http://BillBrandtFord.com 925-634-3551 Ford claims it had designed its engine to be relatively easy to upgrade when the time called for it, so for 2015, Ford bolted a larger turbo to the Power Stroke, bringing output to an insane 440 hp and 860 lb-ft of twist, all without reducing fuel efficiency. Maximum tow capacity rises from 24,700 lbs to an incredible 31,200 lbs for the F-450 dually.