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Brand New SUPERCASE M22 4-Speed Muncie Rockcrusher Style 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 the known weak areas. The mid plate is aircraft grade aluminum.

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NEW Muncie M22 SUPER ROCK CRUSHER 4 speed $2899.00

Muncie Parts > NEW Muncie M22 SUPER ROCK CRUSHER 4 speed $2899.00. NEW Muncie M22 SUPER ROCK CRUSHER 4 speed $2899.00. View Images. Price: No Price: Sale Price: No Price: Availability: in stock Prod. Code: AGM22: CURRENTLY UNAVAILABLE UNTIL SPRING-TAKING ORDERS. $2899.00 PLUS S/H + ASSEMBLY …

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How to Identify a M22 Rock Crusher | It Still Runs

Step 2. 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. Each transmission has …

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How to Identify a Muncie Four Speed: Build Date Codes

1963-1966 production codes will start with the letter P and have four numbers, for example: P0421. 1. P represents the manufacturing plant, Muncie. 2. 04 represents the month code when the unit ...

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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.

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M22-Wide vs M22 "Rock Crusher"

DZAUTO · #3 · Oct 28, 2008. In the beginning, the M-22 was the Heavy Duty Muncie, and it was available ONLY in the close ratio version (2.20:1 first gear ratio). The primary difference between the regular close ratio Muncie (M-21) and the HD Muncie was the angle at which the gear teeth were cut. The M-22 gear teeth are cut at a noticeably ...

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Muncie 4 speed | Hot Rod Forum

How much HP will a Muncie 4 speed hold. How do you distinguish between an M21 and an M22. ... 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 …

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Complete Guide to Muncie Transmissions

8. The M22 Rock Crusher 26-spline input shaft sports a wider gear for greater torque capacity. Just because you've found a 26-spline input shaft does not mean you've found an M22 input shaft, which is made of a stronger alloy. The standard 10-spline input shaft found its way into new Muncie M20 and M21 transmissions from 1971-'74.

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Magical Muncie Four-Speed | Hotrod Hotline

One of the most common swaps involves a Muncie 4-speed. These are easy to adapt to a wide range of hot rods. There are three basic types of Muncies: M20, M21 and M22. A Muncie differs from a Saginaw transmission in that its reverse lever is in the tail housing, not the side cover. The difference between a Muncie and a Borg-Warner is the Muncie ...

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New Auto Gear Upgraded Ultra Case Muncie HD M22 …

STRONGEST Direct Replacement M22 With NEW Muncie AUTO GEAR Upgraded Ultra CASE With The Strongest M22w WIDE RATIO or Close …

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

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When was the M22 first called "rock crusher"?

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. True enough the M22 did trickle out the door in 1965-67 and was buried in the option lists.

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Muncie M22 "Rock Crusher" 4-speed | Hernan …

Muncie M22 "Rock Crusher" 4-speed Posted on January 31, 2023 by hvivani A photo from when the last Muncie M22 "Rock Crusher" 4-speed came off the assembly line. A legend for toughness …

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What Is A M22 Rock Crusher?

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. There are 7 different input shaft possibilities on a Muncie.

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The 1965 Chevrolet M22 Rockcrusher Transmission: The Mystical Transmission

The 1965 M22 maintained the 10-spline input and 27-spline output as all other Muncie transmissions from that model year.The 1965 M22 also had the drain plug boss drilled and tapped for a magnetic drain plug. This was not done on the M20 or M21 transmissions. Driver's side of restored 1965 M22 transmission.

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Muncie 4-speed Transmissions | Hemmings

The 2.20:1 ratio first gear is usually referred to as the Muncie M21 transmission; based on GM's production codes. The 2.56:1 ratio is referred to as the M20. 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. …

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M-22 "rock crusher"

Yes, the casting numbers are the same, but '69 and later Muncie 4 speeds had a suffix letter on the passenger side case ID stamping; A for M20, B for M21 and C for M22. M22 also had a drain …

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1967

NEW, Complete 67 - 68 Camaro Muncie 4 Speed Conversion Kit now available! This kit will get you basically everything needed to convert a automatic 1967 - 1968 Camaro into a four speed machine! You have a choice of a original completely rebuilt GM Muncie M20, M21 or M22 Rock Crusher transmission. With this new kit you also get all the hardware ...

