Ford 9 Inch 31 Spline Cut to Fit Racing Axles & Studs, New Ford

#9101440

Ford 9 Inch 31 Spline Cut to Fit Racing Axles & Studs, New Ford

Name: Ford 9 Inch 31 Spline Cut to Fit Racing Axles & Studs, New Ford
Brand: Speedway Motors
SKU: 9101440
Price: 386.99 USD
Availability: InStock
Rating: 5 (4 reviews)

4 Reviews

1 Question

Fits Ford 9 inch axle housings with New "Torino" big bearing flange, 3.150" O.D. bearing, 2-1/2" offset
Long axle is 33" from face of axle flange to the tip of the splined end with 9-1/4" of spline
Steel studs with a zinc finish

$386.99

/pair

In Stock

$392.47

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Product Summary

Ford 9 Inch, Semi-Floating Axle Type, 31 Spline Count

Fits Ford 9 inch axle housings with New "Torino" big bearing flange, 3.150" O.D. bearing, 2-1/2" offset
Long axle is 33" from face of axle flange to the tip of the splined end with 9-1/4" of spline
Steel studs with a zinc finish
Studs have a 1/2"-20 RH thread pitch with a .685 knurl

Comes as a Kit

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Key Specs

MFG. Part #	9101440
Brand	Speedway Motors
Axle Type	Semi-Floating
Spline Count	31
Material Type	Steel

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Installation Details

Installation Tips

Installation Notes:

Disc brake kits may require increasing the i/d of the center hole in the rotor to match the o/d register or hub pilot on the axle flange, or reducing the diameter of the register or hub pilot on the axle to fit properly to the i/d of the rotor.

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.

When cutting axles to desired lengths, it is recommended that the following procedures are performed:

Normal steel cutting machinery (cold saw, band saw, chop saw, etc.)
Using a sleeve around the axle such as a small piece of PVC tubing - this allows:
- The axle to be spun in place while being cut
- A perimeter cut around the outer diameter assisting in keeping the cut square
- Avoiding the build-up of too much heat by doing a straight cut (like a knife though a stick of butter)

To ensure you get the most out of your new 9 Inch components, it is recommended 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

Also available for consideration when a replacement axle

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Speedway Motors 9101440 Details

Axle Shafts

These steel axle shafts have a natural finish and are sold individually. They are perfect for small shops and will allow you to build your own custom width rear end easily. Axle length is measured from the flange to the end of the splines.

Circle track / off road application 5/8" thread wheel studs sold separately 910-05957 and 910-05958
Street application 1/2" thread wheel studs sold separately 910-05959 and 545-46190
9 Inch Ford
31 Spline Axle
- Short axle is 29.5" length from face of axle flange to tip of the splines with 10 1/8" of spline length
- Long axle is 33" length from face of axle flange to the tip of the splined end with 9-1/4" of spline
New style big bearing ends on it
Bearing measures 3.150"
Bearings already pressed in
2-1/2" Offset
Drilled for 5 on 4-1/2", 5 on 4-3/4", and 5 on 5" wheel bolt patterns using 0.685" knurl dia.
PA20 set bearing
AR375 Torino retainer
Axle length is from the flange to the end of the splines
Axles sold each, not as a pair
Axles have 3 bolt patterns in them: 5 on 4-1/2", 5 on 4-3/4", and 5 on 5"
The hub pilot (center of the axle flange) measures 3.055"
The O.D. of the axle flange measures 5.93"
Hub Register O.D. is different on the 35 spline with 2.78"

For more information on determining the proper axle length and the Ford 9 Inch, be sure to check out our tech articles; How to Measure and ID Differential Housings and The Rearend Debate: Ford vs. Chevy.

Axle Studs

These press-in wheel studs from Dorman Products Inc. are engineered to quality standards. The design ensures that your wheels will be tight at all times.

Corrosion resistant
Direct replacement for a proper fit
1/2"-20 RH thread w/ .685 Knurl
1.9" long
Serrated Stud
Box of 10
Steel Construction

Speedway Motors 9101440 Specifications

KEY SPECS
MFG. Part #	9101440
Brand	Speedway Motors
Axle Type	Semi-Floating
Spline Count	31
Material Type	Steel

GENERAL
Position	Rear
Bolt Pattern	Multi: 5 on 5" \| 4.75" \| 4.50"
Housing End Style	Big Ford/New Style (Torino)
Wheel Studs Included	Yes
Finish	Natural
Sold in Quantity	Pair
Knurl Diameter	0.685"
Stud Length	2.125"
Thread Pitch	1/2"-20"
Cut to Fit	Yes

Ratings & Reviews

4 Reviews

Overall Assessment

Customers find the product of excellent quality, particularly when building large-scale, professional-grade assemblies. They appreciate that the item is compatible with 5/8 threaded studs. The cut-to-fit axles, disc brake conversion kit, and brake line kit have been praised for their functionality and ease of use. Despite initial skepticism, the product has exceeded expectations. There may be a need for minor adjustments, but overall, the product was found to be practical and reliable. In comparison to competitors, users are more likely to repeat purchase and choose this for their future builds.

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yes

5.0

3 years ago

perry

mcconnellsbuirg pa.

Verified

nice item

Would Recommend

I would purchase this again

5.0

3 years ago

Steele Johnson Racing

Hendersonville ,TN

Verified

Building a 9 inch for my S/Pro Trans Am , they worked great. I didn't think about checking to see if they would accept 5/8 threaded studs but that wasn't a problem.

Would Recommend

I would buy again

5.0

3 years ago

Steele Johnson Racing

Hendersonville ,TN

Verified

I was a bit skeptical at first saw where a few had issues, I used Speedway products before never had a problem. Building a 9 Inch I cut and narrowed for my super pro Trans Am ordered their cut to fit axles , disc brake conversion kit and brake line kit. All went well made some minor clearance adjustments on the rotors not a problem got the race axles and had to put on lathe and shave a few thou out. Caliber brackets had to be massaged to clear T bolts was using bolts for this, over all great product will be purchasing for my next build.

Would Recommend

Great product worked perfectly...thanks

5.0

3 years ago

V154

Tucson, Az

Verified

Will buy again (and again) I'm sure as I build more cars..

Would Recommend

Showing 4 of 4 reviews

Questions & Answers

1 Question • 1 Answer

Sort Questions

Yo hi, can you tell me me the thickness of the axle flange, where the studz fit thru.I want to determine if I need longer wheel studz. My rims are American Racing Equipment 👍

by Mike

• 7 months ago

1 answer

View Answer

1 of 1 questions shown