cptqueeg
Idaho
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Joined: 04/11/2020
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ktmrfs wrote:cptqueeg wrote:What is an approximate range of a CC LWB F350 w 7.3 gasser (48gal) vs the 3500 w duramax (36 gal) with a load of 3000lbs (pop-up TC, people, gear)?
(The truck would be stored all winter in an unheated garage so a gasser would avoid frozen DEF.)
DEF freezing is not an issue. Long exposure to high temps while stored is a bigger issue. All DEF vehicles have a heater to thaw the DEF
As for range our CC Duramax 2015.5 4x4 easily averages 18+ unloaded. pulling a 6500 lb cargo trailer 12-13 so your configuration would be somewhere in between for us. Pulling a 10K TT, 10-12
Thanks, should have added 4x4 to my description.
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Grit dog
Black Diamond, WA
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Joined: 05/06/2013
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The range between the 7.3 and Dmax will be about the same since in general the difference in efficiency is about the same as the difference in tank size.
But I don’t understand the reason for the apples vs oranges comparison.
2016 Ram 2500, MotorOps.ca EFIlive tuned, 5” turbo back, 6" lift on 37s
2017 Heartland Torque T29 - Sold.
Couple of Arctic Fox TCs - Sold
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cptqueeg
Idaho
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Joined: 04/11/2020
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Grit dog wrote:The range between the 7.3 and Dmax will be about the same since in general the difference in efficiency is about the same as the difference in tank size.
But I don’t understand the reason for the apples vs oranges comparison.
The most important reason is I don't need the towing capability of a diesel, the additional expense or the need to mess w DEF, but the range a dmax provides would overcome the 12 gallon smaller tank.
It's pretzel logic on my part, I realize, that's intertwined w my preference for GM over Ford and gas(in my application) over diesel.
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4x4ord
Alberta
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Joined: 12/23/2010
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cummins2014 wrote:
Wow 5000 RPM with a diesel , I'm sure that 6.7 Cummins would have pistons thru the block at that RPM . ![[emoticon]](http://www.coastresorts.com/sharedcontent/cfb/images/biggrin.gif "biggrin")
5000 rpm for a Cummins might be pushing it ... I don't know? I wasn't overly concerned to see that level of rpm for 12 miles with my Duramax.
2023 F350 SRW Platinum short box 4x4.
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2008 Citation Platinum XL 34.5
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ktmrfs
Portland, Oregon
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Joined: 06/22/2005
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4x4ord wrote:cummins2014 wrote:
Wow 5000 RPM with a diesel , I'm sure that 6.7 Cummins would have pistons thru the block at that RPM .
5000 rpm for a Cummins might be pushing it ... I don't know? I wasn't overly concerned to see that level of rpm for 12 miles with my Duramax.
with the eb engaged the dmax will shut off fuel flow and let the engine rev to near 5,000 if needed. no issue. friction losses go up as the cube of rpm so rpm helps slow you down in this case.
On early dmax the tach had a "redline" at just above 3Krpm, but apparently that caused enough confusion with grade brake operation that by 2015 the tach no longer has a redline.
rpm limit under power is just above 3Krpm.
2011 Keystone Outback 295RE
2004 14' bikehauler with full living quarters
2015.5 Denali 4x4 CC/SB Duramax/Allison
2004.5 Silverado 4x4 CC/SB Duramax/Allison passed on to our Son!
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