The synchro rings have 36 teeth and the unit has a 4-step cluster gear. Reverse gears are helical cut and are located on the extension housing. M-21 close ratio, and the extra heavy duty close ratio" M-22, also known as the "Rock Crusher". The M-22 was generally installed behind severely powerful (high torque) big-block engines.

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 Gear Box is the source for Muncie Parts like the new assembled M22 SUPER ROCK CRUSHER 4 speed kit with micro super finish or downshift case support.

's parts help to keep your crusher working at its optimal level. They are engineered to fit and function like only the original parts can – without compromising performance, …

Available for both horizontal shaft impact (HSI) crushers and vertical shaft impact (VSI) crushers, 's comprehensive wear and spare parts offering contains standard …

STRONGEST Direct Replacement M22 With NEW Muncie AUTO GEAR ULTRA CASE With The Strongest M22z ULTRAWIDE RATIO 4 SPEED TRANSMISSION. A GREAT HEAVY DUTY ROCKCRUSHER FOR YOUR CAMARO, NOVA, CHEVELLE, CORVETTE, GTO,442. THE MAIN CASE IS THE STRONGEST MADE with fill and drain plugs. C355 …

If you've been crushing rock long enough, you already know the benefits of investing in OEM parts versus selecting something from an aftermarket vendor. ... Our replacement crusher parts are taken from the same warehouse used for our manufacturing operations. That means you get an equal part, with equal quality, that's designed exactly for ...

Muncie M-22 Rock Crusher Four Speed Transmission - RARE Drivers Side Speedo (#113821119555) See all feedback. Product ratings and reviews. Learn more. Write a review. 4.8. ... I'm worried about the internal parts of the transmission I bought because the outside is not done to the condition that was stated it would be in. Not …

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.

T&B and 5speeds.com offers the M-22 Rock Crusher Supercase. T&B offers a complete Muncie 4-speed and it features the new Masiero Ital­ian gearsets, Muncie Supercase, super tailhousing, iron midplate, and roller bearing sidecover. Medatronics Cor­poration at 5speeds.com offers M-22 complete transmission with the fin­est …

1967 - 1968 Firebird Muncie Four Speed Transmission, M-22 Rockcrusher Complete original GM Muncie transmission rebuilt and guaranteed for 1 year. Works great for all 1967 - 1968 model Firebirds. This one will have the studs coming out from the side where your shifter linkage mounts. This is the Muncie M-22 Rockcrusher four speed.

People think all Muncie four-speeds are Rock Crushers, but they're not. Nowadays there are custom gear ratios and set ups, including M21 wide-ratio and M22 wide-ratio units. You can pretty much get what you want. Beefed up boxes for hot rods and Resto-Mods are popular, too. " When rebuilding a Muncie four-speed you can take a '65 case and ...

The correct crusher parts can be challenging to find. When production matters, count on Quarry Parts for the precise crusher wear parts you need, when you need them most! ... Ask Kemper about our ROCK and STOCK program. Give us a bulk order and we'll stock the parts and ship them to you when you need them! Call a Kemper Parts Associate today …

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. ... Count the number of splines in the transmission. M-22 "Rock Crushers" made between 1967 and 1970 have 10 splines; transmissions made between 1969 and 1974 have 26 ...

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 …

John DiLauro on Auto Gear Upgraded Ultra Case M22Z Rock Crusher 4-speed. Perfect Performance with 2.73 to 3.42 Rear End Gears. SALE EXTENDED!!! 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. …

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 …

Muncie M22 "Rock Crusher 4 SPEEDS FROM 1965 TO 1974: This page is devoted to OEM Complete units; New aftermarket units and OEM parts and NOS parts. ... Countershaft; Small Parts Kit with Assorted Snap Rings, Thrust Washers, Needle Bearings and Taper Pin; Retainer Locking Straps, Oil Slinger and Input Cage and 17 needles. We …

The Muncie transmission and the T10 are visibly very similar, but it's the differences that would make GM's newcomer an enduring force for muscle fans. Once again Fodrea was involved, and a key aspect of the Muncie redesign involved strengthening the basic design of the T10 so that it could handle more torque without sacing the ability …

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 ...

GM Muncie transmission rebuilt and guaranteed for 1 year. Correct fit for all 1967 - 1968 model Chevelles and Novas. This one will have the studs coming out from the side where your shifter linkage mounts. This is the Muncie M-22 Rockcrusher four speed. Designed for the highest performance models.

It is from a Saginaw 3-speed, casting number 591620. It can be used as an adapter-bearing retainer. It was an old trick to enable small-retainer transmissions to correctly pilot to large retainer-bore bellhousings. If you attach a small-retainer transmission to a large-bore bellhousing the transmission is not piloted correctly.

4-SPEED MANUAL TRANSMISSION ASSEMBLIES, GEARS & PARTS APPLICATIONS: GENERAL MOTORS 1963-1974 GENERAL MOTORS (HIGH PERFORMANCE) AUTO GEAR EQUIPMENT ... L36-s36T: M22 'Rock Crusher' (1964-74) 3924796 WT297-12B NOTE: these TWO (2) gears w/o snapring counterbore on cone end: used w/o thrust …

The Gear Box is the source for Muncie Parts like the new assembled M22 SUPER ROCK CRUSHER 4 speed kit with micro super finish or downshift case support. ... Transmission Yokes: M5R1 / M5R2: Clutch Packs: GEARBOX TEE SHIRT: Miscellaneous: Discontinued, Used, Sale. 1st gear: Shipping: Contacts: Instructional Videos: MT82: Muncie Parts > …

It was much easier to stockpile Muncie spare parts and cores in the 1970s than it is today. Reliable sources to validate information regarding serial and casting numbers will get scarcer as time passes. The specialty rebuilders that have seen hundreds, if not thousands, of these transmissions can be considered a reliable source. These guys […]

That's where the 'whine' come's from with those transmission's.. Also, there's companies out there that are making new gear set's for Muncie's as well..not just stock replacement stuff either. 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 …

Home of the world's best 4 speed muncie transmissions and parts. We also offer muncie rebuild kits, racing parts and m22 rock crusher transmissions.

Giving a worn-out Muncie four-speed transmission a quick rebuild with parts from Summit Racing. ... We've seen Rock Crushers for sale at swap meets for up to $2,000. Fortunately, they are ...

We have a large inventory of rebuilt M21 & M22 Manual Transmissions plus transmission parts. Our factory rebuilt re-manufactured transmissions are dyno tested before leaving the factory, ensuring the highest quality, We offer a no hassle 12 month warranty, performance guaranteed. ... Rebuilt Transmission M22 1966-1974 …

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 …