How to Identify a Muncie Four Speed
There also was a second, heavy-duty close-ratio version: the "Rock Crusher" (M22) that was offered on some of the high-performance big-block models, starting with the 1965 Corvette.
Identifying Muncie 4-Speeds
Reading Serial and VIN Numbers. Serial numbers for Muncie 4 speeds always begin with the letter "P". P stands for Muncie Plant. The serial number is a date code the transmission was built for a particular year. Serial numbers from 1963 to 1966 included only the month and day. P0101 would indicate January 1st.
Muncie 4-Speed: The Complete History
To understand the evolution of the Muncie 4-speed you have to look at a series of engineering platforms that led to the final design of this transmission. The Muncie design has roots going back to 1935. I took the time to research the patent number that is cast into most Muncie main cases. It is […]
Ultra Pro Super N24 Heavy Duty Muncie 4-Speed. Pro
Joe Gio on Muncie Super Duty M23 Upgraded Ultra Case 4-speed Road or Drag Racing Rock-Crusher. SALE EXTENDED!!! steve cooke on Muncie Super Duty M23 Upgraded Ultra Case 4-speed Road or Drag Racing Rock-Crusher. SALE EXTENDED!!! Mark A Jones Deltona Florida on Auto Gear Upgraded Ultra Case M22Z Rock Crusher 4 …
Brand New SUPERCASE M22 4-Speed Muncie Rockcrusher Style Transmission
This a BRAND NEW SUPERCASE M22 4-Speed Rockcrusher Style Transmission. Each new Auto Gear transmission is built from genuine Auto Gear parts, the highest quality available. This is a BEEFY version of the original Rock Crusher transmission.
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.
M22 transmission numbers decoding | Team Chevelle
Rest of ID 1 42249 makes sense with warranty engine numbering scheme; 1 would be the production year of the transmission and 42249 would just be the serial number of the transmission. As Mike noted, the part number and broadcast code is on the metal tag, 3978766 is a 1970 M22 and WO is the broadcast code found on the build sheet.
How to Rebuild a Muncie Four-Speed Transmission
The Muncie four-speed is as legendary as the cars that it was put into, with the M20, M21, and Rock Crusher M22 models all part of the hot rod vernacular.
Muncie 4 Speeds
Serial numbers for Muncie 4 speeds always begin with the letter "P". P stands for Muncie Plant. ... The serial number is a date code the transmission was built for a particular year. Serial numbers from 1963 to 1966 included only the month and day. P0101 would indicate January 1st. From 1967 to 1968 the serial number got a year designator and a ...
How to Identify a Muncie 4 speed
Reading Serial and VIN Numbers Serial numbers for Muncie 4 speeds always begin with the letter "P". P stands for Muncie. Why.... I have no idea. The serial number is a date code the transmission was built for a particular year. Serial numbers from 1963 to 1966 included only the month and day. P0101 would indicate January 1st.
Chevy Manual Transmission Identification
Further Muncie identification 3 Muncie 4 speeds were offered. The M-20 wide ratio, the M-21 close ratio, and the "Extra heavy duty close ratio" M-22, also known as the "Rock Crusher". The M-22 was generally installed behind severely powerful (high torque) big-block engines. ... an additional letter was added to the plant prefix number to help ...
Mastering GTO Restorations: Transmission Guide
The speed gears are inde¬pendent of the mainshaft. A Muncie 4-speed works best when the synchro assemblies are precisely assembled and work in harmony with the gear cone and slider. The disassembly and assembly of the M-20 is similar to that of the M-21 and the M-22 Rock Crusher.
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.
New Auto Gear Upgraded Ultra Case Muncie HD M22 4-Speed Rock-Crusher
8 reviews for New Auto Gear Upgraded Ultra Case Muncie HD M22 4-Speed Rock-Crusher, Camaro 4-speed 10/27 or 26/27spl. SALE EXTENDED!!! Rated 5 out of 5.
M22-Wide vs M22 "Rock Crusher"
We are restoring a 72 Chevelle SS and would like to use a Muncie "Rock Crusher". Is there anyone out there that and tell me the difference between a Muncie M22W and a M22 Rock Crusher.
