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
Bionic Man wrote:
It’s not all about speed up a hill (especially a hill that very few on this forum ever drive).
RAM needs to change transmission to improve driving dynamics and efficiency. And I’m not sure there is a formula or chart for you to create that will show that.
We know from the Cummins bsfc map peak efficiency is a small window from 1500 - 2000 rpm, and roughly 50% to 75% of peak torque output.
What I'll try is running the model with the engine restricted to 75% torque (say, 800 lb-ft), and forced upshift at 2100 rpm. I bet that's where the 10 spd shines.
To be fair, 43,500 lbs would be a bit much. I'll try 26,000 lbs, 8k truck and 18k toy hauler.
