CHEVROLET TRUCK SUBCHEV20 Manual Trans Clutch Brake Pedal 546.GM8D79 /brake Box

( Brand: Chevrolet Truck ), ( Manufacturer Part Number: SUBCHEV20 ), ( Conditions Options: Manual Clutch Pedal Box ), ( Genuine Oem: Yes ), ( Ipn: 546.gm8d79 ), ( Make: Chevrolet )

Review CHEVROLET TRUCK Chevy Manual Trans Clutch /brake Pedal Box Assembly fits SUBURBAN 1974-84–1979

The **Chevrolet 546.GM8D79 manual transmission clutch and brake pedal box assembly** from the **1974 1984 Chevrolet Suburban** era represents a robust and time-tested component designed for durability and performance in classic full-size GM trucks and SUVs. This assembly is a critical part of the vehicle s drivetrain, housing the clutch mechanism, shift linkage, and brake pedal assembly, all of which work in tandem to deliver smooth power transfer and responsive braking. The **546.GM8D79** designation refers to a specific model variant of the **GM Muncie M22 or Turbo Hydramatic 200 four-speed manual transmission**, which was commonly paired with the **250 cubic-inch inline-six engine** or the **305/350 V8** in these Suburbans. The clutch itself is a **single-disc dry clutch**, featuring a pressure plate, flywheel, and throw-out bearing, all engineered to handle the torque demands of these powerful engines while providing precise engagement and disengagement. The **brake pedal box** is integrated into this assembly, housing the master cylinder linkage and often incorporating a **brake servo assist mechanism** (common in models with power brakes), ensuring efficient hydraulic pressure for consistent stopping power. This unit is built with **cast aluminum or steel housings**, reinforced with high-strength fasteners and gaskets to prevent leaks and ensure longevity, even under heavy loads or off-road conditions. The **shift linkage** is designed to accommodate the **floor-mounted manual shifter**, allowing for smooth gear selection with minimal play, while the **clutch pedal** features a **hydraulic or cable-actuated throw-out bearing** for consistent clutch engagement. Whether restoring a classic Suburban for daily driving, towing, or off-roading, this **546.GM8D79 clutch and brake pedal box** is a reliable, high-performance component that bridges the gap between engine power and drivetrain control, embodying the rugged engineering of GM s mid-century truck platforms. For collectors, restorers, and enthusiasts, this assembly is not just a functional part it s a piece of automotive history that ensures the Suburban s legendary reliability and driving character endure.

### **Pros and Cons of Buying a 1974 1984 Chevrolet Suburban with a Manual Transmission (546.GM8D79 Clutch/Brake Pedal Box)**

#### **Pros**

1. **Classic Driving Experience** Manual transmissions offer a more engaging and hands-on driving experience, appealing to enthusiasts who enjoy the connection between throttle, clutch, and gears.

2. **Lower Maintenance Costs (Potentially)** Manual transmissions are generally simpler than automatics, which can mean fewer long-term issues if maintained properly. However, this depends heavily on the specific vehicle s condition.

3. **Better Fuel Efficiency (Historically)** Older manual transmissions in well-maintained vehicles can sometimes outperform automatics of the same era, though modern fuel economy standards would not apply here.

4. **Niche Market Appeal** If you enjoy classic vehicles, a manual-transmission Suburban from this era could be a unique and collectible choice, especially if restored or well-preserved.

5. **Easier Repairs for Enthusiasts** Many mechanics and DIYers are more familiar with manual transmissions, making repairs potentially more straightforward than dealing with older automatics.

6. **Lower Purchase Price (Compared to Modern Vehicles)** These vehicles are significantly cheaper than new or even used modern trucks, making them an attractive budget option.

7. **Potential for Restoration Projects** If you enjoy working on cars, a manual-transmission Suburban could be a rewarding project vehicle, allowing for customization and learning.

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#### **Cons**

1. **Harsh Driving Experience** The driving dynamics of a 1970s 1980s Suburban, even with a manual, are far less refined than modern vehicles. The ride can be rough, handling can be sluggish, and noise levels are high.

2. **High Maintenance Requirements** These vehicles are aging, and parts (especially for older manual transmissions) can be difficult and expensive to source. Rust, worn suspension, and outdated electrical systems are common issues.

3. **Clutch and Transmission Wear** Manual transmissions from this era are known for clutch failure over time, especially if the vehicle has been driven aggressively or not maintained properly. Rebuilding or replacing a clutch can be costly.

4. **Limited Modern Safety Features** Airbags, modern braking systems, and structural integrity are not priorities in these older vehicles. Safety standards are far below today s expectations.

5. **Fuel Economy is Poor by Modern Standards** Even with a manual, these trucks were not designed for efficiency. Expect poor mileage, especially if the engine is not well-maintained.

6. **Difficulty Finding Parts** While some parts are still available, others may require sourcing from junkyards or specialty suppliers, adding to ownership costs.

7. **Resale Value is Minimal** Unlike modern trucks or even well-preserved classics, these vehicles have little to no resale value unless they are in exceptional condition or part of a restoration project.

8. **Driving Challenges** Modern traffic and road conditions can be difficult to navigate in an older, heavier vehicle with outdated suspension and braking systems.

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### **Conclusion and Recommendation**

Buying a **1974 1984 Chevrolet Suburban with a manual transmission (546.GM8D79 clutch/brake pedal box)** is a decision that depends heavily on your priorities:

- **If you are an enthusiast who enjoys working on cars, driving classics, or restoring vehicles**, this could be a rewarding project. The manual transmission adds to the authenticity, and if you are prepared for high maintenance costs, it could be a fun and unique vehicle.

- **If you prioritize practicality, safety, reliability, or modern comfort**, this is not the right choice. The vehicle will likely require constant upkeep, lacks modern safety features, and will not be cost-effective in the long run.

- **If you plan to use it as a daily driver**, consider a more modern used truck with an automatic transmission instead. The trade-offs in comfort, safety, and reliability are not worth the challenges of maintaining an older manual transmission Suburban.

- You have mechanical experience and are prepared for significant maintenance.

- You are buying it for restoration or as a hobby project, not daily use.

- You can afford the potential costs of clutch, transmission, and general wear-and-tear repairs.

If you are looking for a **practical, reliable, or comfortable vehicle**, this is not the right choice. Instead, consider a **well-maintained used truck from the 2000s onward with an automatic transmission** for a balance of affordability and usability.

Details:

GM8D79 227995. R00414528 546. Find us on Facebook. Miles means are unknown.

specifications pedalspadsaz:

• for models: Suburban
• for makes: Chevy, Chevrolet
• for years: 1974-84-1979
• brand: Chevrolet Truck
• mpn: Subchev20
• conditions options: Manual Clutch Pedal Box
• genuine oem: Yes
• ipn: 546.gm8d79
• make: Chevrolet

shipping pedalspadsaz:

• carrier: UPS
• service: UPS Ground
• class: Standard
• type: Fixed
• transit: 4-9 Days
• cost: $49.95

general pedalspadsaz:

• condition: Used
• Car Truck Parts Accessories > Interior Parts Accessories > Pedal Assemblies, Pads Parts

seller pedalspadsaz:

• city: Vancouver, Washington
• rating: 99.7%
• # reviews: 10649

offer pedalspadsaz:

• quantity: 1
• options: Ship-to-home
• started: February 5, 2026
• availability: In Stock
• sold: 0

payments pedalspadsaz:

• credit card: Mastercard
• other
• wallet: Apple-pay

returns pedalspadsaz:

• policy: Returns Accepted
• time: 30 Days
• paid by: Buyer

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