Why would they de-tune the gasser especially when the Super Duties are heavier than the Rapter?
Let's put these powerful numbers in perspective.
For the gassers, the outgoing 2010 Super Duty's standard 5.4-liter gas V-8 is rated at 300 hp and 365 pounds-feet, and the optional 6.8-liter V-10 is rated at 362 hp and 457 pounds-feet. So the new 6.2-liter V-8 has more horsepower than either of the old engines and just misses splitting the difference in torque between the 5.4-liter and 6.8-liter, with two fewer cylinders than the massive 6.8-liter.
We can also compare the 6.2-liter V-8 in the Super Duty against its application in the 2010 Ford F-150 SVT Raptor. The 6.2-liter V-8 in the Raptor
is rated at a larger 411 hp and 434 pounds-feet.
The power numbers are larger in the light-duty pickup for two reasons, according to Chris Brewer, Super Duty chief engineer.
"The main reason is that when the truck goes over 8,500 pounds [gross vehicle weight rating], the SAE [horsepower and torque] rating method changes," Brewer said. "We can't get the same horsepower and torque out of it [like we can in the F-150].”
The 6.2-liter V-8 in the Super Duty also uses a different camshaft from the light-duty version, which, some may recall, is the same approach Ford uses
to make 500 hp in the FR Raptor XT version of the 6.2-liter V-8.