New 2014 2500

[RVTRKN]

You have the AE ratios correct?

Yes, it has the AE version.

 

[Cummins12V98]

Cummins12V98, can you see your EGT and what gear/RPM were you in, pulling that 29K GCVW up the 6% grade? I doubt that my new truck will ever pull any loads for long periods, it is an Air-conditioning Service truck as you see in the pic on a previous post.

No idea on the EGT's! The West coast Warranty rep said not to worry "it can't hurt it's self". I just hold it to the floor.

I am turning about 2,700rpm at 55. Here is a pic just before cresting Ashland Pass on I-5 North into Oregon.

 

[Cummins12V98]

ooooopppppsssss

 

[RVTRKN]

Even though your highest gear selection is 5th, it seems your in 4th or maybe even third gear. Believe it or not, that RPM is good for your EGT, the EGT temperatures are higher when you lug your CTD. I've had my C&C climbing the So. bound I-5 in the Grape-Vine, in 4th at 3000 RPM with 23K GCVW doing 55-60 MPH. I always run at 23-2500 RPM when climbing to help get more air than fuel, its the oposite that is the killer, low air to fuel ratio while lugging your CTD.

 

[photowrite]

Even though your highest gear selection is 5th, it seems your in 4th or maybe even third gear. Believe it or not, that RPM is good for your EGT, the EGT temperatures are higher when you lug your CTD. I've had my C&C climbing the So. bound I-5 in the Grape-Vine, in 4th at 3000 RPM with 23K GCVW doing 55-60 MPH. I always run at 23-2500 RPM when climbing to help get more air than fuel, its the oposite that is the killer, low air to fuel ratio while lugging your CTD.

Agreed.

With my pervious outfits, there was a big difference at a given speed between pulling at a lower but not low rpm in overdrive (not technically "lugging"), vs. the next gear lower (direct) with much higher rpm. The main concern then became engine/coolant temp as it would rise over the suggested number with a trailer load, up hills, particularly in the summer.

Nice to see the above poster spinning his Cummins around 2,700 under load, as it seems some are afraid to use the whole rpm range. High-load, low-rpm, deep accelerator pedal use should be understood and respected.

 

[RVTRKN]

As my tech told me when I first bought the 04.5, if you stay within the GCVWR Dodge recommends and keep the RPM's up when climbing there is no need to see your EGT.

 

[Cummins12V98]

Even though your highest gear selection is 5th, it seems your in 4th or maybe even third gear. Believe it or not, that RPM is good for your EGT, the EGT temperatures are higher when you lug your CTD. I've had my C&C climbing the So. bound I-5 in the Grape-Vine, in 4th at 3000 RPM with 23K GCVW doing 55-60 MPH. I always run at 23-2500 RPM when climbing to help get more air than fuel, its the oposite that is the killer, low air to fuel ratio while lugging your CTD.

I agree, I keep the RPM's up that is where your highest HP is and the engine runs cooler. I was in 3rd gear. With the 3:42's I usually tow in 5th. Basically the same RPM's as if it were in 6th with 4:10's.