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Currie 1979-93 Fox Mustang 9 Inch Rear Axle

Currie 1979-93 Fox Mustang 9 Inch Rear Axle

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Q & A (3)

What's in the Box

Info

Now you can have all the strength and serviceability benefits that the Ford 9" offers underneath your Fox Body Mustang. Currie Crate Rearends are built using the stock overall width, pinion offest, and mounting points of your original rear axle housing, making it a 100% bolt-in upgrade.

  • All new 9-Plus heavy duty housing
  • Replacement fit for 1979-93 Fox-Body chassis
  • Urethane upper control arm bushings are installed
  • 31 spline performance axle shafts
  • 59-1/4" width
  • Torino-style late model large bearing housing ends
  • Third member studs installed
  • Axles drilled for 5 on 4-1/2" wheel bolt pattern
  • 1/2"-20 wheel studs pressed into axles
  • 1/4” thick heavy duty bearing retainer plates
  • Tapered Timken style wheel bearings pressed onto axle

Note: Works with Speedway rear disc brake kits, 11" Ford Explorer disc brakes, and Wilwood disc brakes. Third member sold separately.

How to Measure Your Housing Tech Tip (Link)

To learn more about Currie's 9+ rearends, check out these Frequently Asked Questions on 9-Plus Housing (Link) 

Installation Notes:

When installing new axles in rearends with posi traction differentials, be sure to install the driver's side axle first to keep the splines properly aligned.  Failure to do so may move the two splined gears out of alignment, and it may be difficult to install the driver's side axle properly if the passenger side axle is already installed.

If installation of passenger side axle is done first it may require two people when installing the driver's side axle, with both parties rotating reach axle until splines are in line and the driver's side axle fully sides into the housing.

To ensure you get the most out of your new 9 Inch components, Currie recommends that you perform a proper break-in process:

  • Use a name brand mineral-based gear oil, preferably 85w140 (Extremely high quality synthetic oils may be used once break-in process has been successfully performed)
  • Place vehicle on jack stands and let the rearend spin while the vehicle idles - run transmission in both forward and reverse periodically throughout the process
  • Continue to run the rearend until the pinion gets hot (place hand on bottom of the differential housing to verify this)
  • Proper break-in allows:
    • The ability to install new axles and hit the track the same day without worry
    • Extended life for rearend components
    • Keeps the quality and life of your gear oil

Note: If you find that your rearend is running somewhat "tight" be sure to add Currie's 9+ Friction Modifier to "loosen up".  If a more aggressive performance is desired, Friction Modifier is not needed.

 

Customer Reviews

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Product Q&A

3 questions : 3 answers

1 answers

can this rearend be used in 94-04 mustang chassis? Like to forego the 8.8 in my high mileage 1998 GT and would consider this the last rearend upgrade needed.

mountaintop
Fort Collins, CO, USA
April 29, 2014

can this rearend be used in 94-04 mustang chassis? Like to forego the 8.8 in my high mileage 1998 GT and would consider this the last rearend upgrade needed.

Answers

April 29, 2014
EricM
No this will not fit a 94 to 04 Mustang. Sorry I do not have the correct rear end for your application.
1 answers

does the 9in rear axle for 73-93mustang have a centered pinion ? want to use this rear in a shelby kit car

befrog
Port St. Lucie, FL, USA
January 15, 2014

does the 9in rear axle for 73-93mustang have a centered pinion ? want to use this rear in a shelby kit car

Answers

January 16, 2014
EricM
This rear end housing has the pumpkin centered which makes the pinion .94" offset.
1 answers

What kinda power will this rearend hold ? Looking at this for a 79 fairmont build 408 windsor on 2 stage fogger

john
ks
June 17, 2015

What kinda power will this rearend hold ? Looking at this for a 79 fairmont build 408 windsor on 2 stage fogger

Answers

June 18, 2015
Eric
Expert
Sorry these rear ends do not have a horsepower rating. The application it is used in will be more critical than the power of the engine. For drag racing purposes this rear end (especially the axles) may not be adequate. For the average street beast with an 8" to 10" wide tire it should be just fine for you.
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