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
Grit dog wrote:4x4ord wrote:RoyJ wrote:
Referring back to those BSFC maps I posted, if we want the absolute best mpg, then there's only a small windows (dark blue), between 1500 and 1950 rpm, and 55% to 90% torque output.
That's where a 10 spd would be beautiful.
Roy I think the 3.31 rear end and 5th gear with the Aisin would be hard to beat when towing heavy and when towing light or running empty 6th with 3.31 gears is tough to beat. To bad they did away with 3.31 gears.
4x, this sounds just like a Kaytegism.
IE: It makes no sense. If what you said is true, you’re suggesting the mfg of said vehicle is completely back asswards in their axle offerings. Well, them and every other person who knows generally deeper gears pull better and offer greater fuel efficiency when towing heavy.
You’re right 4.10 would offer more ratio selections for pulling grades but with 1075 lbft of torque I don’t need more than 3rd and 4th for most hills with 3.31 rear gears. 5th is about perfect for heavy towing on level ground which leaves 6th for light towing and running empty. I don’t understand why Ram dropped the 3.31 rear end especially now with more torque.
