6.7L Cummins VS 6.7L Cummins HO

Showme 5vr wrote:
For those of you that have towed with both the High Output Cummins and the regular Cummins was the HO worth the extra $2800?

Yes, as a bonus you get the Aisin HD transmission.

The HO engine has a little lower compression ratio, so, the regular output will be a little better on fuel when not towing. How often will you be towing and how much weight?

Yes but watch out for the exploding fuel pump

That depends on the year model and whether or not a CP4 injection pump is involved.

southernsky wrote:
Yes but watch out for the exploding fuel pump

bucky wrote:
That depends on the year model and whether or not a CP4 injection pump is involved.

Well Ram decided to go back to the CP3, and issued a recall on all 2019 and 2020 Rams with the CP4 to replace with the CP3.

All you have to do is hope yours gets fixed before it fails. :) That was one of the reasons I didn't look at anything newer than a 2018 when I bought.

I would say the HO engine point is moot but the transmission may be worth the upgrade.

IdaD wrote:
I would say the HO engine point is moot but the transmission may be worth the upgrade.

Yep, kind of the way I feel about it.

The Aisin might be better but I regularly tow 15 K in the mountains with my 68 RFE and I give it hail! I fear nothing about this transmission!

I have owned and towed 15K plus with both. The HO does it better and the Aisin is better loaded, but its not by a large margin. I think starting at 15K and above the HO makes more sense. Also my HO gets about 1-2 MPG less in most situations.