Guide to 1977-1981 Chevrolet Impala Rear Drum Brake Hardware
Keep your classic Impala stopping safely and quietly by replacing its essential drum brake hardware.
- Always replace the drum brake hardware kit when installing new brake shoes to ensure safety and proper function.
- Aftermarket kits from reputable brands like ACDelco, Raybestos, or Centric offer excellent quality, often exceeding the original 1970s specifications.
- Failing hardware is a common cause of brake noise, a spongy pedal, and poor parking brake performance on the 1977-1981 Impala.
- The job is affordable, but requires patience and special brake tools for a successful DIY replacement.
Is Your Impala's Braking Noisy or Weak? The Hardware Might Be the Problem
The rear drum brakes on your 1977-1981 Impala rely on a set of small springs and clips to function correctly. Over 40+ years, this hardware corrodes, and the springs lose their tension. When this happens, you can experience a range of braking problems, even if your brake shoes are still good. It is always recommended to replace the hardware kit any time you replace the brake shoes to ensure safe, quiet, and reliable braking.
Don't Reuse Old Hardware
Never reuse old brake hardware. The springs weaken with age and heat cycles, and corroded clips can fail unexpectedly. A new hardware kit is very inexpensive and is critical for a safe and effective brake job.
Choosing the Right Aftermarket Hardware Kit
For a classic car like the '77-'81 Impala, original equipment (OEM) hardware is virtually impossible to find new. Thankfully, the aftermarket offers many high-quality options that often meet or exceed the original 1970s specifications. Brands use modern materials and anti-corrosion coatings that can be superior to what was originally on the car.
Here’s a breakdown of available brands:
- Premium Brands (OEM Quality or Better): ACDelco and Raybestos are top-tier choices. ACDelco is GM's original parts brand, and their aftermarket parts are built to high standards for fit and function. Raybestos is another highly respected name in brakes, known for durable and reliable components.
- Standard Replacement Brands: Centric, Carlson, and Dynamic Friction offer excellent value. They provide reliable, quality parts that are perfect for daily driving and general use. Many professional shops use these brands. Centric, in particular, is a massive manufacturer that produces parts for many other private-label brands.
- Economy Brands: While sometimes viewed as a budget option, Dorman often provides parts that meet basic requirements. However, quality can be inconsistent across their product lines, with some forum users preferring to use them for non-critical components. For safety-critical parts like brake hardware, sticking with a dedicated brake brand is often a better choice.
Pro Tip: Check for Complete Kits
Ensure the kit you buy is for your Impala's specific rear axle and includes all the necessary parts for both rear wheels. A complete kit should contain all the return springs, hold-down springs, pins, clips, and components for the self-adjuster.
Cost of Replacing Your Drum Brake Hardware
Replacing the drum brake hardware is an affordable job, especially when done at the same time as the brake shoes. The parts themselves are inexpensive, with most of the cost coming from labor if you have a shop do the work.
| Part/Service | Estimated Cost |
|---|---|
| New Aftermarket Hardware Kit | $9 - $19 |
| Shop Labor | $150 - $300 |
| Total (Parts + Labor) | $159 - $319 |
(Cost estimates are for the hardware kit only and do not include brake shoes or drums. Labor costs can vary by location.)
Frequently Asked Questions
Do I have to replace the hardware when I change my brake shoes?
Yes, it is highly recommended. Old springs lose tension and can cause the new shoes to drag or make noise. For the low cost of a hardware kit, it is cheap insurance for a proper brake job.
What are the signs of failing drum brake hardware?
Common symptoms include scraping or clicking noises from the rear wheels, a soft or spongy brake pedal, a parking brake that doesn't hold well, and brakes that feel like they are dragging.
🎬 Learn how to diagnose symptoms of worn brake drums.Can I replace the drum brake hardware myself?
Yes, this is a DIY-feasible job for someone with mechanical experience. However, drum brakes can be tricky due to the high-tension springs. Special tools like brake spring pliers and a hold-down spring tool make the job much easier and safer. A detailed repair video or manual is essential.
🎬 Watch this in-depth guide on how to change drum brakes.Are there any recalls for 1977-1981 Impala drum brakes?
Searches on the NHTSA database show brake-related recalls for some GM vehicles from that era, but specific campaigns for the 1977-1981 Impala's drum hardware were not found. Most recalls from that period have long since expired.
Helpful Videos
Technical Specifications
Kit typically includes return springs, hold-down springs, retaining clips, and self-adjuster components for servicing two rear drum brakes.
We Have This Part in Stock
The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.