MUNCIE 3950318 Transmission Copo L78 L72

( Brand: Muncie ), ( Manufacturer Part Number: 3950318 ), ( Type: Shift Fork ), ( Oe/oem Part Number: M-22 4 Speed Muncie Chevelle Camaro Copo ), ( Vintage Part: Yes ), ( Country Of Origin: United States )

Review MUNCIE Transmission Tag Original L78 L72 Copo fits M-22 1969

The Muncie M22 "Rock Crusher" 4-speed transmission is a legendary piece of automotive history, most famously associated with the high-performance Chevrolet COPO (Central Office Production Order) cars of 1969. Specifically, we're discussing the Muncie 3950318 transmission, which was designed for use with the L78 and L72 engines.

This transmission is a robust and heavy-duty component, designed to handle the immense power and torque produced by these high-performance engines. The Muncie M22 transmission features a close-ratio gear set, which provides quick and smooth gear changes, making it an ideal choice for racing applications.

The Muncie M22 transmission housing is made of cast iron, which provides excellent strength and durability. The input and output shafts are also made of heavy-duty steel, ensuring that they can withstand the high loads and stresses placed upon them.

The synchronizers in this transmission are of the "lock-up" design, which means that they engage the gears fully when shifting, providing a positive and direct connection between the engine and transmission. This results in a more efficient power transfer and improved acceleration.

The shifter assembly for the Muncie M22 transmission is a traditional "H-pattern" design, with a floor-mounted shifter knob. The shifter is easy to operate and provides positive feedback when shifting, allowing the driver to easily select the desired gear.

The Muncie M22 transmission is a relic of a bygone era, when performance was king and engineers were free to build components that were as strong and durable as possible. This transmission is not just a gearbox, but a piece of automotive history that is coveted by collectors and enthusiasts alike.

In summary, the Muncie 3950318 M22 transmission is a high-performance, close-ratio 4-speed transmission designed for use with the L78 and L72 engines in 1969 Chevrolet COPO cars. It is known for its robust construction, strong synchronizers, and smooth shifting action. This transmission is a must-have for anyone looking to build a high-performance classic car or restore an original COPO.

The Muncie M22 "Rock Crusher" four-speed transmission is a legendary manual gearbox that was originally produced for high-performance applications in the 1960s. The specific model you're considering is the M22 from a 1969 Chevrolet COPO (Central Office Production Order) car with the engine codes L78 and L72. Here are some potential pros and cons of buying this transmission for your project:

1. Iconic Status: The M22 transmission is a highly sought-after piece among classic car enthusiasts due to its history in competition and muscle cars.

2. Durability: Known for its robust design and heavy-duty components, the M22 has a reputation for handling high power levels and abuse.

3. Gear Ratio Flexibility: The M22 transmission offers various gear ratios, allowing for customization for different driving styles and power levels.

4. Manual Control: A manual transmission offers a more direct connection to the engine, often providing better control and a more engaging driving experience.

1. Complexity: The M22 transmission is a complex piece of machinery, and its installation and maintenance can be challenging for those without experience.

2. Availability: Original M22 transmissions are becoming increasingly rare and expensive. Replicas or rebuilt units can be found, but their quality may vary.

3. Compatibility: The M22 transmission is not directly compatible with all vehicles. Be sure to check that it will fit your specific application before purchasing.

4. Cost: Original M22 transmissions can be quite expensive, especially if you're looking for a high-quality rebuilt unit or one with specific desirable features.

In conclusion, the Muncie M22 transmission is an iconic piece of automotive history that can provide a more engaging driving experience and impressive power handling capabilities. However, its complexity, rarity, and high cost may deter some potential buyers. Ultimately, the decision to purchase an M22 transmission depends on your personal preferences, budget, and the specific requirements of your project. If you're serious about the purchase, consider consulting with a professional mechanic or transmission specialist to ensure that you're getting a high-quality unit that will meet your needs.

If you're dead set on getting an M22 transmission for your project, it's recommended that you source a high-quality rebuilt unit from a reputable transmission specialist. This will ensure that you're getting a reliable and functional transmission that has been thoroughly inspected and rebuilt to meet modern standards. Do your research and take your time in selecting a reputable supplier to ensure a satisfactory experience.

Details:

Guaranteed to be original part number 3950318. You can probably flatten it out nicely with a little care or leave as is I already cleaned off most of the grease. This listing is for an original 1969 396 L78 427 425HP COPO M22 Muncie transmission, identification tag.

part #: 3950318 price

• $18.99

specifications manutransmission:

• for models: M-22
• for years: 1969
• brand: Muncie
• mpn: 3950318
• type: Shift Fork
• oe/oem part number: M-22 4 Speed Muncie Chevelle Camaro Copo
• vintage part: Yes
• country of origin: United States

shipping manutransmission:

• transit: 5-11 Days
• class: Standard
• service: USPS Ground Advantage
• type: Calculated
• cost: $94.90
• carrier: USPS

general manutransmission:

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

payments manutransmission:

• wallet: Paypal
• credit card: Mastercard
• other

returns manutransmission:

• policy: No Returns

seller manutransmission:

• rating: 100.0%
• # reviews: 6272
• city: Bantam, Connecticut

offer manutransmission:

• quantity: 1
• started: March 22, 2026
• availability: In Stock
• options: Ship-to-home
• sold: 0

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