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Regearing for 35s

David solar

By David solar
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David solar Enthusiast

David solar

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Posted

Hey guys I’ve got a 2014 GMC Sierra 2wd 4.3 v6 on a 7inch lift 22x12s and 35s the trucks got 3.23 gears in it and when I bumped up to 35s from 33s it seems like it is always constantly searching for gears on the Highway or above 50mph I get around 13 mpg and I would like to retain that or get better if possible and I’m trying to decide wether regearing the truck would be worth the money and also what gears to go to If I get it done if 3.73 or 4.10s would be better I would like to retain as much gas mileage as possible but not have the truck struggling 24/7 when it hits a hill it just sucks the life out of it or on the highway trying to maintain a decent speed I have a cold air Intake exhaust and Diablo tuner please lmk what y’all think438e023f7bec8ca1d68c355f4fe6fe65.jpg

 

 

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m3n00b Enthusiast

m3n00b

Posted
Posted (edited)

I think the consensus on these trucks is 4.56 when running 35s.  I have the 6.2/3.23/ 8spd and haven't regeared yet and I'm not really sure I need to.  The truck hauls ass still.

Edited by m3n00b
dieselfan1 Senior Enthusiast

dieselfan1

Posted
Posted

Truck looks good Dave.
If you can afford it do it.
The v6 has to be struggling with those tires.
Does the tuner help any?


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David solar Enthusiast

David solar

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  • Author
Posted
I think the consensus on these trucks is 4.56 when running 35s.  I have the 6.2/3.23/ 8spd and haven't regeared yet and I'm not really sure I need to.  The truck hauls ass still.

My problem is that motor I’m just trying to find ways to get it back to how it was so you would go with 4.56 gears?


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David solar Enthusiast

David solar

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Truck looks good Dave.
If you can afford it do it.
The v6 has to be struggling with those tires.
Does the tuner help any?


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Thanks man and yeah the v6 isn’t bad but it just can’t handle those tires at high speed and hold It the tuner did help a ton I noticed a big difference


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David solar Enthusiast

David solar

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I wouldn't put any more money into that truck I would buy something more appropriate. You'll be lucky if you can break even on a sale.

I know I’m not going to break even with this but this is the truck I could afford at the time and now I’ve got it so close to being payed off it it would be stupid to get rid of it I’m gonna run it till it blows


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Grumpy Bear Senior Enthusiast

Grumpy Bear

Posted
Posted
8 hours ago, David solar said:

 

Hey guys I’ve got a 2014 GMC Sierra 2wd 4.3 v6 on a 7inch lift 22x12s and 35s the trucks got 3.23 gears in it and when I bumped up to 35s from 33s it seems like it is always constantly searching for gears on the Highway or above 50mph I get around 13 mpg and I would like to retain that or get better if possible and I’m trying to decide wether regearing the truck would be worth the money and also what gears to go to If I get it done if 3.73 or 4.10s would be better I would like to retain as much gas mileage as possible but not have the truck struggling 24/7 when it hits a hill it just sucks the life out of it or on the highway trying to maintain a decent speed I have a cold air Intake exhaust and Diablo tuner please lmk what y’all think

 

 

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Try this. Get out on the open Interstate/Highway and run in M5. Put her in cruise control and observe. This little exercise will let you know what it would be like to run with a 4.10:1 diff in high gear. See how much help that step is. A test that cost you nothing but time. 

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dieselfan1 Senior Enthusiast

dieselfan1

Posted
Posted
I wouldn't put any more money into that truck I would buy something more appropriate. You'll be lucky if you can break even on a sale.
Don't be so negative Timmy[emoji107]

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David solar Enthusiast

David solar

Posted
  • Author
Posted
Try this. Get out on the open Interstate/Highway and run in M5. Put her in cruise control and observe. This little exercise will let you know what it would be like to run with a 4.10:1 diff in high gear. See how much help that step is. A test that cost you nothing but time. 

Thanks man I will do that and my biggest issue is the truck is always and I means always Reving up in the rpms to move like jumping the Rpms it will never just cruise and I can give it a little without it jumping in rpms to try to move


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  • Like 1
CamGTP Senior Enthusiast

CamGTP

Posted
Posted (edited)

Needs 4.10's at a minimum for 35's.

 

2WD makes it's easy and costs way less than if you had a 4X4. You need to tune for that as well. It will adjust the shift points for the transmission.

Edited by CamGTP
It's Tim Senior Enthusiast

It's Tim

Posted
Posted
18 hours ago, dieselfan1 said:

Don't be so negative Timmyemoji107.png

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A patient complains to the doctor: "Doc my thumb hurts when I hit it with the hammer"

Doctors response "Stop hitting your thumb with the hammer."

spacer.png

  • 4 years later...
Matthewj New Member

Matthewj

Posted
Posted
On 11/17/2020 at 6:12 PM, CamGTP said:

Needs 4.10's at a minimum for 35's.

 

2WD makes it's easy and costs way less than if you had a 4X4. You need to tune for that as well. It will adjust the shift points for the transmission.

I’m having same issue but I’m 4wd but my cv axles are pulled out will I still need tune

BatildeDesrosiers New Member

BatildeDesrosiers

Posted
Posted
On 11/17/2020 at 7:41 AM, David solar said:

 

Hey guys I’ve got a 2014 GMC Sierra 2wd 4.3 v6 on a 7inch lift 22x12s and 35s the trucks got 3.23 gears in it and when I bumped up to 35s from 33s it seems like it is always constantly searching for gears on the Highway or above 50mph I get around 13 mpg and I would like to retain that or get better if possible and I’m trying to decide wether regearing the truck would be worth the money and also what gears to go to If I get it done if 3.73 or 4.10s would be better I would like to retain as much gas mileage as possible but not have the truck struggling 24/7 when it hits a hill it just sucks the life out of it or on the highway trying to maintain a decent speed I have a cold air Intake exhaust and Diablo tuner please lmk what y’all think438e023f7bec8ca1d68c355f4fe6fe65.jpg

 

 

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If you can afford it do it.
The v6 has to be struggling with those tires.

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