20 mpg?

Russell Sullivan · 11-04-2009, 12:21 PM

I have a 1991 5.9 and a 2001 5.9 and get 20 mpg or better on both at 65 mph running empty. Would like to buy a 6.7 and hope to get 20 also. Is this possible? Will the 6.7's get 20 or better?
Thanks
Russell

Tom Diesel · 11-04-2009, 02:20 PM

If you do the deletes. You might get close to twenty. If I run only highway I can do 20.5 or so.

__________________
07 6.7l 2500 Mega 4X4 auto, 3.73, EAGLE 114 CHROME, 305/55/20 Nitto A/T, De-badged, SMARTY, Volant PowerCore, 5" Magna Flow TBE, V-TEC

CTD&TDI · 11-04-2009, 08:10 PM

i just ran 500 miles of primarily only interstate, 07 3500 cc 4.10 auto, empty, just truck, w/ avg speed of 70-75 and got 15.6mpg...no deletes or anything, stock truck. so is 20 possible? prolly if you hyper-mile...20 likey? not IMHO...

we can barely eek out 20 in my dads 04, 3.73, 4x2, manual

__________________
http://www.fuelly.com/sig-us/19350.png
2007 3500 C&C, 6.7, Aisin 6spd auto, 4.10 rear end, 4x4, Black, Reg cab, 67k
2004 3500, 5.9, 6 spd manual, 3.73, 4x2, Black, Quad cab, 128k

Tom Diesel · 11-04-2009, 08:16 PM

You'd be surprised how much the deletes can help. I was 13ish to 15ish before. Now I never get below 16 mpg. I had to go to Lexington, KY this past weekend and the over head showed 20.9 mpg when I got there. It's normally off ~1.1 mpg.

__________________
07 6.7l 2500 Mega 4X4 auto, 3.73, EAGLE 114 CHROME, 305/55/20 Nitto A/T, De-badged, SMARTY, Volant PowerCore, 5" Magna Flow TBE, V-TEC

Russell Sullivan · 11-05-2009, 12:09 AM

Quote:

Originally Posted by CTD&TDI

i just ran 500 miles of primarily only interstate, 07 3500 cc 4.10 auto, empty, just truck, w/ avg speed of 70-75 and got 15.6mpg...no deletes or anything, stock truck. so is 20 possible? prolly if you hyper-mile...20 likey? not IMHO...

we can barely eek out 20 in my dads 04, 3.73, 4x2, manual

Thanks for the info.
R

04SSHD · 11-05-2009, 04:37 AM

I get about 22mpg with my C&C, and I expect it to get better when my 3.73's get installed

__________________
07.5 Dodge Ram 3500HD SLT 6.7L,11/06 build,5/08 delivery,PMT,DPF & EGR fell off,G56,4.10 (3.73 soon),C&C,HBS,5000k HID Solutions lights & fogs,14,000 miles to date,35" M/T,22.5's soon,Dyno at 445hp/907tq

aschuerg · 11-05-2009, 07:31 AM

i did the deletes loaded 16k 70mph getting 16. empty @60 mph 22+ 6.7 auto 488 gears 4x4 Mich tires w 80# nitro filled hypertech chip level3.

Moparman · 11-07-2009, 08:58 PM

Quote:

Originally Posted by aschuerg

i did the deletes loaded 16k 70mph getting 16. empty @60 mph 22+ 6.7 auto 488 gears 4x4 Mich tires w 80# nitro filled hypertech chip level3.

Hard to believe you get 22+ with 4.88 and 4x4.

__________________
2006 white quad cab Dodge dually, G56, True Flow XDI air filter system, FilterMag, am/fm/cd/sirius, Fluidampr, LineX bedliner, 3.73, gooseneck hitch, Mag-Hytec rear diff cover, rear bags w/ in-cab controls, P235/80R17 Michelin LTX M&S on stock wheels

CFNibertCC · 11-07-2009, 09:52 PM

My overhead shows 20.0 unloaded @ 70 on I-75 from Dayton to Lexington. I get 15.0 city unloaded and 14.0 haulin crushed
concrete.

__________________
07 3500 C&C 6.7Aisin 4X4 4" TBE
01 2500 CTD 4X4 4" TBE 96 3.4L V8Taurus SHO
98 3500 CTD 4X4 (Bill Oty 1957-2009)

CTD&TDI · 11-07-2009, 10:38 PM

i never have seen my overheard to be very accurate tho...

i log all my fuel data on fuelly.com

real ez to do on your phone and gives you a complete history

__________________
http://www.fuelly.com/sig-us/19350.png
2007 3500 C&C, 6.7, Aisin 6spd auto, 4.10 rear end, 4x4, Black, Reg cab, 67k
2004 3500, 5.9, 6 spd manual, 3.73, 4x2, Black, Quad cab, 128k

ponyboy123 · 11-08-2009, 05:49 PM

My 09 C/C 5500 gets 10 mpg haulin a 25' tandem dually trailer 99% of the time. Half the time it is loaded with 16,000 to 24,000 lbs of mink feed and the other half it is empty.

__________________
2009 5500 C&C all stock

cummins67L · 11-08-2009, 06:35 PM

Quote:

Originally Posted by ponyboy123

My 09 C/C 5500 gets 10 mpg haulin a 25' tandem dually trailer 99% of the time. Half the time it is loaded with 16,000 to 24,000 lbs of mink feed and the other half it is empty.

Your truck is doing good stock.
CC do not get 20+ most of the time the over head is 2 miles high.

