2011 Ford F-250 Super Duty King Ranch Crew Cab 4x4 Diesel - Car and Driver
That’s how we’ve arrived at trucks with four-ton curb weights, three-ton payload capacities, and 12-ton towing capabilities. Dearborn’s newest piece of artillery in this battle is the all-new, Ford-designed and -built, 6. 7-liter Power Stroke diesel V-8, available in the redesigned 2011 F-series Super Duty lineup. On a diesel kick since welcoming a Ram 2500 diesel into our long-term fleet, we were eager to see how the Power Stroke would stack up. The New Power Stroke. After Ford’s relationship with Navistar—its previous diesel-engine supplier—went south, the blue-oval team brought the task of designing, engineering, and building the Power Stroke in-house. Air now enters the engine on the outsides of the heads, and the exhaust manifolds are in the engine valley, joined by a single turbocharger. The end result of the new tech was 390 hp and an asphalt-destroying 735 lb-ft of torque, but then the 2011 Chevy Silverado and GMC Sierra debuted with a new Duramax diesel that trumped the Ford with 397 hp and 765 lb-ft. Not one to lose a pissing match, Ford squeezed out another 10 hp and 65 lb-ft with a simple engine-computer reflash, for respective totals of 400 and 800. We first tested the 2011 Super Duty prior to the reflash, setting an F-250 loose on the test... Source: www.caranddriver.com
