what size gears should i get??? - Ranger-Forums - The Ultimate Ford Ranger Resource


Drivetrain Tech General discussion of drivetrain for the Ford Ranger.

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  #1  
Old 09-24-2005
mcerwing's Avatar
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what size gears should i get???

I switched from 225/70r-14 to 30x9.5r-15. now, everyone says that i don't need to regear, but i really take that power loss coming up hills. what size should i get to regain that power?
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Old 09-24-2005
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what is the stock ratio in ur truck? and what tranny?
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  #3  
Old 09-24-2005
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3.73 or 4.10's and you should be good.
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Old 09-24-2005
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I went from the stock Wranglers to 33s and regeared from 4.10s to 4.88s... The new gears are slightly lower than it was stock, but it drives like it used to now...
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  #5  
Old 09-24-2005
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I went from 4.10 to 4.56 when I went from 31's to 35's and it helped big time.

Whatever you have not, go up one step

Have 3.55? Go to 3.73

Have 3.73? Go to 4.10

Have 4.10? Go to 4.56

and so on. Your size change is enough to feel for sure, but one step up ought to make you feel better without killing your highway mileage, I would think.
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Old 09-24-2005
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Quote:
Originally Posted by n3elz
I went from 4.10 to 4.56 when I went from 31's to 35's and it helped big time.

Whatever you have not, go up one step

Have 3.55? Go to 3.73

Have 3.73? Go to 4.10

Have 4.10? Go to 4.56

and so on. Your size change is enough to feel for sure, but one step up ought to make you feel better without killing your highway mileage, I would think.
How much did your mileage change john?
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  #7  
Old 09-24-2005
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Almost not at all (when corrected for speedo error). The loss was not from regearing, but by greater tire/ground friction with the much bigger tires.

I usually got 16 to 17. Now I get about 15 to 16. It's not great mileage, but it's scarcely that different. Acceleration seems almost the same, but I haven't actually measured it.
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  #8  
Old 09-25-2005
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thanks, but how do i tell what gears are on there now?
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  #9  
Old 09-25-2005
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There's a tag on the differential, a metal one. Let me look -- there should be a sticky on the interpretation so I don't have to type it again, lol.
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  #10  
Old 09-25-2005
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Actually, look here on The Ranger Station -- good resource for this kind of stuff:

http://www.therangerstation.com/tech_library/Axles.html

The tag will be sticking out from under one of the bolts that holds the rear cover on your rear differential.
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  #11  
Old 09-27-2005
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I need to regear, I went from stock tires to 35's, my acceleration is crap, I am thinking about going with 4.56 or maybe 4.88, I might just deal with it, i see a major mod in the future and might fix the gears then.

I am getting respectable milage though, I was getting 20MPG on a good day with the stock tires now I get about 16-17 with the 35's
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  #12  
Old 10-06-2005
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so, i finally found out that i have 3.73s on there now. i would like to switch to 4.56s, but will that slaughter my gas mileage and top speed?
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  #13  
Old 10-06-2005
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with modern overdrive trannies id say not by much. dont forget ur pulling large and heavier tires so that u cant overcome. its unpsrung weiht.
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  #14  
Old 10-06-2005
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is it hard to re-gear? Will i have to have someone install it for me?
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  #15  
Old 10-23-2005
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I'd like to bring this thread back to life. bump on the question above and whats the cost. I'm tryin to create a budget list. thanks. I'd be going from 3.73 to 4.10 or 4.56
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  #16  
Old 10-24-2005
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i got a quote from some place that said to switch to 4.10s it would be $800 bucks!!! thats way to much for me so i'm buying the gears and my friends dad is going to help install them.
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