F9-3.40-CENTER-31POSI FORD 9 Member Spline Posi

Review FORD 9 Inch Section 3rd Member 31 Spline Posi 3.40 Ratio for 340

The Ford F9-3 40-center 31-posi center third member with 31 spline posi 40 340 is a high-performance upgrade for your Ford vehicle's drivetrain. This third member is specifically designed for Ford F-Series trucks and is a crucial component of your vehicle's powertrain.

The 40-center design of this third member provides improved strength and durability compared to the standard 35-center design. The 40-center design allows for a larger diameter pinion shaft, which can handle more torque and power. This is particularly beneficial for high-performance applications, where increased power output is required.

The 31-posi center differential is another key feature of this third member. The "posi" stands for "positive traction," and the 31-posi design provides improved traction and reduced wheel spin. This is achieved through a set of 31 narrow helical gears that engage and disengage as the wheels turn, providing a smooth and consistent power delivery to all wheels.

The 31-spline design of the third member's output shaft is another feature that contributes to its high-performance capabilities. The 31-spline design provides increased strength and durability, allowing the third member to handle more torque and power. This is particularly beneficial for high-horsepower applications, where increased power output is required.

The 340 third member is compatible with Ford F-Series trucks equipped with the 9.75-inch rear axle. The 340 third member is designed to provide increased strength and durability compared to the standard 325 third member, making it an excellent upgrade for high-performance applications.

Overall, the Ford F9-3 40-center 31-posi center third member with 31 spline posi 40 340 is a high-performance upgrade that provides improved strength, durability, and traction for your Ford F-Series truck. Whether you're looking to upgrade your stock drivetrain or build a high-performance truck, this third member is a great option to consider.

1. Strength and durability: The 9-inch Ford rear end is known for its strength and durability, making it a popular choice for heavy-duty applications.

2. Customizability: The 31-spline posi 3rd member allows for a wide range of customization options, including different ratios and gear sizes.

3. High torque capacity: The 31-posi differential provides excellent traction and can handle high torque loads.

1. Cost: The 9-inch Ford rear end can be expensive, especially when customized with a 31-spline posi 3rd member and differential.

2. Complexity: The 9-inch Ford rear end is more complex than other rear end options, which can make installation and maintenance more challenging.

3. Weight: The 9-inch Ford rear end is heavier than other rear end options, which can negatively impact fuel efficiency and acceleration.

The Ford 9-inch 40-center 31-posi center 3rd member 31 spline posi 40 340 is a powerful and durable option for heavy-duty applications. However, it is also expensive and complex, and the additional weight can negatively impact fuel efficiency and acceleration. If you are looking for a high-performance rear end that can handle heavy loads, then this may be the right choice for you. However, if you are looking for a more cost-effective and easier-to-install option, there may be other options available that would better suit your needs.

Before making a decision, it is important to carefully consider your specific needs and budget. If you need a high-performance rear end that can handle heavy loads, then the Ford 9-inch 40-center 31-posi center 3rd member 31 spline posi 40 340 may be the right choice for you. However, if you are looking for a more cost-effective and easier-to-install option, you may want to consider other rear end options that may better suit your needs. It is always a good idea to consult with a professional mechanic or expert in the field to help you make an informed decision.

Details:

Everything was brand new when it originally assembled case included. This unit is in very good shape and would be perfect for a street car / hot rod application. Tim ken bearings. As you can see in the pictures, it does not have very many miles on.

Heavily discounted, high quality, build. 3.40 ratio us gear. Build specs: - iron case. Assembled with a iron case, 31 spline Eaton rhetoric/ helical posi unit, 3.40 us gear, and forged 1310 yoke.

Priced to sell. 1310 forged yoke. 31 spline Eaton rhetoric posi unit 913a586.

specifications differentialsdepo:

• brand: Ford 9
• mpn: F9-3.40-center-31posi
• type: Third Member
• oe/oem part number: F9-340, F9-340-center-31posi
• items included: Center Section
• gear ratio: 3.40
• id: Eb0108
• bore diameter: 9 In
• placement on vehicle: Rear

returns differentialsdepo:

• policy: no returns

payments differentialsdepo:

• credit card: discover
• other
• wallet: google-pay

shipping differentialsdepo:

• service: ups ground
• type: fixed
• class: standard
• transit: 3-8 days
• carrier: ups

offer differentialsdepo:

• sold #: 40
• availability: in stock
• options: ship-to-home
• started: october 22, 2024
• best offers: true
• quantity: 1

seller differentialsdepo:

• rating: 99.4%
• city: hiawatha, iowa
• # reviews: 703

general differentialsdepo:

• category: Auto Parts > Transmission Drivetrain > Differentials, Assemblies > Additional