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 crusher in my '56 Chevy pickup, and have another M22 that was rebuilt about 6 years ago by my father but never used. I also have what I believe is an M21, but I'm not certain.
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Muncie shifter shafts have evolved in three basic stages. From the left, the small 5/16-18 threaded stud, which snapped easily. The newer 3/8-24 stud still had to fit the rectangular keyway of the linkage arm, and so it had flats milled on each side, but they still broke. The last revision was a bolt-on shaft using a standard 3/8-16 threaded ...
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Transmission, Manual, 1971-74 GM, Muncie M22, 2.20 1st. Remanufactured 4-speed manual transmissions are now available from OPGI. Each transmission is disassembled, cleaned and inspected to ensure an outstanding final product. Each transmission features top-quality components throughout, as well as premium seals and gaskets for a leak …
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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. The …
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I have a suspicion that rock crusher may have first been used in a late-1960s auto magazine test drive, but was hoping the historians in this group might be able to narrow it down. ... 68-9, 70-74) ALLLLLLLLLLLL Muncie cases had the SAME casting number, REGARDLESS if it was an M20 or an M21 or an M22. The casting number has …
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NEW Muncie M22 SUPER ROCK CRUSHER 4 speed $2899.00. No Price Muncie Overhaul Kit. Complete overhaul kit for Muncie 4 speed transmissions. ... Muncie 1st gear with 36 teeth fits all M20 & M 21 Muncie transmissions 1964-74. From $82.00 . Muncie M22 1st gear 36 tooth Italian or Korean.
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from Southern Ok. ""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 …
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On the left is the M20 countershaft and 10-spline input shaft. In the middle is the M21 countershaft and input shaft. On the far right is the M22 26-spline input shaft. In the 1970s, virtually all Muncie four-speeds had 26-spline input shafts. 8. The M22 Rock Crusher 26-spline input shaft sports a wider gear for greater torque capacity.
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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 …
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come guys, every gearhead knows every muncie is a rock crusher, every 327 came out of a corvette and all 12 bolts are posi's! I didn't even read this on the internet, 70% of the guys at the gas station tells me this when I'm gassing up, they all had that rare 68 chevy with a corvette 327, rock crusher muncie and a 12 bolt posi that they would ...
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Garry Brown on Super Pro Road/Race Muncie Upgraded Ultra Case M22 Rock-Crusher. SALE EXTENDED!!! Michael wilhelm on Auto Gear …
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If you are replacing a 27 spline Muncie M-20 or 21 your existing shifter will swap over. Mystery Muncie First Gear noise eliminated. This is about as close to a factory supplied transmission as you can get. …
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Muncie M-22 Rock Crusher Four Speed Transmission - RARE Drivers Side Speedo . Opens in a new window or tab. Remanufactured. 5.0 out of 5 stars. 7 product ratings - Muncie M-22 Rock Crusher Four Speed Transmission - RARE Drivers Side Speedo . $2,495.00. Buy It Now +$100.00 shipping. Last one.
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7 product ratings - Muncie M-22 Rock Crusher Four Speed Transmission - RARE Drivers Side Speedo . $2,495.00. Buy It Now +$100.00 shipping. Last one. 143 sold. derosnopS. naz130 (5,266) . Professionally Built 1966 /1967 Muncie M22 Rock Crusher 4 Speed 2.20 Close Ratio. Opens in a new window or tab.
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On tranny's that have no grooves around the splines deserve a look inside for the gears that are almost straight (very little angle to them compared to other muncies) These are 2.20 1st gear Muncie M-22 trannies. (Also known as the Rock Crusher due to the whining sound these trannies make while upshifting 1st thru 3rd gears due to those ...
