Speedway Ford 9 In Posi Rear End Assembly, 50 Inch Width

Looking for a budget-friendly, rock-solid foundation for your custom rear suspension? Look no further. Our fabricated steel Ford 9 inch axle housings feature all-new components for maximum durability. It’s an evolution of the rugged and reliable 9 inch Ford platform.

Designed with the Builder in Mind

This housing is pumpkin-centered with uniform-length axle tubes, side-to-side. So mounting suspension brackets, especially on triangulated 3-link and 4-link systems, is much easier. Unlike factory stamped housings, these fabricated plate-steel center sections provide a wide, flat surface for easy bracket attachment. Note that the pumpkin-centered design will offset the pinion yoke about 1" to the passenger side.

Axle tubes are 3” O.D. with a 3/16” wall thickness. Heavy-wall tubes, along with a larger center section, significantly reduce distortion during welding of rear-link brackets or spring pads. Billet steel “New Big Ford” (Torino) style bearing ends are fixture-welded (3.150” O.D. bearing, with 2.50” axle flange offset).

Improved Design for Greater Durability

In addition to the heavy-duty bearing ends, the axle tubes are supported with bracing inside the large center housing. This reduces flex in the rear end housing, which is something you won’t find on stamped factory 9 inch housings. Plus, gears stay well-lubed and run cooler thanks to a large-capacity fabricated center (holds more gear oil than stamped housings). Axle is vented on the driver’s side.

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. Be sure to select your choice length; short or long, and either 28, 31 or 35 spline.

 

• 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
• 28, 31 or 35 spline axle
• Long or Short
  • 28/31 Spline Short axle is 29.5" length from face of axle flange to tip of the splines with 10 1/8" of spline length
  • 28/31 Spline Long axle is 33" length from face of axle flange to the tip of the splined end with 9-1/4" of spline
  • 35 Spline Short Axle is 29.5" length from face of axle flange to tip of the splines with 8" of spline length
  • 35 Spline Long Axle is 31.75"  length from face of axle flange to the tip of the splined end with 8" of spline
• Axle has the 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.

Yet, with improved durability, our fabricated axle housing is on average 2 pounds lighter than stock style housings of the same size! Add your choice of axle shafts and third member (sold separately), and you are ready to roll. Equip your race car, hot rod or 4X4 with Ford 9 inch parts from Speedway Motors to ensure there are no weak links in your driveline combination.

Total wheel-to-wheel mounting surface width is 50" (from hub-to-hub). The pumpkin is centered in the housing, which puts the pinion 1" offset from center, requiring different length axle shafts. For this 50" housing you will need one 25-5/8" long axle and one 23-1/4" long axle. This housing includes (8) T-bolts for the axle bearing retainer plates and (10) studs for the third member.

• Fabricated steel center section
• 3" O.D. axle tubes with 3/16" wall thickness
• Axle tubes are internally reinforced for additional strength, less flex
• Billet steel "New Big Ford" (Torino) style bearing ends
• Accepts brake kits for 2.50" axle shaft flange offset (from housing flange)
• Housing measures 45" from flange-to-flange
• Assembled rearend measures 50" from hub-to-hub (axle flange face-to-face)
• Centered pumpkin w/ 1" offset pinion yoke for easy suspension mock-up
• Greater-than-stock capacity center section holds more gear oil and runs cooler
• Requires different length axle shafts, left/right
• Includes vent on driver side axle tube
• Includes studs for 3rd member and 3/8” T-bolts for bearing retainer plates

Used to attach the 3rd member (pumpkin) to the rearend housing, works with Ford 8" and 9" rear axles.

Note: Includes aluminum washers

Our reusable rear differential gaskets have a steel core and non-stick coating. Fits 9" Ford rear axle third member housings.

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

Applications:  These wheel studs will work on a variety of race/street vehicles but are designed as direct replacements for:

• 2007-11 Dodge Nitro
• 2002/2008-12 Jeep Liberty
• 2003-06 Jeep Wrangler (Trulok Differential)