Originally, identifying the transmissions by external markings was simple. The M20 (wide ratio) trans. had two grooves cut into the 10-spline input shaft and no fill plug in the case, while the M21 (close ratio) had a single groove on the 10-spline input shaft and no fill plug on the case.
Identifying a Chevy four-speed is easy if you know what to look for. If you find one, do you know what it is and if it will fit?
This is the standard Muncie 4-speed case. It has a seven-digit serial number cast into the case on the passenger's side. These are usually the first numbers used to start the identification process. This is Brian Higgins of the SK Tranny Shop. Shops like this are …
Look in the post at the top on the trans fourm. It tells how to pick out what is what but the main thing to look for in a M-22 is the gear angle. Take off the side cover and look at the …
Of the regular production codes, one particular Muncie 4-speed type appears. A properly set up M-22 Rock Crusher transmits up to 700 hp, so this stout transmission is a wise choice for high …
A close look at the Chevrolet Muncie M20, M21, and M22 four-speed transmissions.
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.
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.
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 not have a …
32. . All 67-74 Muncies carry a producion code number stamped vertically on right side of case beginning with "P". (example: P7A14 - Muncie 1967, Jan 14) Muncies assembly codes are model year. (example: P8R23 is assembled Oct 23, 1967 for 1968 model year. Some Muncies also carry ratio I.D.
Although some claim that the M23 is a 'rock crusher', it is indicated that this box was assembled in both wide and close ratio components and also with straight cut gears …
Identifying An M22 Rock Crusher. Identifying an m22 rock crusher muncie identification the hamb feb 21 2010 although some claim that the m23 is a rock crusher it is indicated that this box was assembled in both wide and close ratio components and also with straight cut gears common to the rock crusher m22Sep 18, 2020 Tell M22 Rock …
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 …
In the block labeled Trans on my original buildsheet the letters WD are present. This is the same tag that would have been attached to the 1972 wide-ratio Muncie.
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 …
Muncie 4 Speeds. Important Notes. Some input shafts produced by the aftermarket and General Motors have no identifying rings on them. The rings originally corresponded with rings or grooves on the counter gear so that the assembler matched a one or two ring input with a one or two ring cluster. When manufacturing was stopped, GM stopped making ...
m22 rock crusher trans identifying features. 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.
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The Corvette was originally equipped with a Muncie four-speed but the transmission was missing when we bought the car. I know we will probably never find the original transmission but I would like ...
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Having issues diagnosing problems with your M21 M22 4 Speed Muncie Manual Transmission? we can help.
The Muncie M22 is known as the Rock Crusher. See how we improve its strength and versatility by adding a Gear Vendors Overdrive.
Originally, identifying the transmissions by external markings was simple. The M20 (wide ratio) trans. had two grooves cut into the 10-spline input shaft and no fill plug in the case, while the M21 (close ratio) had a single groove on the 10-spline input shaft and no fill plug on the case. The M22 had no grooves on the input shaft and was the only …
Early Muncie 4-Speed Identification. By: Alan L. Colvin. The Muncie has been the most transmission among the hot rodding set since its inception in 1963. The Muncie was used in all high applications until the Borg-Warner Second Design Super T-10 began replacing it in 1974. We want to clarify all information on the Muncie in the years 1963-65 ...
The Muncie 4-speed transmission is a legend among fans of GM muscle cars. For a 10 year period starting in the golden age of 1960s performance, General Motors' Muncie, Indiana transmission factory churned out several different flavors of this manual gearbox. This imprinted the name on the brains of drag racers and high performance …
Muncie 4 Speed Transmissions. Identifying Muncie 4 Speeds II by Paul Cangialosi. Muncie 4 Speed Rebuilding DVD is available now. Click here for information. Paul's Intro Many people are always calling me or asking me at shows on how to identify Muncie 4 speeds. Not too many people actually know what type Muncie they have and most …
Identifying Muncie 4-Speeds. Several things are needed to identify a Muncie correctly. The first is a main case casting number. Second a count of the input shaft and output shaft splines and if any rings or grooves exist around the input shaft splines. Third are date codes and VIN numbers that help confirm that the above case and gears belong ...
The most popular question has to be that everyone thinks they have the famous "rockcrusher" M22 4 speed. 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 …
M22 rock crusher Trans identifying features - Gulin Machinery. What to look for: hunting down, Muncie M22 4 Speed Transmission | eBay Muncie M22 4 Speed Transmission See all results Share .
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. Can you help identify if it is truly an M22. The number reads 3925856 (or possibly 3925858) All the sites I have visited are telling …
An inside look at the N-series M23 four-speed manual transmission from Auto Gear Engineering and an interview with designer George Sollish.
Identifying Muncie 4- Speeds. Several things are needed to identify a Muncie correctly. The first is a main case casting number. Second a count of the input shaft and output shaft splines and if any rings or grooves exist around the input shaft splines. Third are date codes and VIN numbers that help confirm that the above case and gears belong ...
The original post said "without pulling it from the vehicle" Thus the request for any/all numbers on the trans to Help identify it. After 35 yrs, anything could have happened to these tranys.
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.
