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Rock Crusher Transmission Codes

YEARONE Blog Updates: GM Muncie 4-Speed Decoding

Dec 09, 2009 · M-22 "Rock Crusher" Identification The M-22 close-ratio transmission is easily identified internally from the M-20 and M-21 versions by the angle of the gear teeth. The M-22 was only produced in a close-ratio version, so it will not appear on models with high rear-axle ratios (3.55 or lower numerically) unless someone has changed it.

Muncie 4 Speed Transmissions

This had the same gear ratios as the M21 but with a heavy duty gearset. The reason you may ask? Well it wasn't designed so that you could go drag racing on Saturday night or impress in front of Burger King by doing massive hole shots. It was primarily designed as a road race transmission.

It's Worn • Guide to Muncie M20, M21, and M22 Four-Speed.

The M22 Rock Crusher would come later to accommodate the heavy twist of Chevrolet's big-blocks in the mid-1960s. . (i.e., A=M20) (This code was added to identify ratios. Some early 1969 transmissions did not have this code. A=M20 B=M21, C=M22) The post Guide to Muncie M20, M21, and M22 Four-Speed Transmissions appeared first on Hot Rod Network.

Muncie Identification | The H.A.M.B.

Feb 21, 2010 · The most well known Muncie transmissions are the M20(wide ratio), M21(close ratio), and the M22(rock crusher). Although not mentioned much, there was also an M23 transmission that was used, beginning in 1970. The M23 is recognized by a 26-spline(fine) input shaft and a large output shaft that requires a T-400 driveshaft yoke.

muncie rock crusher code numder - rhinoart

Muncie 4speed Transmissions Indiana's. Muncie 4speed Transmissions from Hemmings Motor News . is usually referred to as the Muncie M21 transmission; based on GM's production codes. . The term "rock crusher" refers to the noise made by the meshing of the stronger . 1963'65 M20 :1 ratio 10spline 7/8inch shaft no grooves 27spline output shaft

decode on rockcrusher transmission

Locate the transmission code. According to Teufert's GM turbo 350 transmission page, the code for 1969 to 1972 transmissions is on the passenger side accumulator cover. The accumulator cover is a small, round dome-shaped cap, located in the middle of the transmission. . details about new muncie m22 4 speed transmission rock crusher 4 .

Muncie M22 4 Speed Rock Crusher Gear Whine - YouTube

Sep 03, 2015 · A video with better audio of the nostalgic sound of a Muncie M22 (Rock Crusher) transmission at work in a 1966 Chevrolet Chevelle.

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rock crusher transmission codes - pinkybnb. rock crusher transmission codes . Rock Crusher Transmission Codes machinetoolindia. muncie transmission info Grumpys PerformanceThe serial number is a date code the transmission was built for atrain and less heat but created more noise, thus the . Read More; rock crusher transmission .

M22 Rock Crusher - 4 Gear Trans Co

Muncie M22 "Rock Crusher 4 SPEEDS FROM 1965 TO 1974: This page is devoted to OEM Complete units; New aftermarket units and OEM parts and NOS parts. We .

NEW Auto Gear Super Case Muncie M22 4-Speed Rock-Crusher .

New Super Heavy Duty Direct Replacement and Strongest M22's Made With Muncie Auto Gear Super Case and Strongest M22 Close Ratio or Wide Ratio Gears. 26 spline input and large 32 spline output shaft. C355 Forged Aluminum Mid-Plate. Super Tail. AG Roller Side Cover. A great Super Heavy Duty Rock Crusher M22 for your Camaro, Nova, Chevelle, Corvette or other GM car.

How to Identify a M22 Rock Crusher | It Still Runs

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 .

Muncie 4-speed Transmission (Group 4.000)

The 2.20:1 ratio first gear is usually referred to as the Muncie M21 transmission; based on GM's production codes. The 2.56:1 ratio is referred to as the M20. Muncie also had a second close-ratio transmission coded M22 and known as the "rock crusher," which was used behind performance big-block engines and in some Corvettes.

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MUNCIE 4 SPEED TRANSMISSION REPAIRS, REBUILDS AND PARTS .

muncie 4 speed transmission repairs, rebuilds and parts m20 m21 m22 rockcrusher gearboxes We rebuild and repair Muncie and Saginaw 4 speed gearboxes. We also supply new and used spares.

It's Worn • Guide to Muncie M20, M21, and M22 Four-Speed.

The M22 Rock Crusher would come later to accommodate the heavy twist of Chevrolet's big-blocks in the mid-1960s. . (i.e., A=M20) (This code was added to identify ratios. Some early 1969 transmissions did not have this code. A=M20 B=M21, C=M22) The post Guide to Muncie M20, M21, and M22 Four-Speed Transmissions appeared first on Hot Rod Network.