11-04-2009, 12:21 PM	#1 (permalink)
Russell Sullivan Newbie Join Date: Dec 2008 Posts: 9 Thanks: 5 Thanked 0 Times in 0 Posts Russell Sullivan's Truck Pics	20 mpg? I have a 1991 5.9 and a 2001 5.9 and get 20 mpg or better on both at 65 mph running empty. Would like to buy a 6.7 and hope to get 20 also. Is this possible? Will the 6.7's get 20 or better? Thanks Russell

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11-04-2009, 02:20 PM	#2 (permalink)
Tom Diesel Diesel Freak Join Date: Dec 2008 Location: Montgomery, AL Posts: 521 Thanks: 8 Thanked 21 Times in 18 Posts Tom Diesel's Truck Pics	If you do the deletes. You might get close to twenty. If I run only highway I can do 20.5 or so. __________________ 07 6.7l 2500 Mega 4X4 auto, 3.73, EAGLE 114 CHROME, 305/55/20 Nitto A/T, De-badged, SMARTY, Volant PowerCore, 5" Magna Flow TBE, V-TEC

11-04-2009, 08:10 PM	#3 (permalink)
CTD&TDI Cummins Fan Join Date: Oct 2008 Posts: 99 Thanks: 0 Thanked 1 Time in 1 Post CTD&TDI's Truck Pics	i just ran 500 miles of primarily only interstate, 07 3500 cc 4.10 auto, empty, just truck, w/ avg speed of 70-75 and got 15.6mpg...no deletes or anything, stock truck. so is 20 possible? prolly if you hyper-mile...20 likey? not IMHO... we can barely eek out 20 in my dads 04, 3.73, 4x2, manual __________________ http://www.fuelly.com/sig-us/19350.png 2007 3500 C&C, 6.7, Aisin 6spd auto, 4.10 rear end, 4x4, Black, Reg cab, 67k 2004 3500, 5.9, 6 spd manual, 3.73, 4x2, Black, Quad cab, 128k

11-04-2009, 08:16 PM	#4 (permalink)
Tom Diesel Diesel Freak Join Date: Dec 2008 Location: Montgomery, AL Posts: 521 Thanks: 8 Thanked 21 Times in 18 Posts Tom Diesel's Truck Pics	You'd be surprised how much the deletes can help. I was 13ish to 15ish before. Now I never get below 16 mpg. I had to go to Lexington, KY this past weekend and the over head showed 20.9 mpg when I got there. It's normally off ~1.1 mpg. __________________ 07 6.7l 2500 Mega 4X4 auto, 3.73, EAGLE 114 CHROME, 305/55/20 Nitto A/T, De-badged, SMARTY, Volant PowerCore, 5" Magna Flow TBE, V-TEC

11-05-2009, 04:37 AM	#6 (permalink)
04SSHD Diesel Head Join Date: Jun 2008 Location: Moorpark, CA Posts: 1,850 Thanks: 9 Thanked 20 Times in 18 Posts 04SSHD's Truck Pics	I get about 22mpg with my C&C, and I expect it to get better when my 3.73's get installed __________________ 07.5 Dodge Ram 3500HD SLT 6.7L,11/06 build,5/08 delivery,PMT,DPF & EGR fell off,G56,4.10 (3.73 soon),C&C,HBS,5000k HID Solutions lights & fogs,14,000 miles to date,35" M/T,22.5's soon,Dyno at 445hp/907tq

11-05-2009, 07:31 AM	#7 (permalink)
aschuerg Newbie Join Date: Nov 2008 Location: lynchburg tn Posts: 25 Thanks: 0 Thanked 0 Times in 0 Posts aschuerg's Truck Pics	i did the deletes loaded 16k 70mph getting 16. empty @60 mph 22+ 6.7 auto 488 gears 4x4 Mich tires w 80# nitro filled hypertech chip level3.

11-07-2009, 09:52 PM	#9 (permalink)
CFNibertCC Cummins Nut Join Date: Nov 2007 Location: Springfield, Ohio Posts: 374 Thanks: 1 Thanked 1 Time in 1 Post CFNibertCC's Truck Pics	My overhead shows 20.0 unloaded @ 70 on I-75 from Dayton to Lexington. I get 15.0 city unloaded and 14.0 haulin crushed concrete. __________________ 07 3500 C&C 6.7Aisin 4X4 4" TBE 01 2500 CTD 4X4 4" TBE 96 3.4L V8Taurus SHO 98 3500 CTD 4X4 (Bill Oty 1957-2009)

11-07-2009, 10:38 PM	#10 (permalink)
CTD&TDI Cummins Fan Join Date: Oct 2008 Posts: 99 Thanks: 0 Thanked 1 Time in 1 Post CTD&TDI's Truck Pics	i never have seen my overheard to be very accurate tho... i log all my fuel data on fuelly.com real ez to do on your phone and gives you a complete history __________________ http://www.fuelly.com/sig-us/19350.png 2007 3500 C&C, 6.7, Aisin 6spd auto, 4.10 rear end, 4x4, Black, Reg cab, 67k 2004 3500, 5.9, 6 spd manual, 3.73, 4x2, Black, Quad cab, 128k

11-08-2009, 05:49 PM	#11 (permalink)
ponyboy123 Newbie Join Date: Jul 2009 Posts: 18 Thanks: 4 Thanked 0 Times in 0 Posts ponyboy123's Truck Pics	My 09 C/C 5500 gets 10 mpg haulin a 25' tandem dually trailer 99% of the time. Half the time it is loaded with 16,000 to 24,000 lbs of mink feed and the other half it is empty. __________________ 2009 5500 C&C all stock