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. ...
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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 you have the incorrect transmission, your …
The M22 Rock Crusher would come later to accommodate the heavy twist of Chevrolet's big-blocks in the mid-1960s. The M20 and M21 transmissions produced from 1963-'74 are easy to identify in both …
This gearset was quite noisy and from all indications was called the "Rockcrusher" transmission from the beginning by all Chevrolet and Muncie engineering staff. The 1965 M22 maintained the 10-spline input and 27-spline output as all other Muncie transmissions from that model year.The 1965 M22 also had the drain plug boss drilled …
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, leading to the nickname as the …
The 3925661 number is for all muncies from 1970 until they stopped production in 1974 ... if you take the first gear main gear and divide it by the counter gear for first gear you answer your own question.They called them rock crushers because they are very noisy.They sound like a blower engine winding up in first gear.Dont put to much into …
"Another change for the M22 was the new low helical-angle cut gear set which increased the inner strength of the transmission dramatically. This gearset was quite noisy and from all indications was called the "Rockcrusher" transmission from the beginning by all Chevrolet and Muncie engineering staff."
Many enthusiasts mistakenly refer to all Muncies as Rock Crushers, and this is just not appropriate. While the M21 and M22 did have the same gear ratios, the M22 did utilize a cluster gear with the …
Another change for the M22 was the new low helical-angle cut gear set which increased the inner strength of the transmission dramatically. This gearset was …
NEW Muncie M22 SUPER ROCK CRUSHER 4 speed $2899.00. No Price Muncie Overhaul Kit. ... 1966-1974 Muncies have a 1 inch cluster shaft. Please scroll down for extras (input nut wrench, ... Muncie 1st gear with 36 teeth fits all M20 & M 21 Muncie transmissions 1964-74. From $82.00 .
Because M21 is just a code, later Corvettes or other 4-speed cars didn't have Muncies; those equipped with a Super T10 4-speed could have an M21 or an M20 code. Window and tank sticker resources reveal that there was never an M21 option printed on a sticker before 1966, even though many M21s existed I believe the final-drive ratio determined ...
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 input is a desireable Muncie as it was stronger than earlier Muncie M20s. Be aware that they are also 3/4 inch longer than earlier 27 spline …
An M-22 holds up well. The downside is that it tends to make noise. It will rattle at low rpms and whine at higher rpms. The M22 is called the Rock Crusher. "Dump the Rock Crusher," hot rodders say. People think all Muncie …
The primary purpose of rock crushers is to produce aggregate. Aggregate is a vital material in construction, used in everything from roads to buildings. Understanding the different types of rock crushers and their uses is key to selecting the right equipment for your needs. Types of Rock Crushers There are several types of rock crushers, …
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No Muncies have straight cut gears. The helix angle is less than the 45 degrees on the M20 and M21 but still not straight cut. The best assumption I can come up with about why they are referred to as "rock crushers" is that the design of rock crusher gears uses a higher design factor as compared to other types of geared transmission …
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Many people have guesses about deciphering M-22s. Like grooves in the input shaft and numbers and etc etc... The only way to tell is to open the case and measure the gear angle from the shaft centerline. M-20 and M-21 have 45 degree gears and M-22 have 22.5 degree gears. Fresh M-22s are going for $1300-$1600
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 (M22) transmission. Looks like you have a second design-feb. 28th, 1968, M20 or M21. Definitely not a rock crusher(no straight cut gears).
What Kind Of Muncies? ... I've seen people talk about Muncie M-20's, M-21's, M-22's, M-24's and Stone Crushers. I know they were all four speeds, but what made them different, and what were their specific applications? I'd imagine the M-20's were a lighter duty, probably for a 307's, 350's and low horsepower 396's and the M-22 and M …
Many enthusiasts mistakenly refer to all Muncies as Rock Crushers, and this is just not appropriate. While the M21 and M22 did have the same gear ratios, the M22 did utilize a cluster gear with the gear teeth having different tooth angles. The M22 was designed as a road race transmission, and the straighter angle of the gear teeth …
The name stuck, and like many other nicknames that have occurred in the past, the term Rock Crusher has just stuck, and that's why the M22 is frequently called a rock crusher ----- THUS, ONLY, ONLY, ONLY AND ALL M22 MUNCIES ARE CALLED …
426 Hemi Muncie Rock crusher Bell housing Jump to Latest 3K views 12 replies 9 participants last post by k-star Jul 26, 2006
Put a new rear in with 3.89 gears and now the trans is really making a rackett!! Are Muncies usually noisy? Save Share. Reply Quote Like. Sort by Oldest first Oldest first Newest first Most reactions. G.R. ... i have the m22 rock crusher in my 69 rs camaro with 3.73 gears and it is noisy . Save Share.
This higher level of noise is where the nickname "Rock crusher" originated. There are now aftermarket replacement gears, gear sets and complete reproduction …
Of course, there are also different styles of rock crusherspression-style jaw and cone crushers, for example, fit into the various stations in a crushing circuit (depending on factors like the sizes, varieties, and hardness of the rock you need to crush, as well as the necessary output).
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