4x4ord
Alberta
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Cummins12V98 wrote:4x4ord wrote:^^^You can call it programming or whatever but it comes down to power. I don't know what grade the hill was that he was pulling but to pull a 14,000 lb trailer up a steep hill at 110 kph takes a lot of power. He was comparing a 385 HP Ram to a 500 HP Ford.... and he says it didn't pull as well on account of the 6 speed transmission, ![[emoticon]](http://www.coastresorts.com/sharedcontent/cfb/images/doh.gif "doh") .
OK, explain why he had only 22psi boost?
I think he said 24 psi boost at one point. At 2000 rpm the standard output Cummins is not tuned to produce a whole lot of torque ….. no more than the 850 lbft peak torque it makes at 1800 rpm. Does the Cummins need more than 24 psi boost to make 320 hp at 2000 rpm?
The thing is the standard output Cummins is only able to produce about 320 Hp at 2000 rpm and he’s comparing that to a high output Powerstroke that should be able to produce about 420 Hp at 1900 rpm.
* This post was
edited 07/26/23 08:49am by 4x4ord *
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Cummins12V98
on the road
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4x4ord wrote:Cummins12V98 wrote:4x4ord wrote:^^^You can call it programming or whatever but it comes down to power. I don't know what grade the hill was that he was pulling but to pull a 14,000 lb trailer up a steep hill at 110 kph takes a lot of power. He was comparing a 385 HP Ram to a 500 HP Ford.... and he says it didn't pull as well on account of the 6 speed transmission, .
OK, explain why he had only 22psi boost?
I think he said 24 psi boost at one point. At 2000 rpm the standard output Cummins is not tuned to produce a whole lot of torque ….. no more than the 850 lbft peak torque it makes at 1800 rpm. Does the Cummins need more than 24 psi boost to make 320 hp at 2000 rpm?
The thing is the standard output Cummins is only able to produce about 320 Hp at 2000 rpm and he’s comparing that to a high output Powerstroke that should be able to produce about 420 Hp at 1900 rpm.
Supposedly if it downshifted it would be redline??? I highly doubt that from to 2k to 3.2k.
Something does not sound right about all this. I am NOT disputing the FORD has much more power but.....
2015 RAM LongHorn 3500 Dually CrewCab 4X4 CUMMINS/AISIN RearAir 385HP/865TQ 4:10's
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4x4ord
Alberta
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^^^^The guy doesn’t know what he’s talking about. The 68RFE could have dropped to 4th gear at 2000 rpm. That would have caused the engine to rev to 2440 rpm where it would have made enough power to quickly get up to speed…. then it could have upshifted back to 5th where it may or may not have been able to maintain 110 km per hour.
So, instead, it stayed in fifth at about 3 mph under the cruise control set point and slowly gained speed. I don’t see that as a bad thing.
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Cummins12V98
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It's just that he basically was bad mouthing something he should not have. "Bad transmission it needs more gears", it has gears he could have used them.
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Huntindog
Phoenix AZ
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Cummins12V98 wrote:It's just that he basically was bad mouthing something he should not have. "Bad transmission it needs more gears", it has gears he could have used them.
Someday the Ram will have more gears as well. Then these conversations will be moot.
My 2001 Dmax had a 5 speed, the 2011 a 6 speed. and the 2020 a 10 speed. Each tranny performed better than it's predessor.
You will agree once you have one
Huntindog
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blt2ski
Kirkland, Wa
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Huntindog wrote:Cummins12V98 wrote:It's just that he basically was bad mouthing something he should not have. "Bad transmission it needs more gears", it has gears he could have used them.
Someday the Ram will have more gears as well. Then these conversations will be moot.
My 2001 Dmax had a 5 speed, the 2011 a 6 speed. and the 2020 a 10 speed. Each tranny performed better than it's predessor.
You will agree once you have one
I agree re the more gears is nice! I remember the TH400 POS 3 sp auto in some GM's I had. The NV4500 better than the TH400, a bit better than the SM 4 sp. The 700R4 better than the 4L80E. The 05 5sp ally not bad. My current 6 sp in my 1500 is the best GM auto I've driven. DO have to admit, the 10 sp in the work transit van is the best so far. BUT, dare I say for how I use, don't need the 4.10 gears. The 3.55 I had in the previous 6sp should be better. Probably gain 2 mpg or there about too. I really don't need to be turning 2000 rpm at 60. 1600 was fine with the 6 sp auto transit at 60.
Best pulling transmission has been the Spicer 7sp emanual in my Navistar. The NV 4500 in my 96 6.5td was a good setup too with 4.10's.
Transmissions in general, keep getting better and better! As do engines, and the vehicles themselves generally speaking.
Marty
92 Navistar dump truck, 7.3L 7 sp, 4.33 gears with a Detroit no spin
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4x4ord
Alberta
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Cummins12V98 wrote:It's just that he basically was bad mouthing something he should not have. "Bad transmission it needs more gears", it has gears he could have used them.
The standard output Cummins doesn't have the kind of torque rise that the high output does. More gears behind the Standard Output would help it perform a little better.
As presently tuned, the HO wouldn't benefit much at all by adding gears. If they ever put more gears behind the High Output Cummins they will probably flatten out the torque curve a little bit as well. By doing so they will increase the peak HP some to help it compete a little better with GM and Ford.
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FishOnOne
The Great State of Texas
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4x4ord wrote:Cummins12V98 wrote:It's just that he basically was bad mouthing something he should not have. "Bad transmission it needs more gears", it has gears he could have used them.
The standard output Cummins doesn't have the kind of torque rise that the high output does. More gears behind the Standard Output would help it perform a little better.
As presently tuned, the HO wouldn't benefit much at all by adding gears. If they ever put more gears behind the High Output Cummins they will probably flatten out the torque curve a little bit as well. By doing so they will increase the peak HP some to help it compete a little better with GM and Ford.
It seems that since the French took over Chrysler, RAM hasn't really made any significant upgrades. The exception could be their upcoming EV truck and their 1500 ICE trucks midcycle refresh isn't expected to be released until MY 2025.
* This post was
edited 07/27/23 09:24am by FishOnOne *
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Bionic Man
USA
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The troll has blatantly entered the chat…..
2012 RAM 3500 Laramie Longhorn DRW CC 4x4 Max Tow, Cummins HO, 60 gallon RDS aux fuel tank, Reese 18k Elite hitch
2003 Dodge Ram 3500 QC SB 4x4 Cummins HO NV5600 with Smarty JR, Jacobs EB (sold)
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FishOnOne
The Great State of Texas
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And so has the RV.net Karen... Along his all new revised mirrors for 2023 ![[emoticon]](http://www.coastresorts.com/sharedcontent/cfb/images/awink.gif "awink")
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