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.)

This test seemed a lot more haphazard than what they have done in the past, particularily on the down hill portion. There is no question the Ford dominated the run up the hill. Looks like in this case the Ford actually performed like you would expect given its power advantage. GM clearly is going to have to find some more power to compete with the Ford 6.7 on this test.

The driver's commments on the clutches on the CAT made me laugh. He clearly has no idea what he is talking about.

Cummins12V98 wrote:
Will be nice to see how the measly 400/1000 with 4.10's RAM does with it's ancient outdated 6 speed AISIN.

Very easy to have ZERO brake applications if one chooses running cruise control.

The new Ram has already run up against the Duramax 10 speed towing 16000 lbs. The Ram and GM had identical times of 8:24.


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Will be nice to see how the measly 400/1000 with 4.10's RAM does with it's ancient outdated 6 speed AISIN.

Very easy to have ZERO brake applications if one chooses running cruise control.

They showed the GM at a point and mentioned it was doing 45 mph but the tach was at 2500 rpm. With all those gears there should have been a gear to put it in the 3500-4000 rpm range. Same for when they tested the 6.6 GM gas. I know,if floored either of those GM trucks would have down shifted another gear.
Clowns

SidecarFlip wrote:
Those clowns need a real job.

??? :h :S

Thanks for sharing, Fish. The new Ford is certainly impressive!

That is pretty impressive for the Ford running 3.55 gearing. The 10 speed seems to be doing its job.

Don't understand why you would start downhill with 30K behind you and not have exhaust brake on.

Those clowns need a real job.