2021 Cummins 1075 lbft peak torque at 1356 rpm

MikeRP wrote:
Well heck yeah, are you? I think Cummins can play hopscotch with Ford on this platform till around 1250 ft-lbs or maybe even 1300 ft-lbs of torque. They probably can go higher w a different tranny.

I'm disappointed to hear that the 1075 torque rating is at such a low rpm. Here's why: When the 400 HP @ 2800 rpm and 1000 lbft @ 1800 rpm Cummins came out it had a power curve designed to pull and the numbers were meaningful. If you think of the 2019 Ram coming to a hill and you put your foot into it the transmission drops a couple of gears the engine rpm jumps to 2800 rpm and you've got 400 horsepower and 750 lbft of torque at the flywheel. As the hill starts to get steeper the engine pulls down and for every 100 rpm that is lost the crankshaft torque rises about 25 lbft so that by the time the engine slows to 2100 rpm it is still making 370 HP (and about 925 lbft of torque). At 2100 engine rpm the transmission can downshift to third and the power jumps back up to 400 horses. So, the Cummins engine doesn't really have much need for any more than a 6 speed transmission to make very good use of its power. For 2021, the 1075 lbft at 1356 rpm is strictly a rating to gain bragging rights and has absolutely nothing to do with how the engine will perform. In my opinion it is a number that Ram talked Cummins into giving them to gain bragging rights. It ends up being meaningless because it is so far outside of the operating rpm of the engine. It tells us that at 1356 rpm the engine is only capable of 277 HP. More than likely the torque curve of the 2021 is almost identical to that of the outgoing engine at the lower rpm of the engine's operating range. The big news really is that the CP3 pump is back for 2021. The fact that the power rating is up to 430 HP for 2021 is of some significance I guess.