C4AW-4025B FORD Center Nodular Iron Posi Gears Spline 427 428

Review FORD Inch Section Nodular Iron Posi 3.25 Gears 31 Spline for 427 428

Introducing the Ford C4AW-4025B Center Nodular Iron Posi 3.25 gears with a 31 spline design, specifically engineered for Ford 427 and 428 engine applications. These gears are an integral part of the Ford Powertrain, delivering exceptional performance and durability.

The C4AW-4025B gears are made from semi-forged, nodular iron. This material ensures both strength and toughness, as it has a fine, grain structure that is more homogeneous than other types of cast iron. Its nodular structure enhances the gears' ability to resist wear and fatigue, ensuring that they can handle the heavy-duty demands of Ford engines.

These gears feature a Posi (Positive Traction) 3.25 gear ratio. Posi refers to the differential's clutch-type limited slip design, which uses friction to distribute torque evenly between the differential's wheels, maximizing traction and improving driving performance. The Posi feature is particularly beneficial in high-performance applications where the power is distributed unevenly, enabling the wheels to turn at different speeds, thereby reducing wheel hop and improving traction.

These gears have a spline count of 31, which provides an enhanced level of contact between the pinion and the ring gear, improving the overall efficiency of the powertrain. A higher spline count also results in stronger and sturdier gears, further enhancing their durability and ability to handle heavy-duty use.

Designed to fit Ford 427 and 428 engines, these gears are a must-have for Ford enthusiasts seeking top-notch performance and reliability from their powertrains. With their nodular iron construction, Posi design, and high spline count, the Ford C4AW-4025B Center Nodular Iron Posi 3.25 gears offer outstanding durability, strength, and traction capabilities. Upgrade your vehicle with these premium gears and experience the difference in power and performance.

The Ford C4AW-4025BCenter Section, Nodular Iron, Posi 3.25 gears 31 spline 427 428 refers to a specific type of differential that is often used in Ford automobiles, particularly in rear-wheel-drive applications. Its key features include a nodular iron center section for added strength, a posi (positive traction) limited-slip differential for improved traction, and 3.25:1 gearing for a balance of power and efficiency. Here are some potential pros and cons of this differential:

1. Improved Traction: The positive traction limited-slip differential ensures that power is evenly distributed to both rear wheels, reducing wheel hop and improving traction in slippery conditions. This is particularly beneficial for those who live in areas with frequent rain or snow, or those who enjoy off-roading.

2. Increased Strength: The nodular iron center section provides greater durability and strength to the differential, allowing it to handle more power and torque without failing. This makes it an excellent choice for high-performance applications.

3. Balanced Gearing: The 3.25:1 gearing provides a good balance between power and efficiency, making it suitable for a wide range of driving conditions. It is often considered a popular choice for daily driving and highway cruising, as well as for light off-roading and drag racing.

4. Better Handling: The posi differential also improves handling by reducing wheel spin and ensuring a consistent connection between the tires and the road surface. This results in smoother acceleration and better cornering capabilities.

1. Cost: The Ford C4AW-4025B differential is considered to be a high-performance differential and, as such, it comes with a higher price tag compared to standard axles or open differentials. This may be a barrier for some buyers who are on a tight budget.

2. Complex Installation: Installing a limited-slip differential like this one can be a complex process, requiring specialized tools and technical knowledge. It may be necessary to employ the services of a professional mechanic or a differential shop to ensure that the installation is done correctly.

3. Reduced Flexibility: Since this differential is designed for improved traction and performance, it may not be the best choice for those who require greater flexibility or who frequently tow heavy loads. Its limited-slip feature can cause unnecessary wear on the drivetrain in situations where soft-engaging or no-lubrication differentials are preferred.

The Ford C4AW-4025B Center Section, Nodular Iron, Posi 3.25 gears 31 spline 427 428 is a high-performance differential that delivers improved traction, increased strength, better handling, and balanced gearing. However, it also comes with a higher cost, complex installation process, and reduced flexibility. Nonetheless, if you're looking for increased power and torque handling capability, smoother acceleration, and better cornering, this differential could be an excellent investment. It is particularly recommended for enthusiasts who drive in slippery conditions, those who tow moderately, or anyone seeking to add some excitement to their daily driving.

Details:

There are no cracks on the housing or pinion gears. I cleaned it some and painted the housing flat black. Selling as is on the pictures. Has some surface rust on of the teeth.

It spins good and smoothly. The last time I used this section, it leaked a little gear oil. This section is the early nodular iron without n stamped on housing. I am including a new pinion seal for you to install.

You can install it or leave like is. Doesn't affect the function of it. 9 inch Ford section nodular iron 3.25 gears 31 spline, posi traction.

specifications differentialsdepo:

• for models: 427, 428
• brand: Ford
• mpn: C4aw-4025b
• part type: Gear
• bore diameter: 9 In
• gear ratio: 3

seller differentialsdepo:

• # reviews: 865
• rating: 100.0%
• city: terrell, texas

payments differentialsdepo:

• wallet: paypal
• other
• credit card: visa

offer differentialsdepo:

• sold #: 25
• prices: $35.00–$75.00
• item condition:
  • Used
  • For parts or not working
  • New other (see details)
• started: january 28, 2025
• options: ship-to-home
• in stock #: 5
• availability: in stock

general differentialsdepo:

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

returns differentialsdepo:

• policy: no returns

shipping differentialsdepo:

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