Speedmaster Third Member Assembly HD Case 31-Spline TorqueWorm LSD Ford 9”

The Speedmaster Ford 9" HD Case Third Member Assembly with 31-Spline TorqueWorm LSD is an exceptional product suited for daily drivers, street rods, and race cars alike. The A356-T6 aluminum construction, one-piece billet bearing caps with through-bolt center section design, and 12-point through bolts make this third-member assembly incredibly strong, with a horsepower rating of over +1,000. The unique TorqueWorm 6-pinion gear type limited-slip differential is preloaded and faster-reacting, with stress spread over a greater surface area to reduce internal load.

Features and Benefits:
- Great for daily drivers, street rods, and race cars
- A356-T6 aluminum construction
- One-piece billet bearing caps with through-bolt center section design
- +1,000 horsepower rated
- Includes 12-point through bolts and billet pinion support
- Unique TorqueWorm 6-pinion gear type limited-slip differential
- Preloaded and faster-reacting unit
- Spreads stress over a greater surface area to reduce internal load
- EN36 material is made for racing applications
- 8620 chrome-nickel-Moly steel outer case for long life and strength
- CNC machined high-quality gear sets
- Heat-treated for extreme durability and high impact
- Lapped for correct tooth contact and smoothness
- TDS long-style billet yokes CNC machined to exact specifications
- Available in several gear ratios

Made with EN36 racing material and featuring a CNC machined high-quality gear set that is heat-treated for extreme durability and high impact, this assembly provides long-lasting performance upgrades. The assembly is also lapped for correct tooth contact and smoothness. Available in several gear ratios, this third-member assembly is a serious contender for any automotive application requiring top-level performance and reliability.

Specifications:
- Part type: third member complete assembly
- Product line: standard-nose case
- Case style: Ford 9”
- Case material: aluminum
- Main cap material: aluminum
- Main cap retention style: thru-bolt
- Carrier bearing diameter (in): 3.250”
- Pinion support bolt quantity: 10
- Standard pinion location: yes
- Ring gear load bolt: no
- Ring and pinion included: yes
- Yoke included: yes
- Yoke style: 1350 series
- Bearings included: yes
- Carrier type: 31-Spline Speedmaster Torque Worm LSD

Vehicle Fitment:
- 1965-1973 Mustangs
- 1948-1979 F-100s
- 1966-1977 Broncos

Please Note: These 3rd members are to be used with a mineral-based oil of a range of EP140 Extreme pressure at a minimum. NO split grades such as 85/140 (these are not recommended). Failure to use the correct oil can result in gear damage and noise.