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What rear axle ratio does a 1987 ford F150 4WHD have?

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You have a tag on the driver door or door post with an axle code.

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1996 codes. don't have earlier. may be the same though.
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Posted on Apr 20, 2009

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1 Answer

1987. What axle ratio does it have?


Hey they come with a variety of ratios so you have to look at the sheet of paper that lists the build of the vehicle. Also if you take the serial number to a dealer they should be able to tell you

Nov 22, 2015 | Ford F-250 Cars & Trucks

1 Answer

Will a 96 and a 97 gmc rear axles interchange and how do I find the gear ratio


If the axles are from the same size vehicles the answer is PROBABLY yes.
Differential ratio can be calculated by counting the number of teeth on the crown gear and on the pinion gear. Divide the big number by the small number, that's your ratio (to 1)

Aug 02, 2015 | GMC Cars & Trucks

1 Answer

I had a 1997 Ford Crown Victoria with An H9 rear axle code. I want to know what rear axle code is comparable to the H9 for a Mercury Grand Marquis?


reading forums on this reveals that the h9 is a 3.55 limited slip diff mainly used in f150 fords. However all that is immaterial as what you are looking for is a diff centre that is 3.55 ratio that will fit in your housing . The same housing will use the both LSD and normal diffs as the LSD was an option offered for off road vehicles or vehicles operating in bad road conditions

Sep 18, 2014 | 1997 Ford Crown Victoria

1 Answer

What years and makes of fords are interchangable with the rear end on a 1990 ford f-150


Depending on which rear axle assembly your 1990 F150 has....

Please indicate which is most applicable to your vehicles current axle assmembly.


ABS, 2.73 ratio
ABS, 3.08 ratio
ABS, 3.55 ratio
ABS, 4.10 ratio
w/o ABS; (Canada mkt), 2.73 ratio
w/o ABS; (Canada mkt), 3.08 ratio
w/o ABS; (Canada mkt), 3.55 ratio
w/o ABS; (Canada mkt), 4.10 ratio

Sep 28, 2011 | Cars & Trucks

2 Answers

Want to change gears in rear end for posi traction in a 98 gmc25000 is this possible?


It is possible, you just have to know what gear ratio you have in your Sierra. I had issues with my son's rear differential and did the Salvage Yard and picked one up for $250.00 with less then 45,000 miles. Remember new cars end up at Salvage Yards also.

Here are the Pro code for the rear ends to your Sierra and you can match one up at a Salvage Yard.
GQ1 -- AXLE REAR, STD RATIO
GT4 -- AXLE REAR, 3.73 RATIO
GT5 -- AXLE REAR, 4.10 RATIO
GU4 -- AXLE REAR, 3.08 RATIO
GU5 -- AXLE REAR, 3.23 RATIO
GU6 -- AXLE REAR, 3.42 RATIO
G80 -- AXLE REAR, LIMITED SLIP (POSI TRACTION)

HC4 -- AXLE REAR, 4.56 RATIO

Open Your glove box and look inside it. Should be a list of codes on the bottom.
Example: GU6 G80 According to that, you'll have a 3.42 posi

Good luck and keep me posted and call around Salvage Yards, there prices will differ from one to the next salvage yard and don't ask them for a posi rear end. The cost will you more, just search all the SUV's and look at the pro codes in the glove box. Hunt, most awd system SUV will have the G80 rear end.

Good luck and keep me posted.

Jan 10, 2010 | 1993 GMC Sierra K1500

1 Answer

Oem gear ratio for a 1997 ford f 150


look on the door jamb sticker for the axle code and compare it to the chart. please rate as solved if this helps.

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The front and rear axle codes are as follows:
  • Rear axle ratio codes (A) are:
    • 18 — 3.08.
    • 19 — 3.55.
    • 26 — 3.73.
    • 27 — 3.31.
    • H9 — 3.55 Limited slip.
    • B6 — 3.73 Limited Slip.
  • Front axle (B) code.

May 25, 2009 | 1998 Ford Explorer

1 Answer

I was just wondering if my 2001 chevy blazer has a rear lockin differental??


They were an option but you can find out by looking in your glove box's GM RPO Codes. It's the sicker on the inside of the glove box with numbers and letter.
Here are some listing on the gear ratio you may have,
U4: Rear Axle, 3.08 Ratio             U5: Rear Axle, 3.23 Ratio U6: Rear Axle, 3.42 Ratio 
If it is a GU the G stands for the rear Locking Differential.
Good luck and hope this helps.

May 04, 2009 | 2001 Chevrolet Blazer

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