Ford’s second-generation 6.7-liter Power Stroke® V8 turbo diesel now boasts 440 horsepower, up from 400 horsepower, and 860 lb.-ft. of torque, up from 800 lb.-ft, across all Super Duty models from F-250 to F-450.
The 2015 F-450 tops the F-Series Super Duty pickup truck lineup with maximum towing capacity increasing to a class-leading 31,200 pounds. F-350 increases maximum towing capacity as well, to 26,500 pounds.
The improved ratings are a result of designing and engineering the truck as an integrated system. The approach enabled Ford engineers to optimize performance across the full Super Duty lineup.
“Our chassis people work in unison with our powertrain people to develop more than a great truck, it’s a machine engineered for work,” said Doug Scott, Ford Truck group marketing manager. “We’re the only manufacturer that develops and builds our own powertrains in this class and when you combine that with a chassis that’s purpose-built for best-in-class power and torque, you can feel the result in the way it drives, especially when towing big loads.”
“Our chassis people have worked in unison with our powertrain people to develop more than a great truck – it’s a machine engineered for work,” he adds.
Power Stroke Engine Improvements
The 2015 Super Duty achieves best-in-class towing performance with a second-generation 6.7-liter Power Stroke V8 turbo diesel engine that was further developed to provide more power, torque and efficiency.
“The 6.7-liter Power Stroke was already a stout engine,” said Robert Fascetti, Ford vice president powertrain engineering. “The improvements we’ve made essentially give Super Duty customers an engine designed for our larger F-650 and F-750 trucks. They may not realize how tough this engine really is.”
The engine enhancements give the Power Stroke engine a class-leading maximum output of 440 horsepower and 860 lb.-ft. of torque.
The F-350 is available with a high-capacity towing package that includes new front springs and a wide track axle, increasing the gross combined weight rating with the 6.7-liter Power Stroke engine from 31,900 pounds to 35,000 pounds.
Improvements to the F-450 that allow it to handle the increased tow rating include commercial- grade 19.5-inch wheels and tires; upgraded rear U-joints and suspension components, including new rear leaf springs; front and rear stabilizer bars; and shocks. The steering system has stronger gears and linkages and the fifth-wheel/gooseneck has an increased towing capacity. The brakes are larger brakes and feature new antilock brake calibration for enhanced braking performance.