The Chevelle 300, 300 Deluxe, and Malibu came standard with a 3-speed manual column shift transmission. ... thus the nickname "Rock Crusher" was born. Another misconception is if you have a drain plug you have a M22. ... An example would be the date code P8T13, meaning 1968 (8), December (T), 13th. The transmission was assembled December 13 ...
Corvette Graveyard. C3 General - M22 Rock Crusher - Just bought a 1968 (originally was 427/435..currently has a CE replacement block from 69)) and I believe it has a M22 vice M21. Intent at some point in the near future is to crawl under and check numbers/code. I know it has the factory 411 rear end (Code FB) so that is the first reason...
Muncie 4-speeds were produced in two different ratios wide ratio (M-20) and close-ratio (M-21). An extra heavy duty close-ratio version (M-22) was also offered on many of the big-block high-performance models.The choice of transmission was dictated by the engine size and rear-axle ratio. Axle ratios of 3.73 and lower (numerically higher) came ...
Professionally Built Muncie M22 Rock Crusher 4 Speed Close Ratio 2.20 New Gears (Fits: 1968 Chevrolet Chevelle) Remanufactured: Muncie ... New Listing 1968-72 Chevrolet Chevelle Transmission Trans Modulator Line Tube T400 Oe Steel. Brand New: Inline Tube (6) 6 product ratings ...
Information and parts are provide for the following Transmission: Muncie M21 / M22 4 Speed (RWD), an illustrated parts drawing for the M21 is provided. IDENTIFICATION - Aluminum case, extension housing and side cover. The side cover has 7 bolts and 2 shifter cams. The synchro rings have 36 teeth and the unit has a 4-step cluster gear.
Story By. Benjamin Hunting. The Muncie 4-speed transmission is a legend among fans of GM muscle cars. For a 10 year period starting in the golden age of 1960s performance, General Motors' …
Muncie transmission rebuilt and guaranteed for 1 year. Correct fit 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 …
I'd also suggest avoiding synthetics and stick with a quality 75w-90 (or 80w-90) dino gear lube. Make sure it is GL-4 not GL-5. I'm not even sure an 85w-140 oil is even available in GL-4. Team Chevelle #998. 1965 Malibu SS L79.
DUTCH MAX HEADWORK. 7034 posts · Joined 2011. #2 · Oct 9, 2021 (Edited) That white switch on the pedal is the stock Clutch safety switch. It ties into the purple starter wiring and will only allow current flow with the clutch pedal pushed in. AL. LeoP, NickeyChevelle and 72soft-top. I. Iggycat2014 Discussion starter.
Put the transmission in 2nd gear and remove the side cover to view the helix angle of the gears and the condition of the synchro engagement teeth. Fair market value could be as much as $1500-1600 …
4-SPEED MANUAL TRANSMISSION ASSEMBLIES, GEARS & PARTS APPLICATIONS: GENERAL MOTORS ... M22 'Rock Crusher' (1964-74) 3924796 WT297-12B NOTE: these TWO (2) gears w/o snapring counterbore on cone end: used w/o thrust washer. ... #3915020: for 307 bearing (1968-74) 3915020 3915020 B6 Maindrive Retainer Gasket …
This 1968 Chevrolet Chevelle Convertible is the epitome of classic American muscle, boasting a powerful stroked 454 engine and brand new M22 Rock Crusher transmission. The Grotto Blue exterior pairs perfectly with the matching blue interior, creating a timeless aesthetic that's sure to impress. With its perfect chrome, near-perfect brightwork ...
Check These Out. Complete original GM Muncie transmission rebuilt and guaranteed for 1 year. Correct fit for all 1969 - 1973 model Chevelles and Novas. This one will have the holes on the side where a bolt will secure your shifter linkage levers. This is the Muncie M-22 Rockcrusher four speed.
The Rock Crusher transmission was legendary in the Chevelle, but there were a few more tricks in this glorious muscle car. This Chevelle featured a Holley carburetor and an aluminum low-rise ...
The M-22 gear teeth are cut at a noticeably lower angle (not quite at a straight angle as some people say). This lower angle of the teeth imparts greater strength to the gears, but it also increases the noise caused by the meshing of the gears. This higher level of noise is where the nickname "Rock crusher" originated.
