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. ...
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Almost every turbodiesel shared between pickup trucks and medium-duty trucks gets de-tuned to a sustainable output for the MDT application, and rated for 100% duty cycle.
Ford and Freightliner were doing the same when using Cummins and Cat engines in their MDTs. Ratings were even below the engine offerings for bare motorhome chassis, which is considered light-duty compared to medium duty truck applications.
Pickups get something more like a "peak horsepower" rating usable for short bursts of power, with the computer watching things and cutting back to sustainable outputs when necessary to save the engine. Those ratings are for marketing, there is a horsepower race in the pickup sales business, like those 400-425 horsepower V8s in 1960's muscle cars. Dragstrip horsepower.
Ford and Freightliner were doing the same when using Cummins and Cat engines in their MDTs. Ratings were even below the engine offerings for bare motorhome chassis, which is considered light-duty compared to medium duty truck applications.
Pickups get something more like a "peak horsepower" rating usable for short bursts of power, with the computer watching things and cutting back to sustainable outputs when necessary to save the engine. Those ratings are for marketing, there is a horsepower race in the pickup sales business, like those 400-425 horsepower V8s in 1960's muscle cars. Dragstrip horsepower.
