Muncie 4 speed....M21, M22, Rock Crusher? | The H.A.M.B.
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.. Kinda nice if you want the Muncie look and an overdrive.. Tony, Jun 26, 2008. SHARE POST #8. Joined: Feb 24, 2006 Posts: 3,479. Profile Page. BrandonB. ALLIANCE MEMBER ...
Muncie Noise!! | Chevy Tri Five Forum
A tired rear bushing will give you a wobble under load ; the M22 "rock-crusher" noise is just in the cut of the gears, and quits once you shift into 4th . M21 Muncie's are fairly quiet till they come unglued .
Complete Muncie Transmission Units | RiversideGear.com
See our selection of M20, M21, M22, and M23 4-Speed Muncie Transmissions for Sale here at RiversideGear.com. Your trusted source for quality Muncie Manual Transmissions and Parts.
Muncie Parts
NEW Muncie M22 SUPER ROCK CRUSHER 4 speed $2899.00. No Price Muncie Overhaul Kit. Complete overhaul kit for Muncie 4 speed transmissions. ... M21 & M22 transmissions, 1963-1974. $65.00 . Muncie Torque Lock Slider 1963-1974 Italian. Muncie torque loc sliders, Italian made. Made off OE blueprints.
muncie m21 vs m22 | Hot Rod Forum
muncie m21 vs m22. Jump to Latest ... I have heard that the m22 "rock crusher" is the best tranny for high horsepower applications. What about the m21? How reliable is a rebuilt m21 in mid to high horsepower …
How to Identify a Muncie Four Speed
Muncie four-speeds were produced in two different ratios: the wide ratio (M20) and the close-ratio (M21). There also was a second, heavy-duty close-ratio version: the "Rock Crusher" (M22) that ...
M-22 "rock crusher"
Based on these 2 factors, the FACTORY installed either a wide or close ratio 4sp (BOTH were M20) to be more compatible with the engine/rear ratio combination. …
Midwest Muncie | Muncie 4 Speed Transmissions …
Recent Comments. Jeff Collins on Muncie Super Duty M23 Upgraded Ultra Case 4-speed Road or Drag Racing Rock-Crusher. SALE EXTENDED!!! Thomas N. on Muncie Super Duty M23 Upgraded Ultra Case 4-speed …
Types of Rock Crushers | Quarry Crushing Equipment | Kemper
The number of crusher types in terms of style and configuration can be more challenging to quantify, as there are lots of ways to customize rock crushers. However, you'll find four …
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. The M20 and M21 transmissions produced …
Muncie 4-speed
The M20 and M21 have the same cut to the gears, the M22 is a straighter cut resulting in a greater strength. Since the M20 and M21 look the same one way to tell them apart (aside from the grooves on the input shaft) is the tooth count on the cluster gear. ... thus the nickname "Rock Crusher" was born. Another misconception is if you have a ...
Muncie 4-Speed Identification Guide
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 ...
Rock Crusher identity | Hot Rod Forum
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 …
Muncie 4 Speed Transmissions
Muncie 4 Speed Transmissions. 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 …
The Story of the Mighty & Majestic Muncie 4 Speed …
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.
M20-M21-or M22 | Chevy Tri Five Forum
This is a 661 case which is the last of the 3 style cases made dated Feb. 1, 1971 and a ratio of C for M-22 2:20 ratio Rock crusher, however these gears are not Rock crusher and must have been changed, they appear to be M-21 gears 2:20 ratio The tailhousing is a 774 which is the large housing that takes the 400 turbo yoke Muncieman
M-22 "rock crusher"
ORIGINALLY, in the beginning of the Muncie evolution, there was the M20(wide ratio) and the M21(close ratio). ... ONLY AND ALL M22 MUNCIES ARE CALLED ROCK CRUSHER! For folks who may not be familiar with the difference in the angles which the teeth are cut in an M20/M21 and and the M22, below is a comparison. The M22 is …
The 1965 Chevrolet M22 Rockcrusher Transmission: The Mystical Transmission
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. ... All 1963-65 M20 and M21 transmission used a 7/8″ countergear pin in all assemblies.
Muncie 4-Speed: The Complete History
Typically, the M20/M21 gearsets have a first-gear helix angle of 26.4 degrees and an input shaft angle of 39 degrees. The reduction in the angle with the M22 is quite substantial. The M22 first gear has an angle of 14.5 degrees and the input shaft is 24.2 degrees.
MUNCIE 4 SPEED TRANSMISSION REPAIRS AND REBUILDS M20 M21 …
Muncie and Borg Warner T10 & Super T10 4 speed transmissions and spares always wanted. Muncie M20 for sale, M21 ready soon and an M22 close ratio transmission available in April/May 2021.
Muncie Calendar Date Codes — D.M.E. Transmissions
1969-1974 codes include a suffix letter at the end to aid in identification of transmission ratios. A = 2.52 1st gear wide ratio M20, B=2.20 1st gear close ratio M21, C = 2.20 first gear Rock Crusher M22. One example code would be ( P0E21 A ) which reads: Muncie four speed aluminum for passenger car, 1970, May, 21st, ratio M20.
Chevy Transmissions: Muncie 4 Speed M22 Rockcrusher..
"Where Our Customers Send Their Friends" 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.
How to Build a Bulletproof Muncie M22 Four-Speed …
The Muncie M22 is known as the Rock Crusher. See how we improve its strength and versatility by adding a Gear Vendors Overdrive. ... the close-ratio M21, and the heavy-duty M22 close-ratio ...
Muncie Identification | The H.A.M.B.
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 …
M21 M22 4 Speed Muncie Manual Transmission
The M21 & M22 is a four speed, RWD or 4WD transmission. The M21 & M22 is a Muncie engineering design, this transmission is aluminum case, extension housing and side cover. The side cover has seven bolts and two shift cams. The synchro rings have 35 teeth and the unit has a 4 step cluster gear. ... Rebuilt Transmission M22 1966-1974 …
How to Identify a Muncie Four Speed
Muncie four-speeds were produced in two different ratios: the wide ratio (M20) and the close-ratio (M21). There also was a second, heavy-duty close-ratio version: the "Rock Crusher" (M22) that was ...
Muncie M21 and M22 Overhaul Kit
M-21 close ratio, and the extra heavy duty close ratio" M-22, also known as the "Rock Crusher". The M-22 was generally installed behind severely powerful (high torque) big-block engines. The M-22 is distinguished from an M-21 by the angle of the gear teeth.
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 identify an M-22 "Rock Crusher," even if it does ...
Muncie 4 speed....M21, M22, Rock Crusher? | The H.A.M.B.
I was just wondering how many different variations there are of the Muncie 4 speed and which ones are best and for what reason (s). I currently have an M22 Rock …