2021 Cummins 1075 lbft peak torque at 1356 rpm
Apparently the 2021 Cummins makes its peak torque of 1075 lbft at 1356 rpm. Are you still impressed?
Forum Discussion
4x4ord wrote:
Towing 63 mph I’m at 1750 in 5th and putting out 600 Nm (110 Kw) or 1432 in 6th putting out 733 Nm (110 Kw) and getting the 9 mpg.
70 mph empty we are both at 1594 in 6th getting 18 mpg putting out 333 Nm. (55 Kw)
Pulling a 7% grade I’m able to do 45 mph at 2170 rpm putting out 1277 Nm (290 Kw) and according to the bsfc map I should be using 205 g/kwhr which would put me at 2.44 mpg and again you’re not going to do any better.
We're probably splitting hairs, as this is all theoretical. Using 388 hp as the target, 10 spd:
6 spd:
Both are pretty much 100% throttle.
What's more interesting is if the grade gets steeper, the 10 spd can drop TWO gears, down to 4th, and still maintain 45 mph. It might lose 1 mph in order to bring the rpm from 2892 down to 2800, where it develops the full 430 hp.
But the Aisin would be forced to 2nd and slow down to 38.6 mph
