Muncie 4-Speed Identification Guide
Serial numbers for Muncie 4-speeds always begin with the letter "P," which stands for Muncie Plant (not "passenger car.") "M" and "N" were used to identify 3-speed Muncies; "O" identifies the Saginaw 3-speed with overdrive. Serial numbers from 1963 to 1966 included only the month and day. For example, P0101 indicates January 1.
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Muncie M22 4 Speed Transmission Rock Crusher Complete Package …
item 4 Muncie Close Ratio - M-22 Rock Crusher Four Speed Transmission - ALL NEW GEARS Muncie Close Ratio - M-22 Rock Crusher Four Speed Transmission - ALL NEW GEARS. $2,695.00. Last one +$110.00 shipping.
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Muncie Calendar Date Codes — D.M.E. Transmissions
For example P7C05 will read: Muncie four speed aluminum for passenger car 1976, March, 5th. 1969-1974 codes include a suffix letter at the end to aid in identification of transmission ratios. A = 2.52 1st gear wide ratio M20, B=2.20 1st gear close ratio M21, C …
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NEW Muncie M22 SUPER ROCK CRUSHER 4 speed $2899.00
Muncie Parts > NEW Muncie M22 SUPER ROCK CRUSHER 4 speed $2899.00. NEW Muncie M22 SUPER ROCK CRUSHER 4 speed $2899.00. View Images. Price: No Price: Sale Price: …
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American Chevy Muncie – M20, M21, M22 | Allstate Gear
This reduces heat retention and exerts less thrust on the shafts, so the transmission can take more abuse. This design creates the distinctive low-RPM rattle and high-RPM whine the Rock Crusher is known for. Gear ratios are the same as the close-ratio M21. The Muncie four-speed was used in a wide range of GM products through the 60s and 70s.
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How to Identify a M22 Rock Crusher
An M-22 "Rock Crusher" is a Muncie four-speed transmission for cars made by General Motors in the 1960s. Identify a transmission type correctly before fitting it into your car. If you have the incorrect transmission, your car may not function properly. You can identify several unique signs that identify an M-22 "Rock Crusher," even if it does ...
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Auto Gear Upgraded Ultra Case M22 Rock Crusher 4-speed.
STRONGEST Direct Replacement M22 With NEW Muncie AUTO GEAR ULTRA CASE With The Strongest M22z WIDE OR CLOSE RATIO 4 SPEED TRANSMISSION. A GREAT HEAVY …
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Muncie M22 Rock Crusher Four Speed Transmission with ALL …
Inquire Within. Shipping for the Transmission is also available for $100 within the US excluding Hawaii and Puerto Rico. For sale is a Factory Replica of the Close Ratio Muncie Rock Crusher Four Speed Transmission typically used in High Performance 1965 to 1981 Corvette`s, Camaros, Chevelles, Nova`s, El Camino`s, Impala`s, Oldsmobiles and Pontiacs.
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Muncie 4-speed Transmissions
Even after 45 years, the Muncie four-speed is still a very popular transmission with Chevrolet muscle car enthusiasts, and it is easily adaptable to a wide range of GM and other non-GM vehicles. It debuted in 1963 Chevrolet full-size cars and ... The term "rock crusher" refers to the noise made by the meshing of the strong-er helical gears in ...
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GENERAL MOTORS MUNCIE 4-SPEED MANUAL …
GENERAL MOTORS "MUNCIE" FOUR SPEED 10-1-01 10 C8 Idler Gear (Front) L18-s27T: except M22 3831762 WT297-10 L18-s27T: M22 'Rock Crusher' 3879997 WT297-10B C9 Idler Gear Assy (Rear) L17-27T 3831764 AWT297-10A C10 Idler Gear (Rear) Thrust Washer all 3774909 3774909 C11 Idler Shaft all 3831761 WT297-35 C12 Idler Shaft Lockpin all 590832 590832
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1967
GM Muncie transmission rebuilt and guaranteed for 1 year. Correct fit for all 1967 - 1968 model Chevelles and Novas. This one will have the studs coming out from the side where your shifter linkage mounts. This is the Muncie M-22 Rockcrusher four speed. Designed for the highest performance models.
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Muncie M22 Rock Crusher 4 Speed Transmission for sale | eBay
Muncie Close Ratio - M-22 Rock Crusher Four Speed Transmission - ALL NEW GEARS. Opens in a new window or tab. Remanufactured. 5.0 out of 5 stars. 11 product ratings - Muncie Close Ratio - M-22 Rock Crusher Four Speed Transmission - ALL NEW GEARS. $2,695.00. Buy It Now +$110.00 shipping. Last one.
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Muncie M22 Rock Crusher Four Speed Transmission
Muncie M22 Rock Crusher Four Speed Transmission with ALL new internal parts. Prices starting @ $2395. [hidden information] Shipping no problem. Many versions available to match your existing worn out transmission. Click on the link below this will take you to my store where you can see which version best suits your needs. Six one zero seven one ...
