how tell m22 rock crusher transmission

How to Identify a Muncie Four Speed: Build Date Codes ...

Learn how to identify production code numbers, VIN numbers, and more on a Muncie transmission. Get in the right gear with these tips

GM Muncie 4-Speed Decoding : Drivin' It Home

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.

m-22 muncie rock crusher | eBay

64-74 NOS MUNCIE BEARING RETAINER 3915020 M20 M21 M22 Rock Crusher COPO. Brand New. 5.0 out of 5 stars. 1 product rating. - 64-74 NOS MUNCIE BEARING RETAINER 3915020 M20 M21 M22 Rock Crusher COPO. C $120.95. Buy It Now. +C $66.71 shipping. from United States.

Guide to Muncie M20, M21, and M22 Four-Speed Transmissions

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 ...

Muncie 4-Speed: The Complete History - Chevy DIY

M22 RockCrusher . In 1963 the Corvette Grand Sport racing program was instituted. The early Grand Sports used a special heavy-duty version of the M21 close-ratio transmission. These special units evolved into what is called the M22 today.

Muncie Identification | The H.A.M.B.

Feb 21, 2010· 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).

It's Worn • Guide to Muncie M20, M21, and M22 Four-Speed...

Aug 07, 2018· 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 M22 Rock Crusher would come later to accommodate the …

Muncie 4-speed Transmissions | Hemmings

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 M22.

Muncie 4 Speed Transmissions - 5Speeds Transmission Home Page

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? Well it wasn't designed so that you could go drag racing on Saturday night or impress in front of Burger King by doing massive hole shots ...

Muncie 4-Speed Identification Guide - Chevy DIY

The progression of the 10-spline input identification groove system. From left to right, early M20, M21, later M20, and M22. You really cannot get the early M20 and M22 mixed up because the early M20 came with a 7/8-inch countershaft, while the M22 did not. In fact all of the upper-speed gears …

Identify General Motors' Four-Speed Transmissions

Jun 13, 2017· The M20 and M21 used a gearset with a more angled tooth design on each gear (left). 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 …

What is a Muncie M21 worth? – AnswersToAll

Mar 21, 2021· How can you tell if you have a rock crush M22? Look for the "GM" sign imprinted on the transmission box to identify the manufacturer of the transmission. Check whether there are any rings around the shaft splines. An M-22 "Rock Crusher" has no rings, so if you see rings in your transmission, it means it is not an M-22 "Rock Crusher."

how to tell a muncie transmission m22 from m20

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Muncie 4 speed | Hot Rod Forum

Aug 14, 2015· M-37 "Super Muncie" or "rock crusher" Several ratios available, large input shaft (1 1/4, like "Hemi" 4-speed and "big" Top Loader), spur-cut 1st gear (increased load "shock" capability, makes a horrid "whine", thus the nickname) and large output shaft. The only cars I recall them in were the ZL-1s. LOTS sold over the counter for racing in the ...

How to tell a muncie transmission m22 from m20

How to tell a muncie transmission m22 from m20 Several things are needed to identify a Muncie correctly. The first is a main case casting number. Second a count of the input shaft and output shaft splines and if any rings or grooves exist around the input shaft splines. Third are …

The Mighty & Majestic Muncie 4 Speed Transmission - Wilson ...

The M22 is a serious beast when it comes to transmissions. The only negative was the noise that this transmission would produce. When the engine was driving at low revs the transmission would rattle like it had gravel inside and would whine at high rpms. The M22 was eventually dubbed the "Rock Crusher".

How To Identify An M22 Rock Crusher Transmission

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.

LOOK ON SALE Muncie 4 Speed Transmission M20 OR M21 ALL ...

Note: All Muncie 4 Speeds are Built To Order, Call Us With Your Application for Current Build Time and Delivery Date. Muncie 4 Speed M20 or M21. $2899.99 OR WITH Muncie CORE exchange $2499.99. If you have no useable core the price is $2899.99!! Questions on our core exchange policy? CALL 1-877-614-4327 Shipping cost on the new unit is $165.00 or less to anywhere in ...

MUNCIE M22 4 SPEED ROCK CRUSHER TRANSMISSION - $1500 ...

This is a very rare 660 m22 rock crusher muncie, it is a service replacement transmission unstamped, no vin, it will be correct for 68 to 70, all rebuilt and guaranteed, all new straight cut gears, 220 ratio, asking 2475.

Converting to a M22 Rock Crusher | Team Camaro Tech

Jul 15, 2013· I have 67 Camaro with a factory M20 4-speed. The synchronizers are going bad and its time to replace the trans. 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...

muncie rock crusher transmission

Muncie 4-speed Transmission (Group 4.000)

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 …

M22 or M21 what's the diff? | Team Chevelle

Jul 09, 1999· Yes, the M22 is a whiner because of the different angle that the teeth are cut and they are considered stronger. The difference in a M22 is: input shaft, 1st, 2nd, 3rd, cluster and the reverse idler gears. EVERYTHING ELSE is the same and interchangeable. If you had a numbers matching 66 SS with a M20 and wanted a Rockcrusher, just buy these ...

Muncie M22 Rock Crusher 4 speed | Hot Rod Forum

Aug 20, 2003· Can someone tell me how much a muncie m22 rock crusher is worth this transmission was produced buy gm in 1966&1967 Search " " across the entire site Search " …

muncie m22 rockcrusher transmission

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 an original Muncie have been solved by the Super-Case design. The Supercase has extra casting in all …

M22-Wide vs M22 "Rock Crusher" | Team Chevelle

Oct 30, 2008· We are restoring a 72 Chevelle SS and would like to use a Muncie "Rock Crusher". Is there anyone out there that and tell me the difference between a Muncie M22W and a M22 Rock Crusher. I have tired to look online but not finding anything to help. I would appreciate it. Thanks.

Muncie decoding? | NastyZ28.com

Nov 23, 2014· Hey All! Can anyone tell me witch Muncie 4 speed they used in 1973? I recon the M20 0r M21. Am i correct? Since the M22 Rock-crusher normally were for the bigblocks, and no bigblocks were offered in 1973 as we all know (At last not in a Camaro)

how to identify a m22 rock crusher - theselahproject.co.za

How to Identify a M22 Rock Crusher Free Online Repair. Every GM Rock Crusher has a casting number with which you can easily identify a transmission box. Count the input shaft teeth to find out the make of the transmission. Input shafts differ in each GM transmission so you can easily identify an M-22 "Rock Crusher by its input shaft count.

Muncie 4-speed

1971 Chevrolet Corvette C3 Production Statistics, Facts ...

This was the last year for the M22 "Rock Crusher" heavy duty transmission. It was named the "Rock Crusher" because of the sounds it made when shifting. Still no black Vettes' this year on the standard order sheet. Production Options and Build Statistics. Total 1971 Corvettes Built - 21,801. Total 1971 Convertibles - 7,121.