Torque wars continue in the diesels

4x4ord wrote:

Cummins12V98 wrote:
They know they need to do something since the 2019 RAM will have zero engine emissions and will be coming out with big numbers because of that.

There are a few (like you) pulling 30,000 lb rv's with 385 HP who could maybe use a little more power but I think I would have more use for a cold water dispenser in my truck than more power.

I would not complain if I had more power but I am NOT complaining with the power I have towing a combined 33-35K.

I like the CW dispenser idea!!!

blt2ski wrote:
I'm still driving a NA7.3 with a 185/336 motor, 7 sp spicer, 4.33 gears, pulling/going down the road at upwards of 26K lbs gvw/gcwr! Not the fastest, but never stalled it out on a steep grade! Did that done that on a few 454 1 tons!

power is one thing, but if one does not have the gears, in both tranny and axels, compared to tire diam to get something up a, in my case, roads to clients homes in the 15-25, one case 33% relm, truck is useless! I don't care if it has the most HP or torque, its useless! Yeah I may get up a 4% freeway grade faster, as my 05 dmax did at 26K lbs, but it only had the ability to pull a 24% grade at 20K lbs, the lowly navistar 30K lbs up a just over 30% grade! So yes, I go slower on thee freeway grade, but do not stall out on the grade getting to the clients home half a mile away or less!

Marty

I expect the new trucks to be capable of pulling 30,000 lbs up a 30% grade. You might have to drop to 4 low but it should do it.

I'm still driving a NA7.3 with a 185/336 motor, 7 sp spicer, 4.33 gears, pulling/going down the road at upwards of 26K lbs gvw/gcwr! Not the fastest, but never stalled it out on a steep grade! Did that done that on a few 454 1 tons!

power is one thing, but if one does not have the gears, in both tranny and axels, compared to tire diam to get something up a, in my case, roads to clients homes in the 15-25, one case 33% relm, truck is useless! I don't care if it has the most HP or torque, its useless! Yeah I may get up a 4% freeway grade faster, as my 05 dmax did at 26K lbs, but it only had the ability to pull a 24% grade at 20K lbs, the lowly navistar 30K lbs up a just over 30% grade! So yes, I go slower on thee freeway grade, but do not stall out on the grade getting to the clients home half a mile away or less!

Marty

blofgren wrote:

FishOnOne wrote:
And towing just got easier with the medium duty 6.7 Power Stroke and Torque Shift transmission.

LOL, so maybe it won't come in dead last on the big pull next time? ;) :B

True....,

Yes my Sisters and Brothers, as a 60 year old, that has been around diesel trucks his entire life, we are indeed a living in the promised land of diesel trucks. All of the big three are good, and we are hair splitting to find the best. Just buy on price for the features you want. And this really pains a geek engineer to say, but don't waste your time over thinking the decision.

1stgenfarmboy wrote:


my truck came from the factory with 160hp/400lbtq when new and was the talk of the industry in the early 90's,

My prior truck with the 7.3 had 180hp with 338ft-lb. It did just fine pulling 9k lbs. Not the fastest but never worried about making it up the hills. And when we sold it at 300k miles, it was still just chugging along.

Yeah, having more HP is nice but at some point it's about bragging rights and does nothing for the average drivers towing experience.

4x4ord wrote:


There are a few (like you) pulling 30,000 lb rv's with 385 HP who could maybe use a little more power but I think I would have more use for a cold water dispenser in my truck than more power.

Ha, well put. All these numbers are simply a bragging right that don't mean a darn thing to 99.999% of owners. Pick the prettiest one you can afford and drive happily ever after. They are all great trucks if you can afford any of them. All I can say is thank goodness for the used truck market!!!

ShinerBock wrote:

4x4ord wrote:
........so isn't it likely that "torque management" refers to cutting fuel during shift points to protect the clutches in the transmission?

Torque management is also cutting fuel, boost, and timing in lower gears and rpms to keep cylinder pressure(aka torque) in check so you don't blow head gaskets. It will also defuel if your EGT's get too high. If you have ever tuned a diesel with EFILive and saw the tables then you would understand.

Maybe the video below might help explain things a little better than I. Note that it is a tuned engine so the torque management is altered and the percentages would be less in more gears in stock form. An tuned diesel with head studs and a built trans can run with torque management off or lowered.

LNF Torque Management Video

I found that video interesting .... thank you.

Typically the medium duty trucks get detuned from the 350 version, so this is interesting. They must have a lot of faith in the truck or they have the computer dialed in to the point that it will prevent its own destruction. The GM/IH medium duty trucks will available for order this Spring, I am told. Should be interesting to see how the spec sheet compares.

FishOnOne wrote:
And towing just got easier with the medium duty 6.7 Power Stroke and Torque Shift transmission.

LOL, so maybe it won't come in dead last on the big pull next time? ;) :B