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We all know that manufacturers like to give their horsepower/torque numbers a little boost so I'm wondering if anybody has actually dynoed their 6.7? I would do mine but I'm a few hours from the closest dyno shop.
I have seen numerous dyno sheets for stock 6.7s. The results I have seen vary from 307 hp to 346 hp and from just over 600 lb/ft to upwards of 650 lb/ft. Those are rear wheel numbers so you would expect a 15-20% drivetrain loss vs. the rated flywheel numbers.
I personally witnessed the 346 hp run and can verify that it was done on a dyno that has proven to be very accurate over the years. The Mason-Dixon Turbo Diesel Club has held 2 dyno events a year at that shop for probably 8 years now. The one anamoly I can report on that truck is it was an early release as a beta tester with a pipeline company. The guy that drives the truck said it had been flashed recently but Ford never gave them any information on what they do to the truck. He's had the truck since December 2009 if I remember correctly.
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