Sitting underneath the hood is a behemoth 396 C.I. big-block V8 breathing fire through a 4-barrel carburetor, this '69 Chevelle is a monster on the street. Torque is stomped into the pavement through a correct Muncie M22 "Rock Crusher" 4-speed manual transmission, which allows for both quick shifting and plenty of smiles behind the wheel.
Muncie M22 4 Speed Transmission Rock Crusher Close Ratio 2.20 FULLY RESTORED #1. Opens in a new window or tab. ... New Listing 1968 Muncie M22 4 Speed Transmission Rock Crusher NICE! Opens in a new window or tab. ... 11 product ratings - REBUILT 1968 MUNCIE M20 4 SPEED TRANSMISSION GTO 442 CAMARO …
1969 Camaro RS ZL1 427 M-22 Rock Crusher 4.10 Extremely High Quality Correct Restoration Replica of 1969 Camaro ZL1 car #68 I have personally owned a few of the 1969 ZL-1 Camaros out there. 5 different ZL-1's to be honest.
The body was rust-free. Originally built in Van Nuys, CA, and sold new in La Puente, CA. All date-code-correct parts were used. Some parts used on the build are original LS6 parts. 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.
Preview: This 1968 Chevrolet Chevelle convertible boasts a stroked 489ci V8 engine rated at 600 horsepower and a brand new M22 Rock Crusher 4-speed manual transmission. The car retains its original color Grotto Blue and blue interior, with additional details including staggered wheels, four T3 headlights, and described-as-"perfect" chrome accents.
1. The main case date code is usually found on the passenger side of the case just below the casting number. 2. The extension housing date code can usually be found on the …
This is for a 1968 production car. The "T" stands for December and 13 is the day. To confirm this simply look at the VIN. It usually begins with 18S101350 or 28N12950. This means the Muncie was assembled December 13, …
1968, 1969 and 1970 . The 1968 model was identical to the 1967 model except for a main case casting alloy change. The most common main case casting used during this period was 3925660. The front bearing retainer was also changed to a thicker casting. The height of the casting changed from roughly .325 inch to .450 inch.
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. This is the Muncie M-22 …
This is a BEEFY version of the original Rock Crusher transmission. ... 1968 - 1972 Nova Clutch Linkage Install Kit, Small Block ... Add : Price: $369.95 . Add : Price: $32.95 . Add : Price: $209.95 . Add : 1970 - 1972 Chevelle or Nova Manual Transmission TCS Switch, Spade Style 1967 - 1981 Camaro Manual Transmission Flywheel, for 11" Clutch
"Where Our Customers Send Their Friends" 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.
One reason the Chevelle is so popular is because the entire family of Chevrolet engines can be easily swapped in with room for exhaust and transmission options. The first-generation cars do have a somewhat narrow and shallow transmission tunnel compared with the second-generation models. 1964: Base 283ci, 195 HP.
1964 to 1968 Muncie 4-speed transmissions can be identified from later models by the way the transmission arms attach. ... thus the nickname "Rock Crusher" was born. ... meaning 1968 (8), December (T), 13th. The transmission was assembled December 13, 1967 for the 1968 model year. The 1969 to 1974 Muncie got a ratio designating letter at the ...
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 heavy twist of Chevrolet's big-blocks in the mid-1960s.
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. It is the heavy-duty version of …
Four speeds were available in GTO's, notably the Muncie M20 wide ratio, M21 close ratio and M22 rock crusher, and automatic fans had either a two-speed …
This Heavy Duty 3-speed, depending on year, is called either a Dearborn (1965-1969) or a Muncie (1970-1973) M13 unit, and utilizes the code M13 on the sheets. Surprisingly, a 3-speed transmission was the standard transmission for all GTO's from 1964 through 1972, although in its initial year of 1964, the 3-speed was an M12 unit made …
Based on these 2 factors, the FACTORY installed either a wide or close ratio 4sp (BOTH were M20) to be more compatible with the engine/rear ratio combination. Beginning with the 1966 model, there …
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.
Identifying Muncie 4- Speeds. 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 date codes and VIN numbers that help confirm that the above case and gears belong together.
If you've ever driven a classic muscle car equipped with a four-speed manual transmission, you probably experienced the joys of commanding a Muncie Rock Crusher. Some classic 1960s General Motors ...