Information and parts are provide for the following Transmission: Muncie M21 / M22 4 Speed (RWD), an illustrated parts drawing for the M21 is provided. ... M21 close ratio, and the extra heavy duty close ratio" M22, also known as the "Rock Crusher".
Returns must be shipped back prepaid and require preapproval with our "Return Material Authorization" Number written on the outside of the package. 1972 Chevy Corvette Camaro Chevelle M22 M22 Muncie Close Ratio Rock Crusher 4 Speed Transmission Chevrolet C3 P2C15C Firebird Pontiac Condition: Used, Condition: Item #12063 Muncie build date 03/15 ...
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. You can identify several unique signs that .
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. 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. 0;
Muncie 4Speed: The Complete History. To understand the evolution of the Muncie 4speed you have to look at a series of engineering platforms that led to the final design of this transmission. The Muncie design has roots going back to 1935. I took the time to research the patent number that is cast into most Muncie main cases.
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". It is a common misconception that all Muncie transmissions are "Rock Crushers", but it is only the M22 that deserves that name.
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 ...
Shawn Riley on Muncie Super Duty M23 Super Case 4speed Road or Drag Racing RockCrusher. JANUARY SALE! Michael OBrien on NEW Auto Gear Super Case Muncie M22 4Speed RockCrusher 26/32spl Street/Strip. JANUARY SALE! Michael OBrien on Auto Gear Super Case Muncie M22 4Speed RockCrusher, Camaro 4speed 10/26 or 26/27spl. JANUARY SALE!
(The M does not stand for "Muncie.") Typically, when you ordered a GM car you had standard options and accessories installed. "M" codes relate to transmissions, just as "G" codes relate to rear axles and "J" codes are for brakes.
The Muncie 4speed transmission was used from on several different GM vehicles and engine types. The Muncie was typically used in performance engines. Changing the oil on these transmissions can be tricky, as the oilfill port is on the side of the transmission. You will most likely need a hose to fill ...
Feb 21, 2010· The most well known Muncie transmissions are the M20(wide ratio), M21(close ratio), and the M22(rock crusher). Although not mentioned much, there was also an M23 transmission that was used, beginning in 1970. The M23 is recognized by a 26spline(fine) input shaft and a large output shaft that requires a T400 driveshaft yoke.
Jul 14, 2018· For sale is a Factory Replica of the Close Ratio Muncie Rock Crusher Four Speed Transmission typically used in High Performance 1965 to 1974 Corvette`s, Camaros, Chevelles, Nova`s, El Camino`s, Impala`s, Oldsmobiles and Pontiacs.. Also included are Hand Fitted Synchronizer Sliders and Hubs. The hand fitted sliders/hubs improves up and down shifting quality through all RPM ranges.
So you''ve decided to slam four with a GM Muncie Transmission. ... Among "oldtimers", the Muncie transmission commands a certain degree of respect. Sure, you could get a manual in tons of cars from GM during the 60''s and 70''s, ... It''s nickname is the "rock crusher" due to the noise generated by the gearset. The gear ratios are the ...
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. ... It was primarily designed as a road race transmission. The ...
Having issues diagnosing problems with your M21 M22 4 Speed Muncie Manual Transmission? we can help. Below you will find a detailed parts list for the M21 M22 manual transmission that includes complete rebuilt transmissions bearing rebuild kits with and without synchro rings, gaskets and seals, small parts kits, bushings, individual bearings, slider, synchro rings, forks, gears and shafts.
M22 "Rock Crusher" Identification. The M22 closeratio transmission is easily identified internally from the M20 and M21 versions by the angle of the gear teeth. The M22 was only produced in a closeratio version, so it will not appear on models with high rearaxle ratios ( or lower numerically) unless someone has changed it.
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 cars. They have the same gear ratios as the legendary M21 but with a heavy duty gearset.
Sep 06, 2017· Internal inspection of a 1969 Muncie M22 "Rock Crusher" Transmission. Note some wear on engagement teeth but all gears fully intact. 10 spline input, 27 spline output Case Number: / ...
Sep 15, 2010· Across the top of the page are the words "First Build 4/15/65 – 1st Shipment 4/19/65, recap of M22 (Rock Crusher) Trans." By comparing these M22 transmission assemblies to Chevrolet''s 1965 transmission identification codes, I found a perfect match.
1964 to 1968 Muncie 4speed transmissions can be identified from later models by the way the transmission arms attach. Early Muncie side covers had a stud and the shift arm attached with a nut on the stud while the 1969 and later model side covers had a hole and the shift arms attached with a bolt.
The :1 ratio is commonly referred to as the M20. Muncie also had a second closeratio transmission designated M22 and often referred to as the "rockcrusher," which was used behind the highestperformance engines and in Corvettes, the M22 is a highly soughtafter performance transmission.
Apr 30, 2009· The Rock crusher was the M22 Muncie close ratio 4 speed transmission favored in the ''60''s GM hot balanced, smooth shifting and after ''60 Aluminum cased capable of a lot of HP.
Muncie 4 speed transmission Camaro Nova Chevelle wide ratio M20 5 out of 5 stars 5 product ratings 5 product ratings Muncie 4 speed transmission Camaro Nova Chevelle wide ratio M20
NEW DESIGN MUNCIE M22 ROCK CRUSHER CLOSE RATIO 4 SPEED. THIS IS THE M22 TRANSMISSION THAT GM COULD NOT BUILD! Newly designed STATEOFTHEART Muncie front case from "Auto Gear". This is by far the "BEST" replacement aluminum case ever built for a Muncie! The front bearing is a "SEALED" bearing, and slightly thicker than the original Muncie''s ...