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Mercury C557
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We were already impressed that the optional 6.7-liter Power Stroke turbo-diesel V-8 engine in 2011 Ford Super Duty trucks churned out 390 hp and 735 lb-ft of torque, and now Ford has extracted even more grunt from the engine. Reprogrammed engine-management software means the engine now produces 400 hp and an incredible 800 lb-ft of [...]Related posts:
  1. New 6.7-liter Power Stroke Diesel to Debut in 2011 Ford Super Duty Trucks
  2. GM Heavy Duty Diesel Power and Torque Figures Announced, One-Upping Ford
  3. 2011 Ford F-250 Super Duty King Ranch Crew Cab 4×4 Diesel – Short Take Road Test

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