F350 Super Duty vs 3500 Denali vs The Ike Pulling 30k lbs

According to my math the Powerstroke's average crankshaft power output over the entire run would have been very close to 425 hp (assuming a 15% powertrain loss). Based on a torque curve with max torque of 1050 lb ft @1600 rpm and a peak horsepower of 475 @ 2800 rpm I expect the Powerstroke to make 425 HP at about 2400 rpm. So .... based on the math, it looks as though the Powerstroke wasn't holding anything back .... it put full fuel delivery out for the entire run up the hill.


Edit: I'm not sure where my mistake was but, 375 flywheel HP is more like what the Ford would have been generating .... not 425. The Duramax averaged more like 329 flywheel HP. (This assumes 15% driveline loss for both trucks and 75 hp to overcome air and rolling resistance for the Ford vs 67 HP for the GM.)