Ford 9 Inch Third Member Assembly, Full Spool, 31-Spline
Ford 9", Grand National, Full Spool Differential Type
- Get FREE shipping when your order includes this item and exceeds $99! Ground shipping only in the contiguous US.
- This item 91048343 is made to order. It will be shipped from our warehouse when it is produced.
- Professionally assembled for oval track racing only
- Includes Pro Gears ring & pinion
- Your choice of gear ratio, 3.50:1 to 7.33:1
- Includes stock Ford yoke
- Viton high heat pinion seal
- Solid pinion bearing spacer with shims
- Plastic storage case
- Weighs 77.0 lbs
910-48343 Instructions (PDF)
Third members are made to order. Please allow 24-48 hours for order to ship.
Order applicable spool:
- STD = Standard
- LITE = Lightweight
- MEGA = Megalite
Available options include machining of the yoke to accept Chevy/GM U-joint (add 91048339) and lightening of the ring gear to remove weight (add 91600013; 5.37:1, 6.66:1, 6.83:1, 7.00:1 ratios are already lightened).
NOTE: Circle track racing applications require a minimum of 4 qts. of rearend lube. Using less than this amount will lead to immediate pinion failure.
No warranty is offered or made for durability or specific performance. No warranty is offered for commercial, off road, street performance, or racing use.
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Q & A
Today on our 410 sprint car, the guys are assembling the front axle. The process can be a bit messy, but the finished product is so worth it!
Check out our 6th episode of the 410 Sprint Car Build series. Last time we assembled the rear axle and now we are installing it!
Tim talks about our Winters quick change rear end & components.
Read up on GM 10 bolt ring and pinion installation instructions. Follow along as our employee Zach installs a GM 10 bolt rebuild kit from Motive Gear.
Need help with rear end identification for your classic car? Learn how to identify 9 inch Ford housings and how to measure your axle with our diagrams.
Lucas P. explains how to choose the correct part for a Ford 9" third member build in order to achieve a bulletproof rear. You will find specific recommended parts to use from Speedway Motors.
A brief overview of the steps Speedway Motors takes to ensure you get a quality differential.