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#91048446
Ford 9 Inch Gear-Style Posi Third Members w/ Currie Housing
- This Ford 9" rear end has a Currie CE-4026C Ford "N" nodular iron carrier housing
- Includes a 1310-series yoke that is the correct size for many Ford applications
- The F9-Plus Sportsman gear case is a 100% new unit cast out of 65,000 p.s.i. nodular iron and features 3.062" carrier bearing bores
$1,483.99
/each
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Product Summary
Ford 9 Inch, Limited Slip Differential Type
- This Ford 9" rear end has a Currie CE-4026C Ford "N" nodular iron carrier housing
- Includes a 1310-series yoke that is the correct size for many Ford applications
- The F9-Plus Sportsman gear case is a 100% new unit cast out of 65,000 p.s.i. nodular iron and features 3.062" carrier bearing bores
- Rated to handle upwards of 600 horsepower
- They are available in your choice of 3.50, 3.70, 3.89, 4.11 or 4.56 gear ratio
Key Specs
| Differential Type | Limited Slip |
| Housing Material | Nodular Iron |
| Gear Ratio | Select Spline and Ratio |
| Axle Splines | Select Spline and Ratio |
| Yoke U-Joint Series | 1310 |
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Assembled by Professionals
Hand-assembled by trained experts in-house, our Ford 9-inch third members are built from quality components with an exact step-by-step process. We bring this combination of precision assembly and quality components to you at a price that can’t be beat. We trust these third members so much, they’re the go-to choice for our own rides, from the street to the track.
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, muscle car or truck. We start with a Currie CE-4026C Ford "N" nodular iron carrier housing and then install bearings, seals, a heavy duty "Daytona" pinion support, a 1310-series yoke, and your choice of ring-and-pinion ratios. 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.
Note - Speedway Motors Differential 3rd members come with a 1310 Universal Joint (U-Joint) series yoke. No other Yoke size options are available.
1310 series U-Joint and Bearing Cap Reatainers Not Included - Sold Seperatly
F9-Plus Sportsman gear case is a 100% new unit cast out of 65,000 p.s.i. nodular iron and features 3.062" carrier bearing bores. Case is complete with caps, cap bolts, billet spanner nuts, and spanner nut retainers. Horsepower limit is approximately 600.
These Ford 9 inch third member assemblies feature a Richmond Powertrax Grip Pro limited slip differential available in 28 or 31 spline axle shaft configurations. This helical gear differential is perfect for light-to-medium weight street vehicles where one wants posi-action without the adverse handling effects or noise of a full locker. Because there are no friction plates, there is no friction modifier additive necessary.
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.
Charts
Instructions (PDF)
Guides & Documents
Warranty Information
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Warranty Information
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No warranty is offered for commercial, off road, street performance, or racing use.
Specifications
Specifications
| KEY SPECS | |
|---|---|
| MFG. Part # | Select Spline and Ratio to see |
| Brand | Speedway Motors |
| Differential Type | Limited Slip |
| Housing Material | Nodular Iron |
| Gear Ratio | Select Spline and Ratio to see |
| Axle Splines | Select Spline and Ratio to see |
| Yoke U-Joint Series | 1310 |
| Spool Weight | Standard |
| Ring Gear Weight | Standard |
| GENERAL | |
| Yoke Width | 3-7/32" |
| U-Joint Cap Size | 1-1/16" |
| Weight | 78.55 lbs. |
| Sold in Quantity | Each |
| Gear Material | Steel |
| Yoke Included | Yes |
| Ring and Pinion Included | Yes |
| Carrier Style | Gear Style Posi |
Ratings & Reviews
4.9
9 Reviews
Customers appreciate our product for its quality and durability, indicating that it outperforms competitor versions of differentials. Its high capacity and longevity are particularly praised, proving superior in thorough user research. The product has proven itself practically, being professionally built and solid, with customers noting successful installations in various vehicles like 1970 Camaro with LS3, 525hp, and 64 C10 truck. It also surpasses expectations in performance, reducing noise levels compared to alternatives, and ideal for those who enjoy black burnout marks. It's noted as a 'bullet-proof', cost-effective solution, making it a more sensible choice to buy this complete third member from our range. Overall, this product provides the 'best bang for your buck' in terms of price and quality.