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NEW Auto Gear Upgraded Ultra Case Muncie Heavy …
AG Roller Side Cover. A great Super Heavy Duty 4-speed for your Camaro, Nova, Chevelle, Corvette or other GM car. Close Ratio = 2.20-1st, 1.64-2nd, 1.28 …
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The Muncie 4 Speed Transmission Taught A …
The twist was the four-speed gearbox found in the first two generations of the Chevrolet Corvette—the BorgWarner T10—had in fact been built using plans supplied by a GM engineer named James Fodrea, based on …
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How To Identify Chevy Four-Speed Transmissions
The Muncie four-speed was produced in two ratios: the wide ratio (M20) and the close-ratio (M21). That being said, there was a second, close-ratio version (M22) that was developed to survive duty behind engines with a …
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Chevy GM Muncie M22 Rock Crusher Wide Ratio 4 Speed Transmission …
item 3 Muncie Close Ratio - M-22 Rock Crusher Four Speed Transmission - ALL NEW GEARS Muncie Close Ratio - M-22 Rock Crusher Four Speed Transmission - ALL NEW GEARS. $2,795.00. Last one +$100.00 shipping.
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Muncie M22 Rock Crusher Four Speed Transmission
Muncie M22 Rock Crusher Four Speed Transmission with all new internal parts. Several varieties to choose from. Click on the link to my store and view all options including hard to find parts. Purchase direct off eBay and get free shipping in lieu of $100 discount. Shipping to all states Hawaii and Alaska ok too but additional cost.
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Muncie M22 4 Speed Transmission Rock Crusher Close Ratio …
Muncie M22 4 Speed Transmission, rock crusher heavy duty with all new gears, close ratio 2.20 1st gear, remanufactured with attention to detail and professional assembly, …
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Inside the N-series M23 Transmission from Auto Gear Engineering
An inside look at the N-series M23 four-speed manual transmission from Auto Gear Engineering and an interview with designer George Sollish. ... and the M22 "Rock Crusher" in three ratios (2.20:1 ...
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1969
1969 - 1973 Muncie Four Speed Transmission M-22 Rockcrusher Complete original GM Muncie transmission rebuilt and guaranteed for 1 year. Correct fit for all 1969 - 1973 model Chevelles and Novas. This one will have the holes on the side where a bolt will secure your shifter linkage levers. This is the Muncie M-22 Rockcrusher four speed.
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Auto Gear Upgraded Ultra Case M22Z Rock Crusher 4-speed.
STRONGEST Direct Replacement M22 With NEW Muncie AUTO GEAR ULTRA CASE With The Strongest M22z ULTRAWIDE RATIO 4 SPEED TRANSMISSION. A GREAT HEAVY DUTY ROCKCRUSHER FOR YOUR CAMARO, NOVA, CHEVELLE, CORVETTE, GTO,442. THE MAIN CASE IS THE STRONGEST MADE with fill and drain plugs. C355 Forged Aluminum Mid …
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How to Identify a Muncie Four Speed: Build Date Codes
Last time we talked about how to distinguish a Muncie four-speed transmission from a Saginaw or BorgWarner and the different types of Muncie transmissions, including the wide-ratio M20, the close ...
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Muncie four-speeds | The Online Automotive Marketplace
An easier solution would be to find one of the more standardized 2.52:1 or 2.20:1 Muncie four-speeds that were used from 1966-'74. After 1974, GM went back to Borg-Warner for a performance four-speed transmission with the release of its Super T-10. The following vehicles are likely sources of a Muncie four-speed.
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Muncie M22 4 Speed Transmission Rock Crusher Close Ratio …
Muncie M22 4 Speed Transmission, rock crusher heavy duty with all new gears, close ratio 2.20 1st gear, remanufactured with attention to detail and professional assembly, the case was cleaned and blueprinted to OEM specifications, 1" counter bore with proper leak free interference fit, new gears, synchronizers, bearing retainer, major overhaul kit, 10 spline input …
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NEW Auto Gear Upgraded Ultra Case Muncie Heavy Duty M20 or M21 4-Speed
C355 Forged Aluminum Mid-Plate. Super Tail. AG Roller Side Cover. A great Super Heavy Duty 4-speed for your Camaro, Nova, Chevelle, Corvette or other GM car. Close Ratio = 2.20-1st, 1.64-2nd, 1.28-3rd, 4th direct. ... RACING Muncie Slick Shift Clutch-less Super Duty M23 Upgraded Ultra Case 4-speed Drag Racing Rock-Crusher. 2025 Spring SALE ...
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The 1965 Chevrolet M22 Rockcrusher Transmission: …
Across the top of the page are the words "First Build 4/15/65 – 1st Shipment 4/19/65, recap of M22 (Rock Crusher) Trans." ... On this document the 4 speed transmission option code listed the transmission as an M20. In 1965, …
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An LS6 and a "Rock Crusher" four-speed are just icing …
Nevertheless, the original purchaser of this machine opted for the traditional four-speed—another GM pinnacle, the Muncie M22 rock crusher. The M22, a close-ratio box, was so called because of the reduced angle on which …
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Muncie 4-Speed: The Complete History
This "layout" is a 4-speed transmission with four forward gear ratios in the main case, a midplate bearing support, and a reverse gearset in the extension housing. This Tech Tip is From the Full Book, MUNCIE 4-SPEED TRANSMISSIONS: HOW TO REBUILD AND MODIFY. For a comprehensive guide on this entire subject you can visit this link:
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