GM 3858997 Muncie Gear Fork Apps 3RD 4TH

( Brand: Gm ), ( Manufacturer Part Number: 3858997 ), ( Type: Shift Fork ), ( Material: Steel ), ( Vintage Part: Yes )

Review GM Chevy Muncie Spd 3rd 4th Gear Shift Fork Read Apps fits M20 1976–1979

GM M20 3rd and 4th Gear Fork Assembly for 1976-1979 Chevy Muncie Transmission

The GM M20 3rd and 4th Gear Fork Assembly is a critical component of the Muncie M20 transmission, designed for use in select Chevrolet vehicles from the years 1976 to 1979. This assembly plays a significant role in the smooth and efficient operation of the transmission by connecting the third and fourth gear synchronizers to the transmission case.

The design of this gear fork assembly is robust and engineered to withstand the rigors of daily driving, as well as the demands of high-performance applications. Each component is manufactured to strict specifications to ensure a precise fit and reliable performance. The hardened steel construction offers superior strength and durability, while the precision-machined surfaces and slots provide accurate gear engagement and synchronization.

This gear fork assembly is suitable for both stock and modified transmission applications. It is an excellent choice for drivers seeking to restore their vintage Chevrolet vehicles to their original condition or for those looking to enhance the performance of their Muncie transmission.

Installation of the GM M20 3rd and 4th Gear Fork Assembly is straightforward and can typically be completed in a few hours with the appropriate tools and knowledge. The assembly comes complete with all necessary hardware, making it a convenient and cost-effective solution for those in need of a replacement.

In summary, the GM M20 3rd and 4th Gear Fork Assembly is an essential component for the proper functioning of the Muncie M20 transmission in 1976-1979 Chevrolet vehicles. Its robust design, precision manufacturing, and ease of installation make it a top choice for both restoration and performance enthusiasts.

The GM part number 3858997 refers to a Muncie M20 3-speed transmission third and fourth gear fork assembly for Chevy vehicles from the years 1976 to 1979. Here are some potential pros and cons related to buying this part:

1. OEM (Original Equipment Manufacturer) part: This fork assembly is a direct replacement for the original part in your Chevy vehicle, ensuring a proper fit and function.

2. Durability: Muncie transmissions are known for their robustness and longevity, making this part a solid investment for those seeking reliability.

3. Availability: This part is widely available from various automotive parts suppliers, making it relatively easy to find and purchase.

1. Cost: Replacement parts can be expensive, especially for older vehicles like the 1976-1979 Chevy models. Be prepared to invest a significant amount of money into this repair.

2. Labor costs: Installing this part may require professional assistance, which can add to the overall cost of the repair.

3. Potential for other issues: Worn or damaged components in the transmission could cause additional problems, requiring further repairs or replacements.

Buying the GM part number 3858997 for a 1976-1979 Chevy Muncie M20 transmission third and fourth gear fork assembly comes with both advantages and disadvantages. While it is an OEM part, it may be costly, and labor expenses can add to the overall investment. However, the durability and reliability of the Muncie transmission make this part a worthwhile investment for those seeking a long-lasting solution.

Before purchasing this part, consider having your transmission inspected by a professional mechanic to ensure that it is the root cause of any issues you are experiencing. This can help prevent unnecessary expenses related to additional repairs or replacements. Once you have confirmed that the fork assembly is the problem, carefully consider the potential costs and benefits before making a decision. If you decide to proceed with the replacement, be prepared for the investment in both the part and any necessary labor costs.

Details:

Will accept lower offers if more than 10 are purchased. GM Muncie Shift fork according to my Corvette parts catalog they fit 77-79 M20 for 3rd and 4th gear 66-70 3 speed.

part #: 3858997 prices

• $10.00-$24.50

specifications manutransmission:

• for models: M20
• for makes: Chevy
• for years: 1976-1979
• brand: Gm
• mpn: 3858997
• type: Shift Fork
• material: Steel
• vintage part: Yes

offer manutransmission:

• availability: In Stock
• started: January 27, 2026
• sold: 0
• best offers: True
• options: Ship-to-home

returns manutransmission:

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

general manutransmission:

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

seller manutransmission:

• # reviews: 653
• rating: 100.0%
• city: Oklahoma City, Oklahoma

shipping manutransmission:

• type: Calculated
• carrier: USPS
• class: Standard
• transit: 4-10 Days
• cost: $7.31
• service: USPS Ground Advantage

payments manutransmission:

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

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