Here are some key factors to help you distinguish between these two popular transmission types: 1. Transmission Designations M20: This is often recognized as the …
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Below we provide a M21 & M22 parts illustration to assist you with the correct identification of the parts you need. Select the parts you require from the following list and give us a call. ... Rebuilt Transmission M22 1966-1974 Rock Crusher MTGM038. Rebuilt Overhaul Bearing Kits M21 & M22 Transmission. Kits w/OE Style Bearings.
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Do you know how to tell the difference between a Saginaw, a T10, and a Muncie four-speed? The easiest way is by knowing the construction of each unit, and the differences are obvious. If the case and side cover are made of …
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For example, due to interchangeability, a 1969 Pontiac could have a trans case and gears from a Buick and a rear housing (extension) from an Oldsmobile. ... 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.
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At this point in time, the trans may or may not be what the numbers rings on the input would suggest it is . For example the Muncie m-20 in my car is parts of,at least, 5 different transmissions . The way most were beat on in the muscle cars and cars since, there's very little chance that you have a .
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If not, it may be on the top very near where the trans mounts to the bell housing. Of course you'll have to remove the tranny to see it. PS - Sleepy-69... My numbers matching M21 does have a drain plug. It's a very late 69 (11A) and has a 1970 model trans in it which apparently all received drain plugs. ----- John - 69 Z/28 69 Z11
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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 …
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Sadie Schreiner, a trans-identifying male runner who recently complained about not being able to get Division I athletic scholarships in women's track and field, is now bragging about beating runners even though Schreiner had a broken shoe.
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Mucncie 4 Speed Identification Page ... 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. ... a 1969 Pontiac could have a trans case and gears from a Buick and a rear housing (extension) from an Oldsmobile. ...
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Hot Products Used for identify rock crusher four speed trans mtw milling machine vsi crusher hpc cone crusher vibrating screen lm vertical mill belt conveyor. Popular materials processing machines iron ore beneficiation plant ...
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The first time I heard the term "rock crusher" was in reference to the transmission in the 1967 L88 Corvette. Due to the low gear angle there is a fair amount of gear noise, really like a medium / heavy duty truck transmission.
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Re: How to Identify a Muncie 4 speed 12-24-02 03:14 AM - Post# 146391 In response to 57Townsman210 There is a very complete web page about identifying the various Muncies at Click the link for Muncie 4 speeds and you'll find everything you ever wanted to know. They also sell good rebuild kits and each kit is specialized for the …
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ORIGINALLY, in the beginning of the Muncie evolution, there was the M20(wide ratio) and the M21(close ratio). A VERY, VERY, VERY few Heavy Duty, close ratio Muncies were specially built for severe duty service (such as for the 425hp/396 Corvettes) in 1965. THEY WERE NOT CALLED M22 IN 65-----they were simply a Heavy Duty close ratio Muncie..
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The following charts can help with GM transmission identification for automatics and manuals. 1-844-78-Catalog. SHOP BY VEHICLE. Free Catalogs. 1967-02 Camaro; 1962-79 Nova; 1958-96 Impala ... This 1974 Trans Am was spec'd with the potent 455ci Super Duty V8 backed by a TH400 automatic transmission. ... Muncie M22 "Rock Crusher" - Strengthened ...
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C1 & C2 Corvettes - M-22 vs. BW ST-10 - How does the Muncie M-22 rock-crusher trans compare to the Borg Warner Super T-10 Power Brute transmission (the ones with a nodular iron case and high nickel gears that were offered as over the counter replacements in the 70's and 80's?? Strength, durability, ease of...
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Several things are needed to identify a Muncie four-speed transmission correctly. One of the best ways to identify a Muncie is the casting numbers on the external components of the transmission ...
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Transmission Identification. 1964 to 1968 Muncie 4-speed transmissions can be identified from later models by the way the transmission arms attach. Early Muncie side covers had a stud and the shift arm attached with a nut on the stud while the 1969 and later model side covers had a hole and the shift arms attached with a bolt.
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In the block labeled Trans on my original buildsheet the letters WD are present. This is the same tag that would have been attached to the 1972 wide-ratio Muncie.
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Identifying codes. 1963 -66 codes follow a 5 digit format starting with a P followed by the month and day the transmission was stamped. For example P0421 reads: Muncie four speed aluminum for passenger car April 21st. 1967 -74 Production codes will start with a P followed by a number for the year, a letter for the month, and two numbers for the ...
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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 had the same gear ratios as the M21 but with a heavy duty gearset.
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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 car may not function properly.
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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 ...
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Learn how to identify production code numbers, VIN numbers, and more on a Muncie transmission. Get in the right gear with these tips. ... also known as the "Rock Crusher." ...
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Help Identify Muncie M20, M21 or M22 ... Try to get the number on the top center section of the trans. Are the shift plates held on by a nut, or a bolt? Does it have a drain plug (2 plugs..one kind of in the middle of the main case, and one near the bottom.) Do the RPMs drop way off from 3rd to 4th gear? Dennis 1929 Model A Coupe
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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 …
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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 had the same gear ratios as the M21 but with a heavy duty gearset. The reason you may ask?
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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 ...
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GTO 3-Speed Transmission, 1972 GTO, Heavy Duty 3-speed transmission, Dearborn, Muncie, M13, M12, Muncie M20, M22 rock crusher, Auto Round-Up MagazineA: L.C., thanks for the nice words. The transmission listed on the build sheet you sent me is indeed the Heavy Duty 3-speed transmission I spoke of in the a recent Auto Roundup/Car Collector …
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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 and look at the angle of the gears. M-20, m-21 will have 45 …
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Crusher Trans Identifying Dolphin Coast Conservancy. How to Identify a M22 Rock Crusher Cars DIY & HowTo Blog 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 ...
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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. ... like "P0139A" The last letter ID's the trans A M20 B M21 C M22. If you have two M22s, you should buy a lottery ticket . earl schieb, Jun 26, ... Go to it and click on "identification" and that ...
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If you're lucky enough to find one of these attached to your Muncie 4-speed it indicates the GM part number of the transmission assembly aiding you further in identifying the transmission.
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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 ...
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