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Converting to a M22 Rock Crusher | Team Camaro Tech

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 …

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M20-M21-or M22 | Chevy Tri Five Forum

The M20 was the wide ratio (2.56 1st gear in 63-65) (2.52 in 66-74). The M21 was the close ratio for ALLLLLLLLLLL years, 2.20 1st gear. The M22 was the Heavy Duty close ratio for 66-74---------- A VERY SMALL HANDFUL OF M22s WERE MADE IN 65, AND IT IS BELIEVED THEY WERE ALL INSTALLED BEHIND 425hp 396 ENGINES.

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How To Identify Chevy Four-Speed Transmissions

The Muncie four-speed was produced in two ratios: the wide ratio (M20) and the close-ratio (M21). That being said, there was a second, close-ratio version (M22) that was developed to survive duty behind engines with a higher torque output, and was known as the "Rock Crusher."

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

M22 transmissions can only be identified removing the selector cover(side cover) and visually identifying the straight cut gears-all other muncie transmissions had conical cut(angle) gears. The most well …

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Stock Muncie torque/hp rating? | Team Camaro Tech

The M22 were also stronger, IMHO, due to a larger 1st gear tooth cross-section area and the 9310 gear material vs. the 8620 material that the M20/M21 gears were made from. 9310 material strengths: normalized => sy=82 kpsi ; su=132kpsi Q&T => sy=130kpsi ; su=155kpsi 8620 material strengths: normalized => sy=52kpsi ; su=92kpsi …

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M22 4 speed rock crusher | Team Chevelle

I have a 1970 m22 close ratio 4 speed from a 1970 ls6 I owned back I the 80s. ... Well I have never bought one but they seem to bring significantly more money than an M20 or M21. ... grin inducing almighty and mythical transmission that is the great Muncie M22 Rock Crusher makes more sense for many compared to buying a retrofit kitted …

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Gear ratio difference between M20, M21, M22

IMHO save the close ratio gearsets of the M22 for use ahead of 3.73:1 and larger ratio rear ends, and FWIW I wouldn't go smaller than a 3.36:1 rear gear even with a wide ratio Muncie box. Forget the Muncie OD, unless it's going in your pickup truck. BTW, you can now buy high-quality M22 "rock crusher" style wide ratio gearsets!

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To Muncie, or not to Muncie? That is the question.

There are "Italian" gear sets out there, if you can find them. They are about $800. There are Autogear replacement (supercase) transmissions out there - about $2200. I expect the engine I'm building will make 550HP/550TQ. I really wanted to keep the 4-speed. It's the original transmission which doesn't matter much to me.

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Muncie 4 Speed Transmissions

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. ... Top countergear is an M22. Lower gear is an M20. Notice the ...

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How to Identify a Muncie Four Speed

There also was a second, heavy-duty close-ratio version: the "Rock Crusher" (M22) that was offered on some of the high-performance big-block models, starting with the 1965 Corvette.

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How to Rebuild a Muncie Four-Speed Transmission

It was time to give the Muncie four-speed a rebuild. 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 ...

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NEW Auto Gear Upgraded Ultra Case Muncie HD M22 4-Speed Rock-Crusher

John DiLauro on Auto Gear Upgraded Ultra Case M22Z Rock Crusher 4-speed. Perfect Performance with 2.73 to 3.42 Rear End Gears. SUMMER SALE!!! Garry Brown on Super Pro Road/Drag Race Muncie Upgraded Ultra Case M22 Rock-Crusher. SUMMER SALE!!! Michael wilhelm on Auto Gear Upgraded Ultra Case M22Z Rock Crusher 4-speed. …

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