3.73 Vs 4.10 Mpg

PROFISHKILLER · 10-21-2007, 04:23 PM

Hello all new to forum, posting that is been lurking for a while. Amazing how much info you can sponge up from a forum such as this! Anyways, just ordered a 3500 SRW QC AUTO w/4.10 rear end. Since it is not to late to change ratio curious as to what the fuel milage difference I should expect. Reading all the posts it seems no one is thrilled about the mpg no matter what. Would l9ke to know what I will get with this combo. I realize driving habits play a major role in mpg. I do not haul a bunch, just big mamas 11k lb. horse trailor about 5 times a month. Any info would be greatly appreciated! Thanks in advance.
D.J.

***Diesel Head*** · 10-21-2007, 05:04 PM

I get 17-18 MPG doing 75 to 80 on the interstate

__________________
"I love the smell of burnt diesel in the morning , it smells like victory" USMC

2007 2500 6.7 Quad Cab, 4x4,
6 speed auto, 3.73, Banks Ram Air Intake, Banks Exhaust, 13-18 MPG, AY Flash, New Turbo, we need CNG NOW !!!

Last edited by Diesel Head : 10-26-2007 at 06:34 PM.

D-Roc · 10-21-2007, 05:22 PM

Most who have the G56 (early model) have mileage/ rpm's closer to 4.10 numbers.

AlaskaDog · 10-21-2007, 05:33 PM

Fishkiller,

I have the 3.73's which worked well until I put bigger tires on, now I wish I'd ordered the 4.10's. If you plan or installing a suspension system that includes larger diameter tires, I'd stick with what you ordered. If you want great mileage, go to the 3.73's and drink decafe!

Minzbgr · 10-21-2007, 11:37 PM

I have 4.10's and just started getting 17-17.5 mpg on the interstate at 70-75 mph and only 5100 miles on the truck.

__________________
2007.5 Mineral Grey & Light Silver, 6.7L, Auto, Quadcab, 4x4, 4.10, Laremie, Intake Baffle MIA, Tinted Windows, B&W turnover ball, with more addons in the works

Archcustoms · 10-21-2007, 11:58 PM

I am getting 16.8-17.0...but you won't find me in the right lane cruising much

__________________
2004.5 3500 4WD QuadCab Dually Long Bed 67,000 325/610 6 Speed Manual
Smarty, AFE Pro-Dry
Gutted-Torque Tube, Silencer and Muffler MIA, Tailgate DOA

**Diesel_Nuts** · 10-22-2007, 12:25 AM

Quote:

Originally Posted by AlaskaDog

Fishkiller,

I have the 3.73's which worked well until I put bigger tires on, now I wish I'd ordered the 4.10's. If you plan or installing a suspension system that includes larger diameter tires, I'd stick with what you ordered. If you want great mileage, go to the 3.73's and drink decafe!

I am in the same situation. I have the 3.73's, and when I lifted the truck on 37's, my mileage dropped a few mpg. One of the next things I do is upgrade to 4.10's. Some say go with the 4.56's, but that is only good if you tow a lot. I drive a lot on the highway, and I am getting 16mpg now. It should go up when I get the 4.10's. If you are not planning on lifting the truck with big tires, or towing a lot, I would get the 3.73's.

__________________
07 2500 QC (Electric Blue Pearl) 4x4, 5.9L, HTS Trans, Ostrich Seats, 8" Rize Lift, 20's on 37's, Amsoil w/ BMK-11, SMARTY, 5" MBRP, CFM+, AFE Stage 2/Nano Filter, BD Manifold, Quad Commander & Boost Fooler, FTE Rail Cap, Wicked CP3, Airdog 150, Mag Hytec Diff Covers. More to come....

DiPricol FP & RP, Thanks to John @ Holland Court....8" Mitre coming soon, Thanks to Wally @ FTE!!

PROFISHKILLER · 10-22-2007, 05:05 AM

Thanks For The Replies, Feel A Lot Better About The 4.10 Now. Was Just Worried I Would Be Getting Super Low Mileage. Lookin Foward To It For Sure. Anybody Else W/ The Same Set Up Would Love To Hear From Ya! Thanks.
Dj

**Diesel_Nuts** · 10-22-2007, 05:40 AM

PROFISHKILLER, are you planning on lifting the new truck? If so, you are probably going with the perfect setup. I tow sometimes, and it is killing me not having the 4.10's. That is going to be one of the next things I do.

