How much power does a 2019 CTD make at the wheels?

[ShinerBock]

Lavon Miller(yes, the same Lavon Miller who posted a 7.88 1/4 mile at last years UCC in his Cummins) at Firepunk diesel just recently purchased a 2019 Ram 3500 with the high output 400 hp / 1,000 lb-ft Cummins, and put it on his dyno to see how much of that gets to the wheel. Although I recommend watching the whole video, fast forward to 4:35 if you want to see the start of the 2019 truck and to 8:52 of the video if you want to miss all the shenanigans and just want to see the power numbers.

2019 RAM DYNO RESULTS - FIRST GEN PROJECT AND MORE

Enjoy!


PS - For most vehicles, there is a 10-15% difference between flywheel and wheel end numbers due to parasitic drivetrain loss. If it is less than that, then the manufacturer is probably being conservative(sandbagging) on their advertised stock power numbers.

[4x4ord]

I find it interesting that the peak rear wheel torque is 10% off rated peak torque yet the rated peak hp is only 2% above rear wheel peak hp.

[4x4ord]

Rating engines at the crankshaft seems kind of meaningless. It cant be confirmed. Rear wheel horsepower would make much more sense.

[Cummins12V98]

ShinerBock wrote:

Cummins12V98 wrote:
The Cummins puts a BIG percentage of advertised HP to the ground.

I was in LasVegas recently, a 2018 2500 370HP advertised did 352 on the Dyno. So the number of 392 out of 400HP advertised does not surprise me.

That has not always been my experience. Most have been 40-60 hp less. Heck, Lavon even stated at 3:42 of the video that his stock 2016 advertised at 385 hp put down 342 hp on that very same dyno. That is about an 11% decrease which is right inline with the 10-15% decrease that most vehicles have. Most other 370-385 stock horsepower Cummins have always been around 330-345 hp at the wheels from what I have seen.

With a 10-15% decrease and putting 392 hp to the wheels, that truck should be making between 435-460 hp at the flywheel. So either Cummins/Ram is purposely sand bagging or his dyno is out of whack. Given that his 2016 power numbers were in line with most other Cummins I have seen, my guess is leaning towards Cummins/Ram sandbagging.

Every Dyno event I have seen or been to the Cummins makes a larger percentage of advertised HP. The number I quoted was a bit higher than I have seen but he did his run right along with a bunch of other Cummins engines from many different stock HP levels.

In 2012 my 350 HP did 304 that's only a 17% drop. The 2012 Ford from BD same day same Dyno did much larger percentage of loss.

[ShinerBock]

One thing that might have made a difference there is the fact that the Cummins power numbers are up to 10k ft above sea level. This has a lot to do with the turbo calibration, but it makes restrictive at lower altitudes capping power output.

I am not sure what altitude the Powerstroke or Duramax are rated up to and may loose power as you go up. Although this would not matter to much on a wide open run from a dead stop because the Aisin shifts so **** slow that the Duramax would be long gone by the time the it finally gets up to speed.

[ShinerBock]

One thing that might have made a difference there is the fact that the Cummins power numbers are up to 10k ft above sea level. This has a lot to do with the turbo calibration, but it makes restrictive at lower altitudes capping power output. I am not sure what altitude the Powerstroke or Duramax are rated up to and may loose power as you go up. Although this would not matter to much on a wide open run from a dead stop because the Aisin shifts so **** slow that the Duramax would be long gone by the time the it finally gets up to speed.

[boshog]

Did you guys ever watch the 2017 dyno shoot-out by TFL? RAM/Cummins was number one there, GM's dyno numbers were shocking, Ford's disappointing.

https://www.youtube.com/watch?v=emJcrYuJArg

[boshog]

Did you guys ever watch the 2017 dyno shoot-out by TFL? RAM/Cummins was number one there, GM's dyno numbers were shocking, Ford's disappointing.

https://www.youtube.com/watch?v=emJcrYuJArg

[ShinerBock]

Cummins12V98 wrote:
The Cummins puts a BIG percentage of advertised HP to the ground.

I was in LasVegas recently, a 2018 2500 370HP advertised did 352 on the Dyno. So the number of 392 out of 400HP advertised does not surprise me.

That has not always been my experience. Most have been 40-60 hp less. Heck, Lavon even stated at 3:42 of the video that his stock 2016 advertised at 385 hp put down 342 hp on that very same dyno. That is about an 11% decrease which is right inline with the 10-15% decrease that most vehicles have. Most other 370-385 stock horsepower Cummins have always been around 330-345 hp at the wheels from what I have seen.

With a 10-15% decrease and putting 392 hp to the wheels, that truck should be making between 435-460 hp at the flywheel. So either Cummins/Ram is purposely sand bagging or his dyno is out of whack. Given that his 2016 power numbers were in line with most other Cummins I have seen, my guess is leaning towards Cummins/Ram sandbagging.

[IdaD]

The Cummins always lags the other two in acceleration but once underway it more than holds its own, despite lower horsepower numbers. I really like the way it behaves, towing or not, and I've just got the relatively wimpy 370/800 version.

[ib516]

392 hp produced at the wheels out of 400 hp rated. I wonder if some GM fans who are always flapping their gums about SAE rated this and that will think that is nutz :B

In any case, all the modern diesels have amazing amounts of power...including the 6 bangers in the 1500 trucks. The 230 - 240hp and 440 - 470 lb-ft of torque is what my 2002 5.9L Cummins 24V made, and it was an excellent tow vehicle.

[Cummins12V98]

The Cummins puts a BIG percentage of advertised HP to the ground.

I was in LasVegas recently, a 2018 2500 370HP advertised did 352 on the Dyno. So the number of 392 out of 400HP advertised does not surprise me.

[bucky]

Nice starter kit for the nitrous crowd.