A Guide to Drum Brake Shoes for the 1977-1981 Cadillac Eldorado
Restore the stopping power and safety of your classic Eldorado with the right parts.
- Confirm if your specific Eldorado has rear drum or disc brakes before buying parts, as both systems were available in this era.
- Aftermarket brake shoes from a reputable brand like Powerstop are the standard, reliable replacement option for these vehicles.
- Always replace the brake hardware kit and inspect or replace the brake drums when installing new shoes for a complete and safe repair.
- Due to the complexity of springs and clips, professional installation is a good choice if you are not an experienced DIY mechanic.
Signs of Failing Drum Brake Shoes
The brake system on your classic 1977-1981 Eldorado is robust, but the drum brake shoes are wear items that require replacement over time. As the friction material wears down, you will notice signs that it's time for a service. Ignoring these symptoms can lead to reduced braking performance and potential damage to other parts like the brake drums.
Key Symptoms of Worn Brake Shoes
- Grinding or Scraping Noises: A metal-on-metal sound from the rear wheels when braking is a critical warning that the friction material is gone.
- Spongy or Low Brake Pedal: If the pedal feels soft or travels further to the floor, it can indicate worn shoes or a problem with the self-adjusters.
- Weak Parking Brake: If the parking brake handle pulls up higher than usual or fails to hold the car securely, it's a strong sign the rear shoes are worn.
- Vehicle Pulling During Braking: Uneven wear can cause the car to pull to one side when the brakes are applied.
Choosing the Right Aftermarket Shoes
For a vehicle of this age, finding original equipment (OEM) brake shoes from Cadillac is nearly impossible. New Old Stock (NOS) parts are rare and expensive. Fortunately, modern aftermarket parts are widely available and are the most practical choice for keeping your Eldorado on the road. Brands like Powerstop offer replacement shoes that meet or exceed the original factory specifications.
Pro Tip: When you replace your brake shoes, it is essential to also replace the hardware kit. This includes all the springs, clips, and pins that hold the shoes in place. These parts lose tension over time, and a fresh hardware kit ensures the new shoes function correctly and quietly. Also, inspect your brake drums for any deep grooves, cracks, or signs of overheating. It is often best to have them resurfaced or replaced at the same time as the shoes.
Cost of Replacing Drum Brake Shoes
| Part/Service | Estimated Cost |
|---|---|
| New Aftermarket Shoes (Powerstop) | $56.37 |
| Brake Drums (Pair, Aftermarket) | $80 - $150 |
| Hardware Kit | $15 - $30 |
| Shop Labor | $200 - $350 |
Frequently Asked Questions (FAQ)
Do I have drum brakes or disc brakes on my 1977-1981 Eldorado?
This is a critical question. While many Eldorados in this period had rear drum brakes, some models, particularly from 1979-1981, were equipped with a four-wheel disc brake system. The 1977-1978 models also had a unique rear disc brake option. It is essential to visually inspect your rear wheels to confirm if you have drum brakes (a large, smooth drum) or disc brakes (a flat rotor and a caliper) before ordering parts.
Can I replace just the brake shoes myself?
Yes, this is a DIY-feasible job for someone with mechanical experience and the right tools. Drum brakes are more complex than disc brakes due to the number of springs and clips involved. You will need tools like brake spring pliers, jack stands, and basic hand tools. If you are a beginner, professional installation is recommended for safety.
What are the most common mistakes when replacing drum brakes?
The most common mistakes are not replacing the hardware kit, failing to clean and lubricate the backing plate contact points, and installing the self-adjuster mechanism backward. It's a good idea to take a clear picture of the brake assembly before you take it apart and to work on one side of the car at a time, leaving the other side assembled as a reference.
Were there any recalls for the brakes on these Eldorados?
Searches of the NHTSA database did not reveal any specific recalls for the drum brake shoes on the 1977-1981 Cadillac Eldorado. Most issues are related to normal wear and tear over the vehicle's long life.
Technical Specifications
Bonded Drum Brake Shoe Set for rear axle application.
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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.