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Drivetrain Tech General discussion of drivetrain for the Ford Ranger.

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Old 01-29-2011
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4.62 gears?

According to http://www.rocky-road.com/calculator.html my ideal gear ratio is
4.63's.Stock tire diameter was 27.4 and stock gears 4.10's, Currently running 31's.
Long and behold i found 4.62's but im iffy about running a odd ball sized gear due to the fact tunners jump from 4.56's to 4.88's.

after doing some research,

31's on Stock 4.10's=469 rpm's less than stock
4.56's=152 rpm's less than stock
4.62's=almost dead on stock rpm's
4.88's=70 more rpm's than stock

99.9% of my driving is city im thinking about going 4.88's should bump up my city mpg's a bit.

what do yall think?

Last edited by silverfox; 01-30-2011 at 12:57 AM.
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Old 01-29-2011
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holey crap.. id just stick with 4.10's but then again i got a 4 liter.
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Old 01-29-2011
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regearing is extremely expensive.. as im in the middle of finding out right now. so unless you really need to do it, dont waste your money!
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Old 01-29-2011
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I'm looking at $650 gears,install kit and labor. I'm lucky in the fact I only have one axle to regear. I'm thinking if I run 4.88's and its to low ill do a spindle lift and run 33's.

Last edited by silverfox; 01-30-2011 at 12:35 AM.
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Old 01-29-2011
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4.88's on 31's? What engine do you have? Most guys run 4.88's with their 35's, 4.56's with their 33's, etc.
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Old 01-29-2011
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He has a 4 banger. Thats why he needs the gears that low.
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Old 01-29-2011
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2.3l,auto trans,4.10's 27.4 stock tire diameter.Currently on 31's which are 3.6 inches larger in diameter. 4x4's go from 31's to 35's with 4.10's stock to 4.88's, 4 inches larger diameter.

Last edited by silverfox; 01-30-2011 at 12:38 AM.
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Old 01-29-2011
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Quote:
Originally Posted by RLong31 View Post
4.88's on 31's? What engine do you have? Most guys run 4.88's with their 35's, 4.56's with their 33's, etc.
I was going to run 4.56's with 31's with a 3.0 Ranger.

I'd run 4.56's or 4.88's. Definitely 4.88's if you plan on stepping up your tire size. Maybe even 5.13's.
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Old 01-29-2011
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I think it also depends on the axle size in the rear how low you can gear it... I could be wrong. But a 7.5 can't be geared as low... Not sure what you have. 8.8 I think you can only go to 4.88 if I'm not mistaken.
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Old 01-29-2011
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I just swapped in a 8.8. They make some crazy ratios for it I saw 6.14's earlyer.
4x4 guys are maxed at 4.88's because of the d-35 in the front.

Last edited by silverfox; 01-30-2011 at 12:39 AM.
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Old 01-30-2011
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List of gears made by Superior Gear.

Ford 8.8:3.00,3.08,3.27, 3.31, 3.55, 3.73, 3.80, 3.90, 4.10, 4.30, 4.56, 4.62, 4.88, 5.13's 5.14, 5.43, 5.71, and 6.14

Ford 7.5:3.08, 3.27, 3.45, 3.72, 3.73, 4.10, 4.30, 4.56, and 5.13's

Last edited by silverfox; 01-30-2011 at 12:39 AM.
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Old 01-31-2011
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Ok i redid my math with this handle little calculator
http://www.superioraxlegear.com/calc...re-height.html

When upgrading to 31 inch Tires
Stock Gears 4.10=266 Less Rpm’s Then Stock
Regearing to 4.56's=39 Less Rpm's Then Stock
Regearing to 4.62=10 Less Rpm’s Then Stock
Regearing to 4.88's=119 More Rpm's Then Stock
Regearing to 5.13's=242 More Rpm's Than Stock

When upgrading to 32 inch Tires
Stock Gears 4.10=329 Less Rpm’s Then Stock
Regearing to 4.56's=109 Rpm's Less Than Stock
Regearing to 4.62=81 Less Rpm’s Then Stock
Regearing to 4.88's=43 Rpm's More Than Stock
Regearing to 5.13's=163 Rpm's More Than Stock

When upgrading to 33 inch Tires
Stock Gears 4.10=389 Less Rpm’s Then Stock
Regearing to 4.56's=175 Rpm's Less Than Stock
Regearing to 4.62=148 Less Rpm’s Then Stock
Regearing to 4.88's=27 Rpm's Less Than Stock
Regearing to 5.13's=163 Rpm's More Than Stock
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