How to Identify a Muncie Four Speed - Hot Rod Network

Jul 05, 2016 · The Corvette was originally equipped with a Muncie four-speed but the transmission was missing when we bought the car. . duty close-ratio version: the "Rock Crusher" (M22) that was offered .

Guide to Muncie M20, M21, and M22 Four-Speed Transmissions

Aug 07, 2018 · GM's goal with the Muncie four-speed was to produce a better shift employing larger synchro cones. He tells us both the M20 wide-ratio and M21 close-ratio transmissions were first offered in .

Mastering GTO Restorations: Transmission Guide

Apr 17, 2015 · The 1971 transmissions were the same as from previous year, except that the M-21 close-ratio 4-speed transmission was replaced with a stronger version of the Mun­cie close-ratio gearbox the famous M-22 "Rock Crusher" 4-speed. It was the strongest 4-speed manual ever installed in a GTO. This lineup remained unchanged in 1972.

M22 Rock Crusher - 4 Gear Trans Co

Muncie M22 "Rock Crusher 4 SPEEDS FROM 1965 TO 1974: This page is devoted to OEM Complete units; New aftermarket units and OEM parts and NOS parts. We .

How to Identify a 350 Transmission | It Still Runs

Locate the transmission code. According to Teufert's GM turbo 350 transmission page, the code for 1969 to 1972 transmissions is on the passenger side accumulator cover. The accumulator cover is a small, round dome-shaped cap, located in the middle of the transmission.

1970 Chevrolet Corvette C3 Production Statistics and Facts

The RPO ZR1 option included the LT1 engine, M22 (Rock Crusher) transmission, heavy-duty power brakes, transistor ignition, special aluminum radiator, and special springs, shocks, front and rear stabilizer bars and metal fan shrouds. The relatively low production in 1970 was caused by a labor dispute that started in May of 1969.

Camaro Transmission Information & Restoration

An Automatic transmission was optional on any Camaro from 1970 to 1981. The transmission usage was dependant upon which engine was being ordered. This page will describe general transmission information. You can find specific transmission usage under the "Power Teams" section in the yearly Camaro information.

Muncie Identification | The H.A.M.B.

Feb 21, 2010 · The most well known Muncie transmissions are the M20(wide ratio), M21(close ratio), and the M22(rock crusher). Although not mentioned much, there was also an M23 transmission that was used, beginning in 1970. The M23 is recognized by a 26-spline(fine) input shaft and a large output shaft that requires a T-400 driveshaft yoke.

muncie rock crusher 4 speed transmission - accinsa

Chevy Transmissions: Muncie M22 "Rock Crusher 4 Speeds were made From 1965 TO 1974: The most popular transmission of it's time for high performance cars built for Chevrolet and all performance oriented G.M cars. They have the same gear ratios as the legendary M21 but with a heavy duty gearset.

Muncie 4 speed..M21, M22, Rock Crusher? | The H.A.M.B.

Mar 30, 2009 · That's where the 'whine' come's from with those transmission's.. Also, there's companies out there that are making new gear set's for Muncie's as well..not just stock replacement stuff either. You can outfit an M20 or M21 with Rock Crusher type gears, OR actually make a 3 speed O/D out of a 4 speed case. Forth being the overdrive obviously..

The 1965 Chevrolet M22 Rockcrusher Transmission: The .

Sep 15, 2010 · 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." By comparing these M22 transmission assemblies to Chevrolet's 1965 transmission identification codes, I found a perfect match.

decode on rockcrusher transmission - thedugong

1971 Chevrolet Corvette C3 Production Statistics and Facts. This was the last year for the M22 "Rock Crusher" heavy duty transmission. It was named the "Rock Crusher" because of the sounds it .

Muncie four-speeds | Hemmings Daily

Sep 23, 2018 · 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.

Muncie M22 Rockcrusher Transmission For Sale

Performance Built Muncie M22 Rock Crusher 4 Speed Transmission. This unit has been rebuilt at our state of the art facility. We have carefully engineered a process that allows us to bring you a product we can stand behind. This is a direct replacement for the following Chevrolet,Oldsmobile, Buick, and Pontiac vehicles. Compatible Vehicles .

decode on rockcrusher transmission - thedugong

1971 Chevrolet Corvette C3 Production Statistics and Facts. This was the last year for the M22 "Rock Crusher" heavy duty transmission. It was named the "Rock Crusher" because of the sounds it .

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