Hey, guys. I was wondering if you might be able to help me out. I'm trying to determine at what point the M22 was first called "rock crusher" and who coined the term? I know the M22 first came out in 1965 and its popularity really picked up around 1968. I have a suspicion that rock crusher may...
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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 …
I'm trying to determine at what point the M22 was first called "rock crusher" and who coined the term? I know the M22 first came out in 1965 and its popularity really picked up around 1968.
Muncie Super Duty M23 Upgraded Ultra Case 4-speed Road or Drag Racing Rock-Crusher. SALE EXTENDED!!!
BUT, if no M22 gears were available, then the remaining M22 gears could be replaced with M20-M21 gears, and again, it could be passed off as an M22. Consequently, ONLY, ONLY, ONLY the internal gears inside a Muncie case (ALL M20-M21-M22 cases, of the same vintage, are the same) are what ACTUALLY determine if a Muncie is an M20 …
Muncie M22 REBUILD KITS: Quality parts from our inventory are assembled into kits for rebuilding M22 4 Speeds from 1965 to 1974. Kits are priced at $165.00 freight paid in US only. M22CK 1965-74 All Years. Rebuild Kit includes the following items: Gasket Set; Shift Shaft Seals; Rear Tail Housing Seal and Bushing for both the 27 and 32 Spline ...
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 …
People think the "Rock Crusher" is special or stronger than a standard wide box Muncie. It is special in terms of price but it isn't any stronger. The "Rock Crusher" was built for …
Close ratio Muncies do whine more than wide ratios. The "rock crusher" M22 had gears with a lesser angle on the cut of the gears for greater strength so they make more gear noise than the standard Muncies.
M22 is better, but not dramatically so. All have angle cut gears, the M22 has lesser angles to the gears than the M20/M21 gears is all. View this. The 764 extension housing indicates the transmission has a 32 spline output which all 71 through 74 M20, M21, and M22 Muncies and the 1970 M22 had. A M20 with the 32 spline output and 26 spline …
M22 Rock Crusher. Just bought a 1968 (originally was 427/435..currently has a CE replacement block from 69)) and I believe it has a M22 vice M21. Intent at some point in the near future is to crawl under and check numbers/code. I know it has the factory 411 rear end (Code FB) so that is the first reason I'm thinking it could be a M22- realize ...
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 1963. …
A friend of mine is restoring his 70 SS Camero and found a M22 rock crusher cheap,, it needs work but I have seen certain M22's going for big money on the net and was wondering were and how to read the date code on case,, are certain year M22's worth more then others?
The term "rock crusher" refers to the noise made by the meshing of the strong-er helical gears in the M22. Later model 1971-'74 Muncies are also popular with racers, because these transmissions used a 32-spline output that is stronger than the early 27-spline, and the newer units seem to perform better in high-rpm and high-horsepower applications.
The M22 'Rock Crusher' featured a one-inch countershaft pin bore and shot-peened gears with aggressive helix angles that reduced heat and stress but also increased noise, …
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. From the OEM factories to racetracks to ...
I'm trying to determine at what point the M22 was first called "rock crusher" and who coined the term? I know the M22 first came out in 1965 and its popularity really picked up around 1968.
A VERY, VERY, VERY few Heavy Duty, close ratio Muncies were specially built for severe duty service (such as for the 425hp/396 Corvettes) in 1965. THEY WERE NOT CALLED …
The naysayers are saying "nay", again!! :here!: Now that my TKO 600 is all installed and functioning flawlessly, people are telling me I should have installed a Muncie M22 in my car instead of a TKO 600? I just finished the project, and already I have received this criticism from like 4 different gearheads. They say the old Muncie is bulletproof and …
The early M20 muncies with the 7/8 pin counter shaft had no rings around the input. They are 10 spline input shafts. 95 % of the time these transmissions get confused with the M22. The only way to be 100 percent positive is to pull the side cover and look at the gears.
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 …
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.
Yes,avoid the penn syncromesh man trans oil,its like water/much thinner visc then 80-90 intended for a munice and it designed for todays man trans & not 40 yr old muncies.
Upon getting into the restoration I noticed he had an M21 bellhousing attached to a muncie 4 speed. i called him and asked him if he knew what kind of Muncie it was, he steadfastly said it was an M22 Rock Crusher.
STRONGEST Direct Replacement M22 With NEW Muncie AUTO GEAR Upgraded Ultra CASE With The Strongest M22w WIDE RATIO or Close Ratio Gears for a 4 SPEED TRANSMISSION. A GREAT HEAVY DUTY ROCKCRUSHER FOR YOUR CAMARO, NOVA, CHEVELLE, CORVETTE, GTO,442. THE MAIN CASE IS THE STRONGEST …
M22 had straight cut gears, all other Muncies had helical cut gears. The straight cut gears gave the M22 it's different sound. Other Muncies were quite compared to the M22.
Why is the Muncie M22 called the rock crusher? The reduced gear angle of the M22 created a problem with noise (hence the name "rock-crusher"). Performance seekers decided to live with the noise when the benefits of increased durability from the gear-tooth angle outweighed the gravelly clatter.
The first substantial piece of documentation I found concerning the 1965 M22 transmission was the complete breakdown sheet for all M22 transmissions from 1965 through 1974. …
M22 is better, but not dramatically so. All have angle cut gears, the M22 has lesser angles to the gears than the M20/M21 gears is all. View this. The 764 extension housing …
Also M22 gear sets were of a higher nickel alloy. The straighter angle was designed to produce less end loading of the gear train and less heat but created more noise, thus the nickname "rock crusher".
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. We …
The Gear Box is the source for Muncie Parts like the new assembled M22 SUPER ROCK CRUSHER 4 speed kit with micro super finish or downshift case support.
The M-21 was the 'standard' Muncie 4-speed, and the M-22 was the heavier duty "Rock Crusher" tranny...straight-cut gears made it a noisy trans, hence the nickname.
