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Garage Sale - Speedway Ford 9 Inch Posi Traction Third Member Assembly, 31 Spline, 3.50
Garage Sale - Speedway Ford 9 Inch Posi Traction Third Member Assembly, 31 Spline, 3.50

Garage Sale - Speedway Ford 9 Inch Posi Traction Third Member Assembly, 31 Spline, 3.50

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Garage Sale - Speedway Ford 9 Inch Posi Traction Third Member Assembly, 31 Spline, 3.50
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Garage Sale - Speedway Ford 9 Inch Posi Traction Third Member Assembly, 31 Spline, 3.50
Garage Sale - Speedway Ford 9 Inch Posi Traction Third Member Assembly, 31 Spline, 3.50
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Part # UP83163
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MFG. Part #:
91048345-31-350

Info

These are Garage Sale priced because they have been bolted up and returned, carrying case is broken.

As featured on Classic Truck’s Week to Wicked. Watch the transformation here!

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 new 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.

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 3.00, 3.25, 3.50, 3.70, 3.89, 4.11 or 4.56 gear ratio.

Instructions (PDF)

Notes

Gear lube recommendations :

910-44090 - For street and every day driving under normal conditions

910-44140 - For extreme duty, towing or very hot climates

NO WARRANTY, NO RETURNS ON GARAGE SALE ITEMS   

Specs

Sold in Quantity:
Each
Spline Count:
31
Ring Gear Weight:
Standard
Differential Type:
Limited Slip
Yoke Series:
1310
Housing Material:
Cast-Iron
Gear Ratio:
3.50:1
Weight:
78.55

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