Magical Muncie Four-Speed | Hotrod Hotline
A serial number is stamped on all Muncie transmission cases. The code has nine symbols that will reveal the GM division, year, model, assembly plant and car the transmission was used in. ... The M22 is called the Rock Crusher. "Dump the Rock Crusher," hot rodders say. People think all Muncie four-speeds are Rock Crushers, but they're not. ...
Complete Guide to Muncie Transmissions
Many people know about Muncie transmissions and the famous M22 "rock crusher" transmission that has straighter cut gears that allows you to bang the gears without pushing in the clutch.
Identifying Muncie 4-Speeds
1964 to 1968 Muncie 4-speed transmissions can be identified from later models by the way the transmission arms attach. Early Muncie side covers had a stud and the shift arm …
1967
1967 - 1968 Muncie 4 Speed Transmission, M-22 Rockcrusher Complete original GM Muncie transmission rebuilt and guaranteed for 1 year. Correct fit for all 1967 - 1968 model Camaros. This one will have the studs coming out from the side where your shifter linkage mounts, like pictured.
M22 Identification | Team Chevelle
I recently purchased a 70 Chevelle LS5 with an M22. I have the build sheet but there is no S/N for the Transmission. I have researched several Muncie sites and I am stumped by the Case number on my Transmision.
M-22 "rock crusher"
If the transmission is in the car, and there is NOT a part number tag attached to one of the side cover bolts, NO, there is no way to tell if it is an M20,M21, M22. ... they all had that rare 68 chevy with a corvette 327, rock crusher muncie and a 12 bolt posi that they would shift from first to second around 60 mph. jim . Jim 70 chevelle, SS ...
Muncie Parts
NEW Muncie M22 SUPER ROCK CRUSHER 4 speed $2899.00. No Price Muncie Overhaul Kit. Complete overhaul kit for Muncie 4 speed transmissions. ... Just added NEW GM OE style cases casting number (3925660) 1968-70 1" style. From $414.27 . Muncie Tailhousing with Reverse Lever 27 or 32 spline.
Muncie Close Ratio
Mystery Muncie First Gear noise eliminated. Also included are Hand Fitted Synchronizer Sliders and Hubs. If a factory non locking slider is used the transmission will eventually pop out of gear. The hand fitted locking sliders/hubs improves shifting quality through all RPM ranges.
Magical Muncie Four-Speed | Hotrod Hotline
A serial number is stamped on all Muncie transmission cases. The code has nine symbols that will reveal the GM division, year, model, assembly plant and car the transmission …
Midwest Muncie | Muncie 4 Speed Transmissions And …
Home of the world's best 4 speed muncie transmissions and parts. We also offer muncie rebuild kits, racing parts and m22 rock crusher transmissions.
Muncie 4-Speed Identification Guide
Just three types of Muncie 4-speeds are available based on the RPO (regular production option) code used when a car was ordered: the M20 (standard wide-ratio), M21 (close-ratio), and M22 (heavy-duty close-ratio). …
How to Identify a Muncie Four Speed
Identifying The Muncie. ... and the close-ratio (M21). There also was a second, heavy-duty close-ratio version: the "Rock Crusher" (M22) that was offered on some of the high-performance big ...
Muncie four-speeds | The Online Automotive Marketplace
The 2.56:1 ratio is commonly referred to as the M20. Muncie also had a second close-ratio transmission designated M22 and often referred to as the "rock-crusher," which was used behind the highest-performance engines and in Corvettes, the M22 is a highly sought-after performance transmission. It is the heavy-duty version of …
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 higher torque output, and was known as the "Rock Crusher."
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Early Muncie 4-Speed Identification | Ecklers
TRANSMISSION CODE NUMBER IDENTIFICATION. All Muncie 4-speed transmissions were stamped at the Muncie assembly with a code number, consisting of a letter, date, and shift suffix letter where day and night shifts were in operation. Example: P701NP Muncie Assembly Plant. 7 Month of July.
Early Muncie 4-Speed Identification
All Muncie 4-speed transmissions were stamped at the Muncie assembly with a code number, consisting of a letter, date, and shift suffix letter where day and night shifts were …