__________________
07 2500 QC (Electric Blue Pearl) 4x4, 5.9L, HTS Trans, Ostrich Seats, 8" Rize Lift, 20's on 37's, Amsoil w/ BMK-11, SMARTY, 5" MBRP, CFM+, AFE Stage 2/Nano Filter, BD Manifold, Quad Commander & Boost Fooler, FTE Rail Cap, Wicked CP3, Airdog 150, Mag Hytec Diff Covers. More to come....

DiPricol FP & RP, Thanks to John @ Holland Court....8" Mitre coming soon, Thanks to Wally @ FTE!!

kratos · 10-22-2007, 08:27 PM

Quote:

Originally Posted by PROFISHKILLER

Thanks For The Replies, Feel A Lot Better About The 4.10 Now. Was Just Worried I Would Be Getting Super Low Mileage. Lookin Foward To It For Sure. Anybody Else W/ The Same Set Up Would Love To Hear From Ya! Thanks.
Dj

i drive a 07.5 3500 4x4 with the 68rfe(auto) 3.73 gears and 35" pro comps. i towed a 8000lb trailer through the rockies for two weeks on vacation this summer and i never felt like i needed 4.10s. it really depend on tire size in the end. my thinking is if you have six gears u can just slip into a lower one when towing. but if your not towing and u like to cruise at 90-100 mph once in a while

then u will wish u had those 3.73 gears to keep the revs down a little. most people wouldnt have 37s as the tire of choice on their tow rig. i would not be happy with the 4.10 personally because with all that tork why limit your top end speed and wast fuel

kratos · 10-22-2007, 08:33 PM

Quote:

Originally Posted by PROFISHKILLER

Thanks For The Replies, Feel A Lot Better About The 4.10 Now. Was Just Worried I Would Be Getting Super Low Mileage. Lookin Foward To It For Sure. Anybody Else W/ The Same Set Up Would Love To Hear From Ya! Thanks.
Dj

i drive a 07.5 3500 4x4 with the 68rfe(auto) 3.73 gears and 35" pro comps. i towed a 8000lb trailer through the rockies for two weeks on vacation this summer and i never felt like i needed 4.10s. it really depend on tire size in the end. my thinking is if you have six gears u can just slip into a lower one when towing. but if your not towing and u like to cruise at 90-100 mph once in a while

then u will wish u had those 3.73 gears to keep the revs down a little. most people wouldnt have 37s as the tire of choice on their tow rig. i would not be happy with the 4.10 personally because with all that tork why limit your top end speed and wast fuel

***K5Cruz*** · 10-23-2007, 03:14 AM

I have a G56 with 3.73's and get terrible mileage. At 70 the truck is over 2k RPM with 33" tires. Think average of 13-15 between 70 and 80 unloaded, interstate. Pulling a 28', weighing maybe 8k, enclosed I averaged 8.5 at 75.

__________________
2007 6.7 2500 Crew Cab 6 Speed Manual. Black, Black Rockstars, STTs, H&S 4", MBRP, PMT, AFE. EGR and Clutch next.
6 months and counting for my Road Armor. Talk about bad customer service.

10-21-2007, 04:23 PM	#1 (permalink)
PROFISHKILLER Newbie Join Date: Oct 2007 Location: OUTER BANKS NC Posts: 26 PROFISHKILLER's Truck Pics	3.73 Vs 4.10 Mpg Hello all new to forum, posting that is been lurking for a while. Amazing how much info you can sponge up from a forum such as this! Anyways, just ordered a 3500 SRW QC AUTO w/4.10 rear end. Since it is not to late to change ratio curious as to what the fuel milage difference I should expect. Reading all the posts it seems no one is thrilled about the mpg no matter what. Would l9ke to know what I will get with this combo. I realize driving habits play a major role in mpg. I do not haul a bunch, just big mamas 11k lb. horse trailor about 5 times a month. Any info would be greatly appreciated! Thanks in advance. D.J.

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10-21-2007, 05:04 PM	#2 (permalink)
*Diesel Head* Diesel Freak Join Date: Jul 2007 Location: Kingston, TN Posts: 616 Diesel Head's Truck Pics	I get 17-18 MPG doing 75 to 80 on the interstate __________________ "I love the smell of burnt diesel in the morning , it smells like victory" USMC 2007 2500 6.7 Quad Cab, 4x4, 6 speed auto, 3.73, Banks Ram Air Intake, Banks Exhaust, 13-18 MPG, AY Flash, New Turbo, we need CNG NOW !!! Last edited by Diesel Head : 10-26-2007 at 06:34 PM.

