In 1964 and 1965, Muncies in some of the full-size Chevrolet Impalas and Pontiac Catalinas were equipped with longer mainshafts and extension housings to keep driveshafts shorter and reduce harmonic vibration. M22 RockCrusher . In 1963 the Corvette Grand Sport …

The 2.20:1 ratio is commonly designated as the Muncie M21 transmission. The 2.56:1 ratio is commonly referred to as the M20. Muncie also had a second close-ratio transmission designated M22 and often referred to as the "rock-crusher," which was used behind the highest-performance engines and in Corvettes, the M22 is a highly sought-after performance transmission.

The M22 was eventually dubbed the "Rock Crusher". It is a common misconception that all Muncie transmissions are "Rock Crushers", but it is only the M22 that deserves that name. The M20 and M21 were both release in 1963, but it wasn't until 1965 that the M22 hit the market. The M22 was created for the Corvette Grand Sport racing program.

Performance Built Muncie M22 Rock Crusher 4 Speed Transmission. This unit has been rebuilt at our state of the art facility. We have carefully engineered a process that allows us to bring you a product we can stand behind. This is a direct replacement for the following Chevrolet,Oldsmobile, Buick, and Pontiac vehicles. Compatible Vehicles.

The M22 'Rock Crusher' featured a one-inch countershaft pin bore and shot-peened gears with aggressive helix angles that reduced heat and stress but also increased noise, leading to the nickname as the transmissions rattled their way down the road.

This is a Very Rare and Completely and Freshly Rebuilt M-22 Transmission with REAL GM Rock Crusher Gears for 1970 1971 and 1972 GM Vehicles including, Chevy, Corvette, Camaro, Chevelle and other GM vehicles of that vintage These first came out in the 1970 Chevelle with the fine spline input and they were then released in the 1971 and 1972 Corvettes and other GM Cars.

Muncie 4 speed lube. I have read several posts on various sites that talked about what lube to use in a Muncie 4 speed. Most say use GL4 80/90 wt. They say never use synthetic or GL5. The guy that rebuilt told me to use synthetic Mobil 1. (local transmission shop that does only manual transmissions and gear boxes.

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 nickname "Rock Crusher" was born.

Chevy Transmissions: Muncie M22 "Rock Crusher 4 Speeds were made From 1965 TO 1974: The most popular transmission of it's time for high performance cars built for Chevrolet and all performance oriented G.M cars. They have the same gear ratios as the legendary M21 but with a heavy duty gearset.

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.

David on Auto Gear Super Case Muncie M22 4-Speed Rock-Crusher, Camaro 4-speed 10/27 or 26/27spl. FALL SALE ON NOW!!! Michael Welage on Auto Gear Super Case Muncie M22 4-Speed Rock-Crusher, Camaro 4-speed 10/27 or 26/27spl. FALL SALE ON NOW!!! Shawn Riley on Muncie Super Duty M23 Super Case 4-speed Road or Drag Racing Rock-Crusher. FALL …

M22 had straighter cut gears. Sounds kind of like a gear drive timing set. Unmistakable sound. I don't know how many people I've had tell me "Oh ya this thing has a Rock Crusher (colloquial term for M22) in it. I've only heard the sound of the real deal once.

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. The Gear Box Transmissions Muncie-Tremec-Saginaw-TKO-Top Loader-Richmond

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.

A Chevrolet Engineering Change Recommendation #68715 was issued on December 19, 1964, that proposed the changes required to change …

The M22 Rock Crusher used a gearset that features less of an angled-tooth gearing (right). Images courtesy chevelles.com. The gear ratio of the Chevy four-speed transmission placed in any car was usually determined by the engine size and rearend axle ratio. If a car came with an axle ratio of 3.73 (or numerically higher), it usually came with a ...

The new generation Muncie M22 with all the bells and whistles would probably work pretty good with a clutch that slipped a little. 2002 Jerry Bickle Cavalier, 446" Small Block, Brodix Canted Valve, lenco 5 speed, 7.54 @ 180. mph,1.06 60', 2235 lbs for 2014.

The term "rock crusher" refers to the noise made by the meshing of the stronger helical gears in the M22. Later model 1971-'74 Muncies are also popular with racers, because these transmissions used a 32-spline output that is stronger than the early 27-spline, and the newer units seem to perform better in high-rpm and high-horsepower applications.

Correct 1970 4-bolt 454/450hp block, M22 4-speed Rock Crusher Muncie transmission and original LS6 CRW 410 12-bolt posi-traction rear end. It also has a 6,500 rpm redline tachometer, bucket seats, console, ZL2 cowl-induction hood and original 14" SS Rally wheels with wide-oval tires. Feel free to contact me via text or phone (330-329-3633) if ...

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...

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.

This is the highest horsepower Z28 GM/Chevrolet ever produced in the 1960's and 70's. This was also the highest horsepower 2nd Gen Camaro Z28 with special... CTB SUFFIX 360HP LT1 Z28, M22 ROCK CRUSHER, 4.10 12BOLT - cars &...

Muncies with 26-spline inputs and 32-spline output shafts came as M20, M21, and M22 transmissions. Before 1969, only M22 transmissions had drain plugs. From 1969 to 1974 all-ratio Muncies came with drain plugs. Muncie countergears had the same number of teeth on first-, second-, and third-speed sections.

Muncie M22 Rockcrusher, Borg Warner Super T10 or Turbo 400 Discussion in ' Transmission & Driveline Topics ' started by Spencer77, Aug 22, 2012 . Page 1 of 2 1 2 Next >

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.

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 ...

Chevrolet Muncie Transmission Parts - M20, M21, & M22. ... The M22 "Rock Crusher" followed four years later. It uses stronger components to handle big-block power. The original M20 was only offered for one year. It has the GM casting number "3831704" on the case. In 1964, the aluminum front bearing retainer was replaced with a cast-iron ...

Find many great new & used options and get the best deals for Chevy GM Muncie M22 Rock Crusher Wide Ratio 4 Speed Transmission 26 Spline at the best online prices at eBay! Free shipping for many products!

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.

Hey guys this is a burnout right after we put in a 4.11 rear end in it, it is a 454 big block car and is all recorded with a GoPro.

M22 is a close ratio as the M21 . M22 were good for road racing back in the day, good strength and has that air plane wine but you do not have to pay a premium price for an M22 . You can buy M22 internals and retrofit a M20/M21 case. If you want a stronger transmission, there are Super T10 and some aftermarket transmissions that are even stronger.

Serial numbers for Muncie 4 speeds always begin with the letter "P". P stands for Muncie Plant. Not for passenger car as some self proclaimed specialists may think. The letter M was used to ID the Muncie plant for the Muncie 3 speed, so P was the next logical letter. The letter O would add confusion since it resembles zero.