Are the HP wars over?
So I haven't been keeping up on the HP wars for years. So I had a little time today and was checking out the 2022 HP wars of the big 3 and was shocked at what I saw. Ford not only was on top but d...
Forum Discussion
valhalla360 wrote:4x4ord wrote:
400 HP is a little bit skimpy for larger RV's. You need over 500 HP to pull a large RV (20,000 lb fiver) up a 6% grade at 65 mph. I haven't been in the mountains with my 2021 Ford but my 2017 with 440 HP pulled down to about 50 mph on some hills with a 17k lb trailer in tow.
Probably more of a gearing issue. If it can't get the right combination of RPM and torque, it won't reach max HP.
Very rarely does any engine hit it's peak HP rating in terms of real output.
But still doesn't conflict with the statement that 95% of the time, you can pick your speed. Also you are probably flying by the trucks in the right lane at 50mph.
Gearing isn’t so much an issue anymore but the Powerstroke would actually stand to gain more with additional gears than the Ram. The new Powerstroke with the 10 speed has a bit of a jump going from 7th to 6th, so, it will pull down to about 2050 rpm before dropping into 6th. At 2050 it is making about 395 hp. So the Powerstroke runs between 395 and 475 hp.
The Cummins only has 6 gears but because it has such a large torque rise it does just fine with the 6 gears it has. The Cummins/ Aisin can drop to 3rd gear at 2100 rpm bringing the engine up to just over 2800 rpm. At 2100 rpm the Cummins is able to produce 395 hp. So with only 6 gears it can operate in the narrow power window of 395 to 420 hp.
Edit: This is assuming the Cummins makes its 420 peak hp at 2800 and 1075 peak torque at 1800 and the Powerstroke making its peak 475 HP at 2600 and 1050 peak torque at 1600 rpm.
