Axle code help - Ranger-Forums - The Ultimate Ford Ranger Resource


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Old 09-02-2015
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Axle code help

Wondering if I can run any other axle code for my ranger it has axle code 87 in it right now is there any other axle I can run that will be a direct swap I'm tight on money and doing the junk yard hunt any help would be awesome thanks guys
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Old 09-02-2015
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87 is an OPEN 7.5" with 4.10 ratio

Are you SURE it is 87?
Because ALL Ford Rangers from 1990 to 2011 with 4.0L engine got 8.8" rear axles
The word ALL from Ford probably only means "most", lol

4.10 gives good low end power for loads and trailers, also better for running taller tires.

OPEN means only 1 rear wheel will get power, which is odd, 4x4s almost always came with L/S, limited slip, rear axle, front axle is OPEN.

3.73 ratio is what most Rangers got, less pulling power but lower RPM at highway speeds so slightly better MPG, but really depends on driver .

You can get any 7.5" ring and pinion set to swap in, BUT(big but) you have to do BOTH front and rear, because of the 4x4 part, can't just do the rear unless you drop(remove) the front drive shaft.

List of the AXLE codes here: Ford 7.5 & 8.8 Inch Axle Tag & Door Codes
For when you are at the junk yard

Last edited by RonD; 09-02-2015 at 09:31 PM.
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Old 09-02-2015
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Yes it's a 99 it has the 3.0 not the 4.0 the door tag says 87 there's no longer a tag on the rear axle if I changed the 7.5 that's in it now for the 8.8 which I believe is axle code 87 would it swap it there both open 4.10
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Old 09-02-2015
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Correction the axle code is 97 for the 8.8
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Old 09-02-2015
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Yes. As long as you are keeping the same ratio, you'll be fine as far as 4x4 goes. The 7.5 and 8.8 bolt up the same as far as springs go. I'm not sure about the yoke being the same size for the u joint or not.
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Old 09-02-2015
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+1 ^^^, yes 8.8" from Ranger is straight swap, from 8.8" from Explorer requires some changes

1990-1992 Ford Ranger 8.8-Inch Axle - 56-1/2 inches wide

1993-2009 Ford Ranger 8.8-inch Axle - 58-1/2 inches wide

1993-2009 Ford Ranger 7.5-inch Axle - 58-1/2 inches wide


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I am: Cole Decordova
Join Date: Sep 2015
Location: Oahu, hi
Vehicle: 1999 Ford Ranger
Drive Type: 4x4
Engine: 4.0

^^ is what lead me astray , the "Engine: 4.0", typo I guess

Last edited by RonD; 09-02-2015 at 10:37 PM.
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