Ratings & Reviews
4.9
9 Reviews
Customers appreciate our product for its quality and durability, indicating that it outperforms competitor versions of differentials. Its high capacity and longevity are particularly praised, proving superior in thorough user research. The product has proven itself practically, being professionally built and solid, with customers noting successful installations in various vehicles like 1970 Camaro with LS3, 525hp, and 64 C10 truck. It also surpasses expectations in performance, reducing noise levels compared to alternatives, and ideal for those who enjoy black burnout marks. It's noted as a 'bullet-proof', cost-effective solution, making it a more sensible choice to buy this complete third member from our range. Overall, this product provides the 'best bang for your buck' in terms of price and quality.
4.9
9 reviews
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THE FORD 9" DIFF WORKED FINE AND WAS QUIET
5.0
a year ago
DYNO DREW
IDAHO FALLS IDAHO
Verified
THE WAY IT WAS SHIPPED AND HOW IT WAS PUT TOGETHER WAS VERY IMPRESSIVE. THANK YOU!
Would Recommend
I would buy this product again
5.0
3 years ago
Billy
Tennessee
Verified
I feel it's a very good product
Would Recommend
My research verified this differntial to be superior
5.0
7 years ago
Evan
Colorado
Verified
I needed a longer lasting, higher capacity differential that this design provided.
Would Recommend
Well built, would've liked to get hardware
4.0
8 years ago
Journeywork
Dallas, TX
Verified
It's profesionally built and solid. Would be nice if it came with copper washers, gasket, nuts.
Would Recommend
Great part, delivered as advertised
5.0
8 years ago
Ole Andy
Portland OR
Verified
Put in my 1970 Camaro with LS3, 525hp, broke in recently and now starting to burn out a little. Lays out nice black burn out marks, just the way I like it. No complaints.
Would Recommend
I would purchase this product again
5.0
9 years ago
Bob
Wallowa Or
Verified
Installed in my 64 C10 truck
Would Recommend
Bullet-proof
5.0
9 years ago
Senior citizen and never gonna grow up
Tx
Verified
Going into my 57 BA
Would Recommend
Great
5.0
9 years ago
The wife
Olive branch MS
Verified
This works great .. Does not make the noise like my old 4:11 posi unite did ..
Would Recommend

Best bang for your buck.
5.0
9 years ago
Chevy ii Dave.
Baltimore, md.
Verified
I looked at purchasing pieces for my ford 9", then I looked at the complete package from speedway and it made much more sense. For the price and quality and my application, it was a better option for me to buy a complete third member from speedway. Great company with awesome tech support and customer service.
Would Recommend
Showing 9 of 9 reviews
Questions & Answers
Questions & Answers
5 Questions • 6 Answers
1) Do you offer this with a 1330 yoke? 2) How do the Richmond gears compare with the Detroit Truetrac? 3) Do you offer the isotopic finishing on the ring & pinion?
by Charles
• 7 years ago
1 answer
View Answer
Hi, I would like to know a difference Of # 91048446 and # 91048345 product ? Thanks
by Benoit
• 7 years ago
2 answers
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Could you tell me the spline count on the yoke and input shaft? Thanks.
by Dave
• 8 years ago
1 answer
View Answer
I have a 54' Chevy 3100 1/2 ton truck with an LS Vortec motor out of an 03' Tahoe with a 4L80E transmission. What gearing would you recommend with this setup i have? I plan to use 18"-20" wheels on the truck. Haven't decided yet. Will be used for street use and not race. Thanks
by SFFD103
• 9 years ago
1 answer
View Answer
will this rear fit my 1978 ford f 150 4x4
by marcel
• 9 years ago
1 answer
View Answer
5 of 5 questions shown

