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Gearing it would deff be the best idea. Running in the higher gears will lower the rpm and decrease the load the engine has to deal with. So I would imagine that gears and getting into higher gear alone will help bring that up

 

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Playful Badger


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...and Welcome To The Texas Chapter Of HTC :cowboy1_icon:

I'm an absolute believer in the 4:56 gears - I drove out that way and past Kerrville where you can legally hit 80 (most going closer to 90) my mileage didn't suffer at all in a 4x2 Quad Cab 5.7 - so I would think with correct gearing you should get better overall mileage and do the same pulling a load with your 6.4 :thumb:.


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IMO, regearing to 4:10 or 4:56 would help you out. However with a 2500 4x4 doing both axles you would be at a guess around $3500 into the change. That buys a lot of gas.. What mileage do you get unloaded?
Welcome to the forum...

 

I get about 14 mpg unloaded when I keep my foot light. That's calculated, the dash says 15mpg.

I don't tow that often so maybe it wouldn't be worth changing the gears. I think the fact that I had to stop for gas so often bothers me more than the cost. That made the trip more stressful and longer than anticipated. Maybe I need to find an a way to add some fuel capacity for the occasional long distance trips I'm planning to take.

 

Depending how late last fall you road tripped, you may have already been getting winter mix gas. That would negatively affect MPG also.

 

That's exactly what my '11 5.7 hemi does unloaded with 4.10 gears. Well, I've got a 200 lb front bumper and 200 lbs of tools in the toolbox so unloaded is a relative term

 

The gear change would also improve you unloaded mileage and make the truck more responsive. But adding a tank or two would keep you from running out of gas. Good luck..

 

Yep there will most likely always be a trade-off somewhere

 

Have you looked into a co. called transfer flow inc. go to transferflow,com. They make extra fuel tanks for your truck. My neighbor has one on his truck and it works fine.

 

On your next tow, try driving 65 mph. Pulling a toy hauler loaded to 11k lbs at such a high speed is dangerous. Just because you can, doesn't mean you should.

 

Good advise!! I never go over 65 when pulling my 36 foot camper! Not good for gas mileage or the tires, plus it's dangerous!

 

something doesn't seem right with that fuel economy our tt is almost 10 k as well and my 2014 2500 5.7 3.73 averages 9-11 but that's at 65-70, remember speed kills mpg and all federal highways have a minimum speed of 45 so don't feel compelled to run 80 just because everyone else is, and remember most trailer tires are speed rated only to 65 except for a few high end brands.

 

More air in always makes power...
https://www.ebay.com/p/?iid=2716563...dMCFdeNswodJIYCog%26srcrot%3D711-117182-37290-0%26rvr_id%3D1216231180448&chn=ps

 

im not looking to break any speed records..... would just like the truck to breath a lil easier, but thanks if i find a bag of money laying around i will give that part a thought

 

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Can't remember if you've done the tuner, CAI and muffler replacement or not:facepalm:...but those will certainly help a little and will be power-adders when you go further into your quest for power. :dance:

 

i just returned from a trip to the ga mtns from tx pulling my 12# toy hauler, i had my cc set to 67 the entire way to and fro, and i got 7mpg to and fro, i got about 225 outta a tank, i was not expecting anything greater and was happy with the number, for the amount of times i pull that trailer i will deal with the numerous fuel stops while on the road..... the trailer is definitely noticeable behind the truck but she just keeps going, and in my book that is a win, especially since i just surrendered my diesel to fca for a buy-back!!!