Ford's release of the 2011 F-Series Super Duty torque and horsepower ratings plant the truck at the front of the pack, at least for now. In addition to claiming the lead in power, the Ford also claims its new truck leads in fuel economy, towing and payload.
The Power Stroke turbo diesel engine in the 2011 Super Duty is a 6.7-liter monster, posting a gigantic 735 ft-lb torque rating at 1,600 rpm. Horsepower is is rated 390 at 2,800 rpm. The engine will run on B20 biodiesel. The Ford designed and built the engine uses a compacted graphite iron engine block and aluminum cylinder heads. Its high pressure fuel system uses direct injection and delivers fuel at more than 29,000 psi.
Ford's new gasoline power plant for the Super Duty is a 6.2-liter V8, rated at 385 horsepower at 5,500 rpm and 405 ft-lb torque at 4,500 rpm. These numbers are using regular gasoline, the engine is E85 compatible. The single overhead cam engine features roller-rocker shafts for increased low-speed torque. The engine has a 102 millimeter large cylinder bore and uses two spark plugs per cylinder to increase efficiency.
Ford has bested the competition on towing and payload. Single rear-wheel F-250 and F-350 truck are rated up to 14,000 pounds towing capacity (using a conventional hitch), and 4,050 pounds and 4,500 pound payload capacity, respectively. Maximum towing capacity of the F-450 Super Duty is 24,400 lbs, while the F-350 dual-rear-wheel can haul a payload of 6,520 pounds. These numbers beat the ratings of 2011 Chevrolet Silverado Heavy Duty pickups, announced just last week.
EPA fuel efficiency ratings are not required on heavy duty trucks, and although Ford did not release the actual numbers, they claim a 18 percent improvement in fuel economy over the previous model.
Although Ford can claims top spot for horsepower and torque, its days may be limited. GM has yet to release final horsepower and torque figures for its 2011 6.6-liter Duramax V-8 diesel.