models, durability and operational economy take precedence in the commercial market. For comparison, the F-650's rival and former platform-mate, International Durastar, has a 6.4L V-8 with an entry-level power output of 220 hp and 560 lb-ft. Ironically, a version of this engine was also used in the Ford Super Duty until the ‘11 model year, following the debut of the 6.7L "Scorpion" Power Stroke.