Question about 1991 Ford Ranger Supercab

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Trying to identify rear differential on 87 ford ranger 7.5 or 8.0 need to replace since teeth from gears were in case.

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Measure across the differential case from one side to the other side. It should be 7.5 inches if it doesn't have limited slip.

Posted on Jan 22, 2009

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You most likely have the 7.5, as that was the stock rear axle on older rangers.
There should be a tag on the differential cover bolt that has the gear ratio and differential size on it.

Posted on Jan 04, 2009

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I have a 98 Ford E150 conv. van need to replace complete rear end need to figure out which one I have and what yr will interchange and if a truck rear end work or only a van


Hello Brenda...you will find some identifying information on the actual real axle casing. Stamped numbers, I.D. tag or you can search your VIN (Vehicle Identification Number) or make, model year and series on the internet to see what options were available for rear end gearing ratio's.

Yes you should stick with a similar or identical rear end to ensure proper mounting bracket alignment and gear ratio choices. Dana Model 60, 70 & 80 Axles are not internally identical.

Looks like the standard differential carrier for the E150 is a 8.8" (*10 bolt). Standard, Includes Spider gears, 31 spline, 7/8" shaft.

* Ten Bolt - The rear end cover plate contains 10 mounting plate bolt holes.

May 05, 2016 | Ford Cars & Trucks

1 Answer

2005 Ford ranger fx4 transfer case is banging like chain is jumping, replaced transfer case still bangs. Cvc joints ok, differentials ok, rear shaft ok front shaft seems ok. Shift motor seems ok!


If this is a new vehicle to you someone may have put the wrong gear in one end of the vehicle. Also check tire and rims that must be the same front and rear or the travel per revolution of each axle must be the same. Go to discounttire,com and use their tools to find the circumference of the tires.

Jan 25, 2016 | Ford Cars & Trucks

1 Answer

When I place my 2002 ford ranger in 4 wheel drive Hi, the passenger side rear tire acts like the brake is on for a moment then not then again as the truck is moving?


Sounds like a tooth missing from the rear differential gear that drives that wheel....good luck...it's expensive to replace because the axle needs to be pulled.

Jan 13, 2013 | 1989 Ford Ranger

1 Answer

Have a loud grinding noise in the rear middle between the 2 wheels of my Silverado 2001 after the 4 wheel drive stopped working back in December if that is even related. The only time it does not make the...


Remove the cover on the rear axle Inside you will see the differential gears. If the gears are damaged or there is a large amount of metal flakes in the lube, likely the differential has failed. Generally it is far cheaper and easier to replace it with a scrapyard unit. Replacing the gear set is not a bolt in procedure and takes special tools and knowledge..To replace it end to end, all you need is a decent set of tools, some common sense and a manual if you are a novice or unsure of yourself. Only thing you need is to match the gear ratio to the front one. You can either identify that from a metal tag on the cover or by counting teeth on the ring gear and pinion gears. Ring divided by pinion=ratio.
If the transfer case has been diagnosed as bad, make sure the noise isn't being transmitted through the driveshaft. Verify diff condition by looking!!

Jul 13, 2011 | 2001 Chevrolet Silverado 1500

1 Answer

Not a problem as much as an answer. Are both wheels rear wheels engaged at all times on my 4x4 87 ranger?


this is a rear wheel drive vehicle and as such the rear wheels are always engaged.when in 4 wheel drive the transfer case in gages and the front differential connects and is engaged.unless the 4 wheel drive is engaged the transfer case just free wheels.

Apr 27, 2011 | 1987 Ford Ranger

1 Answer

Spider gears shot


No you can replace the gears by removing the differential cover. Remove the gear pin and slightly pull the axles out of the gears. unbolt the drive shaft from the differential first you will then be able to move the gears so you can get at the pins.

Jun 01, 2009 | 1996 Ford Explorer

1 Answer

Major bind in 4 wheel drive


Yuo deifinitely have to get rid of one differential to match the other. I would change the rear diff as the gearing in that one will give you really poor mileage... additionally welded spider gears (poor mans positraction) make cornering a nightmare (the outside wheel must turn faster than the inner one on turns, which is why no one uses "spool" type differentials on anything but drag race vehicles (because they only go in straight lines).
As far as which Dana unit you are supposed to have, YOU MUST MATCH THE EXACT GEAR RATIO TO THE FRONT UNIT or, it will destroy the transfer case!!! You could even modify a chevy or ford diff to fit under there, but the ratio match has to be exact!!! To find ratio, count the ring gear teeth and the pinion gear teeth. I don't remember the formula but you need to establish a ratio from these two #s.(divide the ring gear# by the pinion#??? answer is expressed as (answer:1 such as 3.23:1))

Feb 01, 2009 | 1984 Jeep CJ7

1 Answer

Torque specs 7.5 inch rear axle 96 ford ranger


Differential bearing caps 70-85 ft lb
Ring gear bolts 70-85 ft lb
Pinion bearing preload if using original bearings 8-14 lb-in, if installing new bearings 16-28 lb-in

Jan 30, 2009 | 1996 Ford Ranger SuperCab

1 Answer

Rear gear ratio for 93 toyota 4x4 pickup 5 speed.


The C/Tr: C refers to the colour of the vehicle Tr refers to the interior colour A/TM is your transmission type. None of those numbers identify the rear end ratio.

What you need to do: Since you have to replace the rear end, yank it out. Examine the ring & pinion gears on the differential carrier. Mark on each a starting point, and count the teeth on both the ring & pinion gears. Now, after you have both totals of teeth, divide the # of teeth on the pinion by the number of teeth on the ring gear. Example: 12 teeth on the pinion, 46 teeth on the ring
12/46 = 3.83 ratio

Aug 22, 2008 | 1993 Toyota Pickup

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