Ford Motor Company has announced the release of their 2nd generation 6.7L Power Stroke turbodiesel for the 2015 model year. A variety of improvements give the updated Power Stroke 440 horsepower and 860 lb-ft of torque (previous model was rated at 400/800). The engine is scheduled to become available in the Spring of 2014, when the 2015 model year Super Duty pickups hit dealerships around the country.
Amongst the engine's changes, Ford engineers are retiring the GT32 single sequential turbocharger ("DualBoost") in favor of a larger Garrett GT37. The GT37 has a single, 88 mm compressor wheel, as opposed to the GT32's dual compressor wheel design. The larger turbo will provide the airflow necessary for the new Power Stroke to surpass the previous design.
Ford claims you can also expect enhanced exhaust brake performance from the larger turbocharger. The 2015 6.7L Power Stroke will also utilize a new fuel system, the heart of which will be a larger fuel injection pump and redesigned injectors. The engine's new injector nozzles will not only increase performance, but allow the engine to continue to meet emissions requirements in all 50 states.
To support the new performance levels, the engine and transmission have been treated to several changes of their own. An updated crankshaft design, polymer coated main bearings, and stronger piston assemblies will support the engine's additional power. Ford's 6R140 transmission will receive an upgraded torque converter design to manage the engine's new power ratings. Ford has produced over 500,000 6.7L Power Stroke diesels since launching the platform for the 2011 model year.
In the wake of Cummins release of the High Output 6.7L Cummins (up to 385 horsepower and 850 lb-ft of torque), Ford has livened up their Power Stroke to maintain its status in the highly competitive diesel pickup category. In other news, the F-450 is growing apart from the F-350 for 2015 - bigger brakes and a redesigned chassis will grant the behemoth a maximum 31,200 lbs 5th wheel towing capacity and a 40,000 lb GCWR.
For a list of comprehensive changes to the 6.7L Power Stroke for the 2015 model year, you may visit: 6.7L Power Stroke Changes
Source: Ford Motor Company, ford.com