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9 Inch Ford Rear Axle Option

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9 Inch Ford Rear Axle Option
9 Inch Ford Rear Axle Option
9 Inch Ford Rear Axle Option
9 Inch Ford Rear Axle Option
9 Inch Ford Rear Axle Option
Product Video
9 Inch Ford Rear Axle Option

Click image to enlarge

Watch the videos below to learn more about Speedway Motors T-Bucket assembly and the completed project.

Please NOTE the following about this product:

  • This item is sold as a kit.



Q & A

What's in the Box

This all-new 9" Ford housing features big bearing ends (bearings included) and lifetime warranty 31-spline axles with dual bolt patterns (5 x 4.5" and 5 x 4.75"). Center section NOT included.

Note: When this item is ordered with a T-Bucket frame kit, the housing will be shipped with all necessary suspension brackets welded to it, according to the chassis you order.

Customer Reviews

Rated 5 out of 5 by 1 reviewers.
1 reviews
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1 Star

Billy the kid
Verified Purchaser
Verified Reviewer
New Boston, NH

1st rate.

May 22, 2015
The craftsmanship is simply awesome. The welds are perfect. The fit to my ride is excellent.
Yes, I recommend this product.
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Page 1 of 1

Product Q&A

5 questions : 5 answers

1 answers

What is the WMS measurement? Flange measurement of 56" is the axle housing's flange to flange, right? I want to see how the overall measurements match up to the 35 Chevy I will be building soon

Sun Valley, Los Angeles, CA, USA
February 25, 2015

What is the WMS measurement? Flange measurement of 56" is the axle housing's flange to flange, right? I want to see how the overall measurements match up to the 35 Chevy I will be building soon


February 25, 2015
The rear end included in this rear axle option is 56" from axle flange to axle flange (can also be described as wheel mount surface to wheel mount surface).
1 answers

The description says center section not included. The pumpkin is there, just not the third member, right?

Las Vegas, NV, USA
November 07, 2014

The description says center section not included. The pumpkin is there, just not the third member, right?


November 07, 2014
It depends on your definition of the "pumpkin". Sometimes the third member is also called the "pumpkin". What you see in the pictures is what you get. The rear end housing and the axles are included. You will need to purchase a third member separately such as part number 91048345.
1 answers

If I order this with a 32 lo boy kit, will you weld on the brackets?

Portland, OR, USA
August 17, 2013

If I order this with a 32 lo boy kit, will you weld on the brackets?


August 19, 2013
If the rear end option number 715700 is ordered at the same time as the ’32 Lo-Boy roadster the rear end brackets are welded on free of charge to help our customers .
1 answers

Has this been setup with the pinion centered?

Tauranga, New Zealand
September 27, 2012

Has this been setup with the pinion centered?


September 28, 2012
These rear ends have centered housing for better use with triangulated four link. The pinion is offset from center 2 ¼ to 2 3/8”.
1 answers

What is the actual length from the outside of the flanges in inches?

Fontana, Ca.
January 16, 2011

What is the actual length from the outside of the flanges in inches?


January 19, 2011
Jeremy O
Herb, the measurement from flange to flange is 56".
Page 1 of 1

You may also be interested in:

Currie 9 Inch Ford Rear Axle Kit
(Part #91045100)

Currie's Universal Hot Rod Ford 9" kit includes a brand new 56" housing, lifetime warranty 31 spline axles, new axle bearings and seals, and new style big Ford ends. 

  • Housing is 56" from axle face to axle face
  • Axles drilled for 5 x 4-1/2" Ford/Mopar and 5 x 4-3/4" Chevy/GM bolt patterns
  • Includes wheel studs, 1/2"-20 Ford and 7/16"-20 Chevy
  • 1/4" heavy duty late model large bearing style retainer plates

Note: Axle bearing does not come pressed onto the axle shaft, and wheel studs are not installed. Third member not included.

Currie Rear Axle Installation Instructions

How to Measure Your Housing Tech Tip (Link)

Need a certain length not found on our site?  Check out Currie's 9+ Rearend Calculator to have specially sized axles or rearend housings made for your specific application.  Custom orders will be built and processed directly through Currie Enterprizes and shipped to your door. For ease of ordering, please refer to Currie's Dimension Diagram

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.



