F550 Chassis Super C power ratings
The new 6.7L diesel motor that Ford offers for the F250 - F550 has HP and torque ratings of 400hp and 800 ft lbs. The Four Winds brochure lists the motor as 300hp and 660 ft lbs, significantly lower. ...
Forum Discussion
Also Ford is quick to cancel your warranty on your diesel if you re-program it for more power. Pretty risky since it's $12-20,000 when the fuel pump goes out on the 6.7L. Plenty of information on both topics on the Ford diesel forums, and also good info on the fuel pump in the Tow Vehicles section.
