Ford 9 Inch Third Member Assembly, Full Spool, 31-Spline
- 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.