Ford 9 Inch Posi Traction Third Member Assembly
(Part #91048345)

If you’re looking for a complete third member for your Ford 9-inch rear end housing, but want the added performance of a limited slip differential, Speedway Motors now offers you a 9" Ford street 3rd member for your street rod. We start with reclaimed, genuine Ford 9-inch carrier housings and then clean and inspect them prior to installing all-new bearings, seals, a 1310-series yoke, and your choice of ring-and-pinion gears. The 1310-series yoke is the correct size for many Ford applications with cups 1-1/16 inch in outside diameter and a span of 3-7/32 inch across.

These Ford 9 inch third member assemblies feature a Richmond Powertrax Grip Pro differential available in 28 or 31 spline axle shaft configurations. This clutch-type differential is perfect for light-to-medium weight street vehicles where one wants posi-action and long clutch life, without the adverse handling effects or noise of a full locker. When coasting around turns, the clutches are disengaged to extend clutch life. When accelerating in a straight line on dry pavement, the clutches engage, sending equal power to both wheels for maximum traction. This makes them ideal for street use, with the occasional trip to the drag strip as well.

All third members are assembled by our team of professionals and are delivered to you in a handy plastic carrying case, for an overall value that can’t be beat

Available in your choice of 3.50, 3.70, 3.89, 4.11 or 4.56 gear ratio.

Gear lube recommendations :

  • 910-44090 - for street and every day driving under normal conditions
  • 910-44140 -  for extreme duty, towing, or very hot climates

Instructions (PDF)

Small Block Ford and C4 Auto Trans Mount Option for T Frame Kit
(Part #715600)
Small Block Chevy and TH350 Auto Trans Mount Option For T Frame Kit
(Part #715500)
Ford Racing 11 Inch Drum Brake Kit, 2-1/2 Offset
(Part #91031937)
                        We offer these rear drum brake kits for popular 9" Ford rear axles. Each kit has new 11" x 2-1/4" drums, backing plates, shoes, wheel cylinders, springs, emergency brake arm and hardware.  

Fits New style Big Ford housing with 2-1/2" axle offset and 3.15" axle bearing. Drums drilled for 5 on 4-1/2" bolt pattern.

Axle Flange Identification Chart (Link)

Item Details

New Style Big Ford
Garage Sale - Ford Racing Rear Disc Kit w/ E-Brake
(Part #91031998)

Looking for a low cost way to add rear disc brakes to your Ford  8.8" or 9" equipped hot rod, without searching the junk yards? Look no further. This Ford Racing rear disc brake kit includes OE quality single-piston calipers, 11.8" vented rotors, E-coated caliper mounting bracket, and all mounting components. Plus, the E-coated backing plate features an integral parking brake for a convenient install.

Kit is designed for the late model Ford 8.8" truck and 9" (New Style Big Ford housing with 3.15 bearings, 2.5" offset) rear axles. Will NOT work with Mustang 8.8" axle.

Rotors are drilled for 5 on 4-1/2" bolt pattern. See Notes tab for important install info.

Will Not Work On 15" or 16" Wheels.

Axle Flange ID Chart





Wilwood 140-7140 Rear Disc Brake Kit, Big Ford 9 Inch New 2-1/2 Offset
(Part #8351407140)

Wilwood Dynalite rear brake kits combine high performance braking, high-tech style, and functional simplicity for rear axle disc brake conversions that require a parking brake. Whether its a simple conversion from drum brakes, or an upgrade to compliment wheels, tires or suspension equipment, these kits have it all.  

The emergency brake functions as a drum brake hidden within the mounting hat of the rotor for a clean installation. E-brake cables sold separately. Caliper has a 1/8" npt inlet.

  • Big 12.19" x .810" one-piece vented rotors
  • Rotors drilled to accept 5 on 4-1/2", 5 on 4-3/4" and 5 on 5" bolt patterns
  • Forged billet four-piston calipers
  • BP-10 Smart pads for a quick response and fade resistance
  • Aluminum mounting brackets
  • Includes all hardware

835-1407140 Instructions (PDF)

Axle Flange Identification Chart  (GIF)

Item Details

Big Ford, new style, 2-1/2" offset
Includes Emergency Brake