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This a BRAND NEW SUPERCASE M22 4-Speed Muncie Rockcrusher Style Transmission. Each new Auto Gear transmission is built from genuine Auto Gear parts, the highest quality available. This is a BEEFY version …
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WEBAn 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 …
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The Gear Box is the source forMuncie Partslike the new Muncie M22 Rockcrusher Close, Wide and NEW Extra-Wide Ratio Gear Set, Italian or Korean made. The Gear Box Transmissions. Muncie-Tremec-Saginaw-TKO-Top Loader-Richmond. Home: View Cart: Muncie Kits & Parts: T56: T56 Corvette GTO CTSV: TR6060 / T56 Magnum: T10: …
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1967 - 1968 Muncie 4 Speed Transmission, M-22 Rockcrusher Complete original GM Muncie transmission rebuilt and guaranteed for 1 year. Correct fit for all 1967 - 1968 model Camaros. This one will have the studs coming out from the side where your shifter linkage mounts, like pictured. This is the Muncie M-22 Rockcrusher four speed.
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We also offer muncie rebuild kits, racing parts and m22 rock crusher transmissions. ... Garry Brown on Super Pro Road/Race Muncie Upgraded Ultra Case M22 Rock-Crusher. SALE EXTENDED!!! Michael wilhelm on Auto Gear Upgraded Ultra Case M22Z Rock Crusher 4-speed. Perfect Performance with 2.73 to 3.42 Rear End Gears.
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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 …
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The Muncie M22 is known as the Rock Crusher. See how we improve its strength and versatility by adding a Gear Vendors Overdrive. The Muncie M22 is known as the Rock...
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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 …
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In 1966, this changed to RPO M-20, RPO M-21, RPO M-22, and the customer more or less selected the 4sp option (within limits, for example, you couldn't get the M-21 with a 3.07 rear). The M-22 (HD, Rockcrusher, whatever you choose to call it) WAS NOT available as an option until 1966.
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Jim Mac. 12727 posts · Joined 2004. #5 · Apr 24, 2022. hopefully he meant that a m22/rock crusher was rarer installed in a car. jim. Jim. 70 chevelle, SS clone 454 …
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MUNCIE 4-SPEED MANUAL TRANSMISSION ASSEMBLIES, GEARS & PARTS APPLICATIONS: GENERAL MOTORS 1963-1974 GENERAL MOTORS (HIGH PERFORMANCE) ... L26-s36T: M22 'Rock Crusher' (1971-74) 3978761 WT297-16Z NOTE: these (3) gears used with 26 spline clutch. B2-2 Maindrive Oil Slinger all …
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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 would bolt right in using existing cross member, mounts and drive shaft? ... Muncie M-20 GM 8.5, 3.73 posi. Save Share
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NEW DESIGN MUNCIE M22 ROCK CRUSHER CLOSE RATIO 4 SPEED. THIS IS THE M-22 TRANSMISSION THAT GM COULD NOT BUILD! Newly designed STATE-OF-THE-ART Muncie front case from "Auto Gear". This is by far the "BEST" replacement aluminum case ever built for a Muncie! The front bearing is a "SEALED" bearing, and slightly thicker …
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This 1969 Muncie M-20 4-speed was located and purchased for use in a non-numbers-matching 1969 GTO and was treated to a rebuild kit from Midwest Transmission Supply. ... The disassembly and assembly of the M-20 is similar to that of the M-21 and the M-22 Rock Crusher. The big difference between the M-22 and the other …
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Muncie M-22 or tremec 5 speed. Jump to Latest ... I was planning on getting a muncie rock crusher for my 68 cause ive heard theyre awesome trannies. But lately ive been reading that the tremecs are pretty good. The main thing i like is 5speed, cause i …
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The Muncie 4-speed transmission was used with many different GM models and engine combinations from 1963 through 1974. ... In addition, many GM high-performance engines came with M-22 "Rock-Crusher" in the 1970-73 years, however an early version of the M-22 was available as early as 1965 in Corvettes. Proper identification of the ...
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How to Identify Muncie 4 Speed Transmissions. Identifying Muncie 4 Speeds III by Paul Cangialosi : The most popular question has to be that everyone thinks they have the famous "rockcrusher" M22 4 speed. This …
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