An M22 retains less heat due to its straight-cut gears and the lack of thrust that helical-cut gears create. An M-22 holds up well. The downside is it tends to make noise. It will rattle at low rpms and whine at high rpms. The M22 is called the Rock Crusher. People think all Muncie four-speeds are Rock …
It is a common misconception that all Muncie transmissions are "Rock Crushers", but it is only the M22 that deserves that name. The M20 and M21 were both release in 1963, but it wasn''t until 1965 that the M22 hit the market. The M22 was created for the Corvette Grand Sport racing program. In …
2016-5-10 · Muncie 4 Speed Transmissions and Parts. Muncie Transmission is back! General Motors stopped installing "Muncie" 4 speeds in 1974. Complete units were able to be purchased from GM until the late 1970''s. Parts trickled out of inventory by the late 1980''s. With the quality of used Muncie transmissions …
2021-8-5 · The M22 transmission has a 20 degree helix angle on the gear set as opposed to a 45 degree angle found on the M20 and M21 and were made with 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…
2019-2-5 · ''Usually'', because two different gearsets having identical tooth counts, like the Muncie M21 and M22, have identical frequency profiles. Therefore, it also follows that, wherever the signature ''Rock Crusher'' sound comes from, it can''t be traced back to the frequency profile. Each sound is also loud or soft – it has ''amplitude''.
· M22 had straighter cut gears. Sounds kind of like a gear drive timing set. Unmistakable sound. I don''t know how many people I''ve had tell me "Oh ya this thing has a Rock Crusher (colloquial term for M22) in it. I''ve only heard the sound of the real deal once.
2021-2-9 · The Muncie 4-speed is a constant-mesh transmission. This means that all the gears in the transmission, except for reverse, are always meshed together and spinning, even in neutral. When you shift you are locking a particular-speed gear to the main-shaft. In reality, only three reduction gears correspond to physical first, second, and third gears.
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 the 2.20:1 ratio M21 four-speed.
· I have 67 Camaro with a factory M20 4-speed. The synchronizers are going bad and its time to replace the trans. The engine has been freshly built and pushing 450-500HP I am looking at either a Keisler 5-speed or the legendary M22 Rock Crusher from Midwest Muncie. Can anybody tell me if the M22...
· Transmission has been rebuilt, new fluid. Fired car up Friday and when I let clutch out in netural it has a soft knocking noise. I did not try to drive it. Removed transmission, release bearing and fork are correct. Cranked motor without transmission runs fine, good oil pressure. Aug 6, 2012 #2.
2019-2-5 · SOUND BITES. February 05, 2019. There is a motorcycle manufacturer – you know the one – whose engine and exhaust notes are as jealously guarded as money in the bank. Recently, I had an interesting conversation with an Auto Gear m22 customer who maintained that the whine produced by GM''s ''Rock Crusher'' four-speed was equally valuable.
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. These M22 units are highly sought-after for performance applications. The term "rock crusher" refers to the noise made by the meshing of the stronger helical gears in the M22.
MIDWEST MUNCIE Specializes in ONLY MUNCIE 4-SPEEDS unlike any other transmission builder and has been specializing in restoration and building of Muncie 4 speeds since 1976. It is the Home of the Super Muncie. We offer many high quality Muncie 4 speeds for your 60''s to mid 70''s GM car. High Performance Super M22…
2021-8-15 · Muncie M-22 Rock Crusher Four Speed Transmission - New Internal Parts. Report item. - opens in a new window or tab. Description. Shipping and payments. eBay item number: 113849569201. Seller assumes all responsibility for this listing. Last updated on Aug 15, 2021 10:35:19 PDT View all revisions.
This a BRAND NEW SUPERCASE M22 Muncie Rockcrusher Style Transmission. This is a BEEFY version of the original Rock Crusher transmission. Most all the weak points of an original Muncie have been solved by the Super-Case design. The Supercase has extra …
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. These M22 units are highly sought-after for performance applications. The term "rock crusher" refers to the noise made by the meshing of the strong-er helical gears in the M22.
Dave on Muncie Super Duty M23 Super Case 4-speed Road or Drag Racing Rock-Crusher. SUMMER SALE ON NOW!!! David on Auto Gear Super Case Muncie M22 4-Speed Rock-Crusher, Camaro 4-speed 10/27 or 26/27spl. SUMMER SALE ON NOW!!! Michael Welage on Auto Gear Super Case Muncie M22 4-Speed Rock-Crusher…
The M22 was eventually dubbed the "Rock Crusher". It is a common misconception that all Muncie transmissions are "Rock Crushers", but it is only the M22 that deserves that name. The M20 and M21 were both release in 1963, but it wasn''t until 1965 that the M22 hit the market. The M22 was created for the Corvette Grand Sport racing program.
2014-9-4 · Serial numbers for Muncie 4 speeds always begin with the letter "P". P stands for Muncie Plant. Not for passenger car as some self proclaimed specialists may think. The letter M was used to ID the Muncie plant for the Muncie 3 speed, so P was the next logical letter. The letter O would add confusion since it …
· LS6 Tommy said: You''re both right, the lower angle helix on the gears causes the whine. The gears aren''t stronger, the overall tranny is. The more surface area the gears mesh on, the stronger they are. A high helix gear is stronger, BUT straighter cut gears put less thrust load on the trans case, so the tranny doesn''t undergo as much flex. Tommy.
Michael Welage on Auto Gear Super Case Muncie M22 4-Speed Rock-Crusher, Camaro 4-speed 10/27 or 26/27spl. SUMMER SALE ON NOW!!! Shawn Riley on Muncie Super Duty M23 Super Case 4-speed Road or Drag Racing Rock-Crusher. SUMMER SALE ON NOW!!! Michael OBrien on NEW Auto Gear Super Case Muncie M22 4-Speed Rock-Crusher …
The Muncie 4-speed transmission was used from 1963-1974 on several different GM vehicles and engine types. The Muncie was typically used in performance engines. Changing the oil on these transmissions can be tricky, as the oil-fill port is on the side of the transmission. You will most likely need a hose to fill ...
2021-8-26 · 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. Nowadays there are custom gear ratios and set ups, including M21 wide-ratio and M22 wide-ratio units. You can …
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