3988517 GENERAL MOTORS Drum Brake Bolt Posi Rear End Axle

Review GENERAL MOTORS 70-81 Drum Brake Bolt 3.73 Posi Rear End Axle 11/44 for CAMARO FIREBIRD 2010

The general 3988517 70-81 Camaro/Firebird drum brake 10-bolt posi rear end axle is an essential component for any classic vehicle enthusiast or restoration project. This axle assembly is specifically designed for the 1970-1981 Chevrolet Camaro and Pontiac Firebird models, and it features a 10-bolt design for added strength and durability.

One of the standout features of this axle is its drum brake system. The drum brakes are known for their reliability and ease of maintenance, making them an excellent choice for classic cars that see regular use. The brake drums are made from high-quality material and are precision-machined to ensure a smooth operation and even brake distribution.

The axle also features a posi (positive traction) rear end, which is a type of limited-slip differential. The posi differential allows the drive wheels to rotate at slightly different speeds during cornering, reducing wheel spin and improving traction. This can result in improved handling and stability, making your classic car more enjoyable to drive.

The 10-bolt design of this axle provides added strength and durability, which is crucial for classic cars that see regular use or are used for performance applications. The axle tubes are made from high-strength steel, and the axle shafts are precision-machined and heat-treated for maximum strength and longevity.

This axle assembly is also designed to fit seamlessly with your vehicle's existing suspension components, making installation a relatively straightforward process. The axle comes with all necessary hardware, including brake drums, brake shoes, and wheel bearings, making it easy to get your classic car back on the road in no time.

In summary, the general 3988517 70-81 Camaro/Firebird drum brake 10-bolt posi rear end axle is an excellent choice for anyone looking to upgrade their classic car's brake system or improve its handling and performance. With its reliable drum brake system, strong 10-bolt design, and posi differential, this axle assembly is sure to provide years of trouble-free service, making your classic car even more enjoyable to drive.

1. Affordability: Compared to newer models or those with disc brakes, this type of axle is generally more affordable.

2. Availability of Parts: The 10-bolt rear end is a common design, which means parts are widely available and relatively inexpensive.

3. Retro Appeal: This type of setup maintains the classic look and feel of the 1973 Camaro/Firebird.

4. Simplicity: Drum brakes are known for their simple design and lower maintenance requirements compared to disc brakes.

1. Performance Limitations: Drum brakes may not provide the same stopping power as disc brakes, which could be a concern for high-speed driving or heavy vehicles.

2. Braking Fade: In long, high-speed braking situations, drum brakes can suffer from brake fade, which can affect performance and safety.

3. Less Responsive: Drum brakes are generally less responsive than disc brakes, which can make it harder to control the vehicle in emergency situations.

4. Weight: The 10-bolt rear end is heavier than some modern axle designs, which can impact fuel efficiency and overall vehicle performance.

While there are advantages to buying a 1973 Camaro/Firebird with a 3988517 70-81 camaro firebird drum brake 10 bolt 73 posi rear end axle, such as affordability and availability of parts, the performance limitations, including less responsive braking and potential brake fade, may not be suitable for all drivers or driving situations. Ultimately, the decision to buy or not buy depends on the specific needs, preferences, and budget of the individual car owner.

If you are looking for a classic car with an affordable price tag and enjoy the classic look, this setup could be a great choice. However, if performance and safety are top priorities, you may want to consider upgrading to a modern rear end with disc brakes. Regardless of your choice, make sure to properly maintain and service your vehicle to ensure safe and reliable performance.

Details:

The gear ratio is 3.73. One of the backing plates is pretty bent up and might need replaced. This came off one of our 1979 Camaro. This is a drum brake, 10 bolt, posi, please see photos.

I would also recommend giving this a new brake job. This rear end spins nice, there is some rust on the housing but it pretty normal. Thanks and happy buying. Buy more than one item and receive a package discount on shipping.

This will fit 70-81 Camaro, Firebird, and trans AM's. I am constantly buying more Camaro and parts so my inventory on used changes daily. Please view all pictures to assess condition and ensure this is correct for your vehicle. There is a stripped mounting hole in the housing where cover mounts, please see pictures.

specifications differentialsdepo:

• for models: Camaro, Firebird
• for years: 2010
• brand: General Motors
• mpn: 3988517
• part type: Brake Bolt Axle Motor

payments differentialsdepo:

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• credit card: visa

offer differentialsdepo:

• prices: $37.63–$112.51
• item condition:
  • Used
  • New
  • New other (see details)
• options: ship-to-home
• in stock #: 5
• availability: in stock
• sold #: 25
• started: november 6, 2024
• best offers: true

general differentialsdepo:

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

returns differentialsdepo:

• time: 30 days
• policy: returns accepted
• paid by: buyer

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seller differentialsdepo:

• city: bedford, ohio
• rating: 99.5%
• # reviews: 27575