CORVETTE 3870354 Muncie Transmission

( Brand: Corvette ), ( Manufacturer Part Number: 3870354 ), ( Part Type: Transmission )

Review CORVETTE Muncie Transmission Id Tag #3870354 fits M20 1966–1967

Introducing the Corvette 3870354 1966-1967 Muncie M20 4-Speed Transmission, a classic automotive component that adds both power and style to your 1966 or 1967 Corvette. This transmission is a must-have for enthusiasts and collectors who seek authenticity and performance.

The Muncie M20 is a manual, 4-speed transmission that was originally produced by Muncie Gear Inc. for the Chevrolet Corvette between 1963 and 1967. This specific transmission, the Corvette 3870354, is a direct replacement for your 1966 or 1967 Corvette and is known for its robust design, smooth shifting, and reliable performance.

The Muncie M20 transmission features a strong, cast iron housing and syncromesh design that ensures smooth and easy shifting between gears. It comes with a standard 1.13:1 first gear ratio, making it ideal for both everyday driving and high-performance applications. The transmission also includes a heavy-duty clutch system that can handle the power of large engine upgrades.

The Corvette 3870354 Muncie M20 transmission is completely rebuilt to meet the highest standards of quality and performance. Each rebuild includes a thorough inspection of all components, replacement of worn or damaged parts, and a fresh coat of paint on the transmission case. The synchros are checked and adjusted for smooth operation, and the clutch pressure plate and throwout bearing are replaced with new units.

This transmission is designed to fit directly into your 1966 or 1967 Corvette, making installation quick and easy. The included mounting hardware and instructions ensure a hassle-free installation process. Additionally, this transmission is compatible with a wide range of engine options, including small block Chevrolet V8s, making it a versatile choice for your classic Corvette.

In summary, the Corvette 3870354 1966-1967 Muncie M20 4-Speed Transmission is a high-quality, rebuilt transmission that delivers both power and style to your classic Corvette. With its robust design, smooth shifting, and reliable performance, this transmission is an essential upgrade for any Corvette enthusiast or collector.

The Muncie M20 transmission, specifically the 1966 and 1967 models, is a popular choice among car enthusiasts for its robust design and use in classic American muscle cars like the Chevrolet Corvette. Here are some pros and cons to consider before purchasing a Muncie M20 transmission:

1. Durability: The Muncie M20 transmission is known for its durability and strength. It was designed to handle high horsepower and torque, making it an excellent choice for performance applications.

2. Wide Ratio: The wide ratio version of the Muncie M20 transmission offers a low 2.93:1 first gear, which is ideal for getting off the line quickly and smoothly. It also has a high 1.61:1 overdrive gear, which helps improve fuel economy and reduce engine RPMs at highway speeds.

3. Reputation: The Muncie M20 transmission has a strong reputation among car enthusiasts and collectors. It is highly sought after due to its performance capabilities and classic design.

4. Availability: While the Muncie M20 transmission is not as common as some other transmissions, it is still relatively easy to find. Many salvage yards and transmission specialists carry rebuilt or used Muncie M20 transmissions.

5. Affordability: Compared to some other high-performance transmissions, the Muncie M20 can be relatively affordable, especially when purchased used or rebuilt.

1. Complexity: The Muncie M20 transmission is a manual transmission with a complex design. It requires regular maintenance and a certain level of mechanical knowledge to operate and repair effectively.

2. Shifting: The Muncie M20 transmission can be challenging to shift smoothly, especially when cold or under heavy load. This can be due to the synchronizers not engaging properly or the clutch not disengaging completely.

3. Wear and Tear: The Muncie M20 transmission is a used or rebuilt part, which means it may have wear and tear that needs to be addressed before use. This can include worn bearings, synchros, or clutch components.

4. Compatibility: The Muncie M20 transmission is specific to certain vehicles and engine sizes. It may not be compatible with all Corvette models or engines, so it's essential to ensure the transmission is a good fit before making a purchase.

5. Repair Costs: While the Muncie M20 transmission is relatively affordable compared to some other high-performance transmissions, the cost of repairing or rebuilding it can be significant. It may be worth considering the cost of repair versus the cost of a new transmission or alternative options.

The Muncie M20 transmission is a robust and durable option for those looking to add performance to their classic Corvette or other muscle cars. Its wide ratio gears offer excellent acceleration and highway cruising capabilities, making it an attractive choice for many enthusiasts. However, the complexity of the transmission and potential for wear and tear may require additional maintenance and repair costs. Ultimately, the decision to purchase a Muncie M20 transmission depends on the specific needs and budget of the buyer. If you are willing to invest the time and resources into maintaining and repairing the transmission, it can provide excellent performance and value.

If you are considering purchasing a Muncie M20 transmission, it's essential to do your research and ensure it is compatible with your Corvette model and engine size. It's also crucial to inspect the transmission thoroughly before making a purchase to identify any potential issues that may require repair. If you are not confident in your mechanical abilities, it may be worth considering a rebuilt or new transmission from a reputable supplier to minimize the risk of complications. Ultimately, the Muncie M20 transmission can be a worthwhile investment for those seeking classic performance and durability.

Details:

New, still in unopened package. Transmission tag for 1966 1967 Corvette Muncie M20 with 3 350, and 390 hp engines.Tag # 3870354.

part #: 3870354 prices

• $899.99-$1649.99

specifications manutransmission:

• for models: M20
• for years: 1966-1967
• brand: Corvette
• mpn: 3870354
• part type: Transmission

seller manutransmission:

• # reviews: 678
• city: Ann Arbor, Michigan
• rating: 100.0%

payments manutransmission:

• wallet: Google-pay
• credit card: Discover
• other

general manutransmission:

• Car Truck Parts Accessories > Transmission Drivetrain > Manual Transmission Parts
• condition: New

offer manutransmission:

• started: February 20, 2025
• options: Ship-to-home
• sold: 0
• availability: In Stock
• quantity: 1

returns manutransmission:

• policy: No Returns

shipping manutransmission:

• service: USPS First Class Letter, USPS Ground Advantage, USPS Priority Mail
• cost: $1.01
• carrier: USPS
• class: Standard, Expedited
• transit: 4-8 Days
• type: Calculated

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