RAM 2500 Cummins (6.7L) Diesel Engine VS 6.7L POWERSTROKE | Towing Challenge Part 2

I review a 2022 RAM 2500 Cummins 6.7L Diesel Engine as a heavy duty mechanic and see how well this engine can tow a heavy trailer. we look at acceleration, fuel economy (mpg), engine braking, engine performance and engine design in comparison to a 2023 Ford F250 powerstroke to determine what is the Best Diesel engine for a pick up truck.

Towing Review PART 1 -    • RAM 2500 Cummins 6.7L Diesel Engine R...  

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*** Powerstroke Towing Review Video -    • FORD F-250 Superduty 6.7L Powerstroke...  


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I hope everyone is having a good long weekend! Today I am behind the wheel of this awesome powerful 6.7L Cummins Turbo Diesel Engine. and we are towing a heavy trailer behind this ram 2500 diesel.

So the first notable thing was the squat with the fully loaded up trailer. this truck squatted an extra inch over the F250 powerstroke which I think is probably associated with ram coil suspension set up.

one I got on the road, the cummins exhaust brake is absolutely amazing. it is pretty powerful and will stop the truck very well. when I was on the highway going down some steep hills the exhaust brake kept us at the perfect speed and is by far better then the Powerstrokes exhaust brake

in terms of acceleration, the Powerstroke was a much faster engine with a full load behind it. the Cummins did feel a little sluggish on the top end performance in comparison to the Powerstrokes top end power.

another very notible thing about the Cummins is the engine design. this engine is an inline 6 design which has a number of advantages. the first being the natural advantage of making torque extremely well and very low int he RPM band. this is amazing for towing.

fuel economy in the Cummins when towing was a little bit worse then the Powerstroke but with 14,000lbs behind the truck the Cummins was a pretty efficient engine.

But the weak point for the cummins in the RAM 2500 was the 68RFE tranmission. to me this is a little bit of a let down. this tranmission is not a very strong or good unit and only has 6 gears which greatly limits the versatility of this cummins engine when it comes to towing big hills like we did.

conversely the 6.7L powerstroke with it's 10 speed transmission is always in the torque band allowing the engine to perform very well at all speeds. the other notible thing is that the top gear for the ram 2500 is a pretty weak gear and has been known to burn up under loads.

I hope ram comes out with a better transmission in the future for this awesome cummins engine to really let it shine.

overall the low end torque coming out of this 6.7L Cummins diesel engine is amazing to see, this resulted in the truck almost never having to downshift on hills which was cool to see.

But I had to give this one to the powerstroke simply because of its ability to pull the loaded trailer up big hills better.