Times and requirements have changed making both the M21 and M22 the closest ratio production 4 speeds ever produced but also not practical for today's driving habits unless road racing is your thing. The new Muncies being built today have some better ratios.Today's examples of the new car gear set ups are Mustang GT's with a 3.35 1st gear and 3 ...
Aug 03, 2018· 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 ...
Aug 07, 2018· 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 wide- and close-ratio units. The M22 to come later in 1967-'74 is also a close-ratio unit, but much stronger than the M21, with a higher torque ...
Nov 09, 2014· The m22 "rock crusher" was/is the most sought after because it was the strongest. Back in the day I had one in my '72 SS 454 Chevelle; it took a lot of abuse. There is a lot of info on the net on how to identify which one you have, however, for your application any one of them in proper mechanical condition will be just fine.
Muncie 4 Spd Car M22 "Close Ratio" Gear Kit This M22 Gear kit will have a 1" Countershaft pin, 16 Spline input, Close Ratio 2.20 1st gear. The kit will include the Input shaft (4th gear), Countershaft, 1st gear, 2nd gear, 3rd gear, and Reverse Idler. Input- 26 Tooth 26 Spline Close Ratio Counter Shaft- R27-22-19-17 Big 1" Pin Close Ratio 1st Gear- 36 Tooth 2nd Gear- 30 …
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. The reverse gears are helical cut and are located ...
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Aug 07, 2018· 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 ...
How To Identify A M22 Rock Crusher It Still Runs. An M22 Rock Crusher is a Muncie fourspeed 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 ...
Apr 01, 2010· i did mine on my back in the garage... (i WISH i had a lift!!!) i just didnt want to take the torshion bars loose, support the front of the truck, fight the torsion bars out, unbolt the cross member wrestle that out of the frame, support the trannmission and t-case, THEN have to put it all back togeather! i work for as a heavy equipment tech we have flat rates too, thats why i …
Jun 13, 2017· The M22 Rock Crusher used a gearset that features less of an angled-tooth gearing (right). Images courtesy chevelles.com. The ratio of the four-speed transmission placed in any car was usually determined by the engine size and rearend axle ratio. If a car came with an axle ratio of 3.73 (or numerically higher), it usually came with a close ...
Freekish Blues M22 Rock Crusher OverDrive Pedal Excellent New Condition! You are bidding on a Freekish Blues M22 Rock Crusher OverDrive Pedal. Information and Clips at: As New No Issues w/o Box-Did not come with instructions. Sorry for the quality of the pics. The pedal has a sparkle finish that makes it hard to photograph.
Performance Built Muncie M22 Rock Crusher 4 Speed Transmission. This unit has been rebuilt at our state of the art facility. We have carefully engineered a process that allows us to bring you a product we can stand behind. This is a direct replacement for the following Chevrolet,Oldsmobile, Buick, and Pontiac vehicles. Compatible Vehicles ...
Oct 07, 2014· 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.
Mar 25, 2010· 2,314 Posts. #6 · Jan 24, 2010. You have to pull the cover & look at the gears to see if it's really a "rock crusher" I wish I had a buck for every guy who thought he had one when all it was was one of the later Muncies with the fine spline input shaft & TH 400 style output. Last real M22 I sold was 10 years ago and I got $1200 for it.
The replacement case (GM PN 3925659) was used for all 1966– 1974 Muncies as listed in the GM AC DELCO 1978 service parts manual. It was a 3925661 casting. If you have to replace an early 7/8-inch case, a later casting is offered with the thick ears but machined for the early shaft.
Muncie M22 4 Speed Rock Crusher NEW Gear Set. M22 Close Ratio 2.20. 1-Input Shaft 10 Spline. 1-3rd Gear. 1-2nd Gear. 1-1st Gear. 1-Cluster Gear 1" Bore. 1-Idler Gear. Free Lower 48 States Shipping. Please know that your positive feedback and 5 star rating on eBay to us is appreciated, vital and very valuable to the continued success of our ...
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.
STRONGEST Direct Replacement M22 With NEW Muncie AUTO GEAR SUPER CASE With The Strongest M22w WIDE RATIO or Close Ratio Gears for a 4 SPEED TRANSMISSION. A GREAT HEAVY DUTY ROCKCRUSHER FOR …
M22: Borg-Warner Super T10 iron case: ... For example, a '65 Corvette "Rock Crusher" M22 4-speed will bolt up to a 58 Pontiac bell housing. Of course you have to be concerned about drive shaft length, yoke interface to tailshaft, linkage, speedometer cable length, etc. But the transmission bolts up to the bell housing.
Sep 15, 2010· To manufacture the M22, the #3851325 case had to be drilled out to 1″ to accept the special countershaft pin. A new maincase was not to be released until the start of the 1966 model year. Since the Muncie transmission …
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" was born.
Sep 20, 2021· 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: 1. Seller assumes all responsibility for this listing. Last updated on Aug 15, 2021 10:35:19 PDT View all revisions.
Sep 24, 2021· 4spd Muncie M22 "Rock Crusher" manual transmission NP205 New Process "gear driven" transfer case. CURRIE Ford 9" style horizontally braced Rear End with Auburn Brand locker, Wilwood Disc Brakes Full cage inside, including fab'd aluminum dashboard with Auto Meter liquid filled guages.
Dec 05, 2009· The M22 is the "rock-crusher" the M21 is the regular Muncie. Don ... The second time it happened it destroyed the case now I run a Turbo 400 built with T/brake reverse manual valve body, no problems since ... does he realy have one cause they are worth about 50 grand ??? a m21 would work but the m22 "rock crusher" is what they came with.....
Feb 08, 2006· M22 synchros I thought there was no difference too, but when it came time to o/haul my first ROCK CRUSHER I ordered a standard bearing kit and synchros. I was young, uninformed and thought I had a c/r m21 with a bad input bearing. I couldn't use the synchros supplied, took them back to pos with a gear promptly recieved a history lesson in muncies.
The 2.20:1 ratio is commonly designated as the Muncie M21 transmission. The 2.56:1 ratio is commonly referred to as the M20. 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.
An M22 retains less heat due to the straight-cut gear design and the lack of thrust that helical-cut gears create. 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.
GK-M22 Muncie M22 4 Speed Rock Crusher Gear Kit - Input Cluster 1st 2nd 3rd Idler Gear Muncie 4 Spd Car M22 "Close Ratio" Gear Kit 10 Spline Input This M22 Gear kit will have a 1" Countershaft pin, 10 Spline input, Close Ratio 2.20 1st gear. The kit w
transfer case & parts Midwest Transmission Inc. a supplier of rebuilt transfer cases guaranteed best quality since 1996. As an industry leader we offer only highest quality guaranteed performance full-line of (foreign, domestic, 4×4 and Rear Wheel Drive (RWD) transfer cases.
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