Gears
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Joined: Oct 2010
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Gears
What gears would you recomend for 37in tires. I don't do alot of pulling I do play from time to time but I do plan on towing as soon as I get my toys and trailer. As of right now I'm not sure what gears are in the bad boy.
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Joined: Nov 2010
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From: N. IL
To find out which gears you have: https://www.ford-trucks.com/forums/1...-question.html
To find out what gears you need: Gear Ratio Calculator
Sean
To find out what gears you need: Gear Ratio Calculator
Sean
Jäger
Joined: Jan 2005
Posts: 5,491
Likes: 5
From: Northern Arizona
Get your post count to 25 and add your truck info to your signature. That will help us help you! 
As I learned on my '05, larger tires (35's) definitely affect towing performance and fuel mileage. Of course, I didn't change the gearing so that does help offset the tire size increase.
As I learned on my '05, larger tires (35's) definitely affect towing performance and fuel mileage. Of course, I didn't change the gearing so that does help offset the tire size increase.
Jäger
Joined: Jan 2005
Posts: 5,491
Likes: 5
From: Northern Arizona
Not necessarily, but it will improve towing performance depending on the increased size of the replacement tires.
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Elder User
Joined: Oct 2009
Posts: 670
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From: SoCal...LP to the LB
I like to look at this 4Lo.com :: Gear Ratio & Tire Size Chart
In my 05 4x4 Excursion 6.8 V10 it has stock 3.73 gears
In my dads 04 2wd F-250 6.8 V10 he has 4.10 gears.
we both have 285/75R16's= 32.8"
I would give anything to get some different gears to go up because the X seems very slow and it needs a lot of RPM's to get it going, and it usually needs a little more gas to keep it going. For my dads F-250 it feels very good in accelerating and can easy coast at 50mph.
I've been really lookin into a lift and 35's and would definitely consider 4.56 to 4.88...I personally would go for more power/torque than fuel economy...I mean I'm gettin 10ish mpg as it is
In my 05 4x4 Excursion 6.8 V10 it has stock 3.73 gears
In my dads 04 2wd F-250 6.8 V10 he has 4.10 gears.
we both have 285/75R16's= 32.8"
I would give anything to get some different gears to go up because the X seems very slow and it needs a lot of RPM's to get it going, and it usually needs a little more gas to keep it going. For my dads F-250 it feels very good in accelerating and can easy coast at 50mph.
I've been really lookin into a lift and 35's and would definitely consider 4.56 to 4.88...I personally would go for more power/torque than fuel economy...I mean I'm gettin 10ish mpg as it is
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