Dearborn, Michigan – Ford has announced that its 2011 F-Series with 6.7-litre Power Stroke V8 diesel is now rated at a best-in-class 800 lb-ft of torque, an increase of 65 lb-ft. There is also an increase of ten horsepower, to 400 hp. Current owners can get the increased performance through a free, dealer-installed software upgrade to the truck’s powertrain module.

Ford will begin production of the engine this week, which it said is the most powerful diesel ever installed in a heavy-duty pickup. The 6.7-litre Power Stroke was introduced in April.

Ford will send letters to current owners of 2011 models, explaining the procedure and inviting them to visit a dealership for the upgrade. The upgrade program will begin by August 31, and will include all diesel-powered trucks in dealer inventory.

The company said that a rigorous testing protocol, including computer, laboratory and on-road validation, ensured 400,000-km durability of the new engine’s components and systems, opening the door for the increased capability.

The upgrade is expected to improve fuel economy by at least two per cent, as the increased power will allow the truck to get to a higher gear faster and stay in it longer.

Going forward, the F-350 dual-rear-wheel model will add vehicle upgrades to bring its maximum payload to 3,207 kg (7,070 lbs) and its maximum fifth-wheel towing to 10,251 kg (22,600 lbs).

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