10-21-2007, 05:22 PM	#3 (permalink)
D-Roc Diesel Head Join Date: Nov 2005 Posts: 1,292 D-Roc's Truck Pics	Most who have the G56 (early model) have mileage/ rpm's closer to 4.10 numbers.

10-21-2007, 05:33 PM	#4 (permalink)
AlaskaDog Newbie Join Date: Dec 2006 Location: Alaska Posts: 6 AlaskaDog's Truck Pics	Fishkiller, I have the 3.73's which worked well until I put bigger tires on, now I wish I'd ordered the 4.10's. If you plan or installing a suspension system that includes larger diameter tires, I'd stick with what you ordered. If you want great mileage, go to the 3.73's and drink decafe!

10-21-2007, 11:37 PM	#5 (permalink)
Minzbgr CUMMINS BELIEVER!!!! Join Date: Sep 2007 Location: South Mississippi Posts: 117 Minzbgr's Truck Pics	I have 4.10's and just started getting 17-17.5 mpg on the interstate at 70-75 mph and only 5100 miles on the truck. __________________ 2007.5 Mineral Grey & Light Silver, 6.7L, Auto, Quadcab, 4x4, 4.10, Laremie, Intake Baffle MIA, Tinted Windows, B&W turnover ball, with more addons in the works

10-21-2007, 11:58 PM	#6 (permalink)
Archcustoms Cummins Fan Join Date: Oct 2007 Location: Houston/St. Louis/Equatorial Guinea Posts: 41 Archcustoms's Truck Pics	I am getting 16.8-17.0...but you won't find me in the right lane cruising much __________________ 2004.5 3500 4WD QuadCab Dually Long Bed 67,000 325/610 6 Speed Manual Smarty, AFE Pro-Dry Gutted-Torque Tube, Silencer and Muffler MIA, Tailgate DOA

10-22-2007, 05:05 AM	#8 (permalink)
PROFISHKILLER Newbie Join Date: Oct 2007 Location: OUTER BANKS NC Posts: 26 PROFISHKILLER's Truck Pics	Thanks For The Replies, Feel A Lot Better About The 4.10 Now. Was Just Worried I Would Be Getting Super Low Mileage. Lookin Foward To It For Sure. Anybody Else W/ The Same Set Up Would Love To Hear From Ya! Thanks. Dj

10-22-2007, 05:40 AM	#9 (permalink)
Diesel_Nuts TEXAS EAST VP Join Date: Oct 2007 Location: Spring Tx. Posts: 1,739 Diesel_Nuts's Truck Pics	PROFISHKILLER, are you planning on lifting the new truck? If so, you are probably going with the perfect setup. I tow sometimes, and it is killing me not having the 4.10's. That is going to be one of the next things I do. __________________ 07 2500 QC (Electric Blue Pearl) 4x4, 5.9L, HTS Trans, Ostrich Seats, 8" Rize Lift, 20's on 37's, Amsoil w/ BMK-11, SMARTY, 5" MBRP, CFM+, AFE Stage 2/Nano Filter, BD Manifold, Quad Commander & Boost Fooler, FTE Rail Cap, Wicked CP3, Airdog 150, Mag Hytec Diff Covers. More to come.... DiPricol FP & RP, Thanks to John @ Holland Court....8" Mitre coming soon, Thanks to Wally @ FTE!!

10-23-2007, 03:14 AM	#12 (permalink)
*K5Cruz* EPA This Join Date: Oct 2007 Location: Seminole, OK Posts: 351 K5Cruz's Truck Pics	I have a G56 with 3.73's and get terrible mileage. At 70 the truck is over 2k RPM with 33" tires. Think average of 13-15 between 70 and 80 unloaded, interstate. Pulling a 28', weighing maybe 8k, enclosed I averaged 8.5 at 75. __________________ 2007 6.7 2500 Crew Cab 6 Speed Manual. Black, Black Rockstars, STTs, H&S 4", MBRP, PMT, AFE. EGR and Clutch next. 6 months and counting for my Road Armor. Talk about bad customer service.