Changing gears!

gt4660 · June 1, 2017

After much debate I decided to have my truck regeared from the 3.08s to 4.10s. I have a 2014 CC 4x4 with the 5.3 and towing a 12 ft trailer with my can am maverick knocks me down to 12 mpgs. I will update after it is done and broken in.

JoeTrahnier · June 1, 2017

Following. I get 12 mpg with out towing

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tom4221 · June 1, 2017

What is the approximate cost to regear your 4wd to 4.10s?

Was thinking about going that route myself.

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gt4660 · June 1, 2017

What is the approximate cost to regear your 4wd to 4.10s?

Was thinking about going that route myself.

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Parts are $1238 from east coast gear supply. Install 800 to 1000. depending obn your area or shop.

tom4221 · June 1, 2017

Thanks, following to see how you make out. Good luck!

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ChevyRoofer · June 1, 2017

After much debate I decided to have my truck regeared from the 3.08s to 4.10s. I have a 2014 CC 4x4 with the 5.3 and towing a 12 ft trailer with my can am maverick knocks me down to 12 mpgs. I will update after it is done and broken in.

Do you have 35s or stock setup?

gt4660 · June 1, 2017

leveled with 285/70/17 with a diablo tuner

aseibel · June 1, 2017

After much debate I decided to have my truck regeared from the 3.08s to 4.10s. I have a 2014 CC 4x4 with the 5.3 and towing a 12 ft trailer with my can am maverick knocks me down to 12 mpgs. I will update after it is done and broken in.

what mpg do you think you are going to get? what mpg do you want to get?

I'd be willing to bet you won't gain any mileage, in fact you would lose a little. Your engine will just be running higher RPM's on the highway. (more torque)

I wouldn't spend $2000 to re-gear a truck just to pull a toy a few weekends a year. Pulling that can-am on an open trailer is just creating a ton of drag, and I'm betting you are trying to go 75+ mpg. What is your fuel mileage at the same speed with no trailer?

gt4660 · June 1, 2017

what mpg do you think you are going to get? what mpg do you want to get?

I'd be willing to bet you won't gain any mileage, in fact you would lose a little. Your engine will just be running higher RPM's on the highway. (more torque)

I wouldn't spend $2000 to re-gear a truck just to pull a toy a few weekends a year. Pulling that can-am on an open trailer is just creating a ton of drag, and I'm betting you are trying to go 75+ mpg. What is your fuel mileage at the same speed with no trailer?

1. I am doubting I will gain much if any

2. I want more tourqe, it is struggling in tow mode with the light load.

3. i tow more than a few weekends a year. more like 2 or 3 times a month. Also tow other things max load about 6k. I have added airbags and brake controller. At highway speeds normally 19-18.5 on longer trips.

4. You are making a lot of assumptions on what I do or how I drive. I noticed several threads about this topic but few actually doing it. Intially the cost to change was 3.5 to 4 k. Manufactuers have new products and the price has dropped. I will make an assumption people will be interested in how it goes.

aseibel · June 1, 2017

1. I am doubting I will gain much if any

2. I want more tourqe, it is struggling in tow mode with the light load.

3. i tow more than a few weekends a year. more like 2 or 3 times a month. Also tow other things max load about 6k. I have added airbags and brake controller. At highway speeds normally 19-18.5 on longer trips.

4. You are making a lot of assumptions on what I do or how I drive. I noticed several threads about this topic but few actually doing it. Intially the cost to change was 3.5 to 4 k. Manufactuers have new products and the price has dropped. I will make an assumption people will be interested in how it goes.

Thanks for the info. I am also interested in how it will turn out. your original message seemed to imply you were doing this solely for mpgs. I agree that your current set-up is struggling in the torque department. the sales guy should have told you when you bought it that you won't want to tow with a 3.08.

I just wonder how much money & effort is worth putting into your old truck when you could trade-in and get a new one stock to pull your trailer much better. Plus the new trucks have the 8-sp tranny. Just my 2 cents, but I would shop around and get prices on new trucks with yours as a trade in and compare to what you are thinking about spending here.

either way, good luck.

gt4660 · June 1, 2017

Thanks.i really like the truck. I debated getting a new one or going back to diesel truck. I oug ht it used with only 9k miles last year. I plan on keeping it and so the upgraded gears will be worth it for me

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gt4660 · June 3, 2017

Also adding a Yukon duragrip limited slip in the rear. Parts ordered and waiting on them to come in.

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GRN69CHV · June 4, 2017

Also adding a Yukon duragrip limited slip in the rear. Parts ordered and waiting on them to come in.

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Was going to ask if you were just planning on running ring gear spacer with the stock 3.08 carrier until I got to the bottom of the thread and saw you added a replacement carrier to the parts list. I really am surprised Yukon (who seems to be taking a lead with the GM 9.5 12 bolt) hasn't stepped forward and added thick ring gear sets in few ratios (ie 3.42, 3.73 & 4.10). FWIW, I recently had to tow my 12' utility trailer with a full load of stone, measured it at the scale on way out at 3050# (just over the limit of single axle with no brakes). Didn't tow real fast or real far but was very surprised at how easy it handled it. Seemed like it just ran in 4th most of the way at the speeds I was traveling.

gt4660 · June 4, 2017

East coast gear supply has stepped up to the plate on gears for 2014 trucks. The first time I priced changing it was about 3500. Now with the lsd I am going to be under 2500.

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