How to Identify a Muncie Four Speed: Build Date Codes, VINs, and Input Shaft ... also known as the "Rock Crusher." ... Most of the Muncie four-speed transmissions will have a casting date code on ...

M-22 "Rock Crusher" Identification The M-22 close-ratio transmission is easily identified internally from the M-20 and M-21 versions by the angle of the gear teeth. The M-22 was only produced in a close-ratio version, so it will not appear on models with high rear-axle ratios (3.55 or lower numerically) unless someone has changed it.

With mandatory options — including either the Rock Crusher four-speed or special Turbo 400 automatic — total cost for an LS6 was more than $1,000. Axles ranged from 3.31:1 to 4.10:1, with Positraction a $42 extra. The SS Chevelle had a handsome new dash, and on the road, exhibited far more poise than its weight and size would suggest.

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

A video with better audio of the nostalgic sound of a Muncie M22 (Rock Crusher) transmission at work in a 1966 Chevrolet Chevelle.

Muncie 4 Speed Transmissions. Muncie 4 Speed Rebuilding DVD is available now. Click here for information. Paul's Intro. Many people are always calling me or asking me at shows on how to identify Muncie 4 speeds. Not too many people actually know what type Muncie they have and most publications have done a fantastic job of giving out wrong ...

m21 rock crusher identification 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. You can identify several unique signs that identify an

Location: Bismarck, North Dakota. All 3 models of Muncie were used yet in early 1973. Part way through the production year, the supply ran out and after that, Borg Warners were used. If you have a 1973 Muncie, it could be a M20, M21, or M22. The numbers stamped on it would tell you what it was originally.

* MUNCIE Shaft Identification The above Muncie 4 speed transmissions can be distinguished from the style of the transmission arm attachment. Pre '69 Muncie's use a stud & nut at the indicated attachement point, while '69 and later Muncie's use a bolt as illustrated on the right. MUNCIE M-22 (453) G.M. 7 bolt side cover 1970, 454 Chevelle

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 reverse gears are helical cut and are located ...

This a BRAND NEW SUPERCASE M22 4-Speed Rockcrusher Style Transmission. Each new Auto Gear transmission is built from genuine Auto Gear parts, the highest quality available. This is a BEEFY version of the original Rock Crusher transmission.

How to Identify a M22 Rock Crusher | How to Identify a M22 Rock Crusher. An M-22 "Rock Crusher" is a Muncie four- speed transmission for cars made by General Motors in the 1960s. Identify a … »More detailed

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.

The Muncie 2.56 to 1 ratio gearbox became the commonly used unit for four-speed applications beginning with the 1964 Chevelles and Novas. It was also used in non-Chevys, in the Pontiac Tempest and Oldsmobile F-85/Cutlass models. The easiest way to identify a Muncie transmission is by its side cover. Muncies have seven bolts, two bolts on the ...

Muncie Rock Crusher transmission. Patent number 3088336.1965-1967. Large input bearing tail shaft identification testing number 384-6429 thick web tail shaft driver side mounted speed sensor 27 spline output shaft side cover identification 38846685 early side cover used 3857-584 tail shaft housing counter shaft 2722 1917 p0601 production date and …

It is the heavy-duty version of the 2.20:1 ratio M21 four-speed. Why is it called a rock crusher transmission? The reduced gear angle of the M22 created a problem with noise (hence the name "rock-crusher").

Rock Crusher Transmission Identification. Muncie M22 Rock Crusher Identification. Muncie rock crusher 4 speed transmission polrecreatie performance built muncie m22 rock crusher 4 speed transmission this unit has been rebuilt at our state of the art facilitye have carefully engineered a process that allows us to bring you a product we.

Transmission Identification 1964 to 1968 Muncie 4-speed 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 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 ...

While it's obvious that the four speed will use three shift-linkage arms and the three speed will have two, if the first letter is R, then you have …

4.9/5 (162 Views . 30 Votes) Saginaw four-speeds were manufactured from 1966-'86, and you can still find them in abundance at your local salvage yard or in many '60s, '70s and '80s donor cars. The four-speed transmission is very similar to the tried-and-true Saginaw three-speed and fits well behind six-cylinder and eight-cylinder engines.

Thanks to the similarities between the M20, M21 and M22 transmissions, you can use a combination of Muncie 4-speed transmission parts to build the transmission you want for your project car. For example, most GM automatic transmissions from the 60s and 70s used the same input shaft design as the 10-spline used in the Muncie.

new auto gear super case muncie m22 4-speed rock-crusher. Recent Comments. steve cooke on Muncie Super Duty M23 Super Case 4-speed Road or Drag RacingRock-Crusher. SUMMER SALE ON NOW!!! Mark A Jones Deltona Florida on Auto Gear Super Case M22ZRockCrusher4-speed. Perfect Performance with 2.73 to 3.42 Rear End Gears. SUMMER SALE ON NOW!!!

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 highest quality available. This is a BEEFY version of the original Rock Crusher transmission.

this a rare find. ... 454 cubic in with 365hp ls5, complete numbers matching, m22 rock crusher 4 speed transmission, f41... Get Price Identifying Muncie 4-Speeds - My 1967 Chevelle SS 396

Recent Comments. Joe Gio on Muncie Super Duty M23 Super Case 4-speed Road or Drag Racing Rock-Crusher. FALL SALE ON NOW!!! steve cooke on Muncie Super Duty M23 Super Case 4-speed Road or Drag Racing Rock-Crusher. FALL SALE ON NOW!!! Mark A Jones Deltona Florida on Auto Gear Super Case M22Z Rock Crusher 4-speed. Perfect …

The T-10 four-speed was an evolution of the T-85 three-speed transmission, with both of these transmissions being quite similar in appearance. If you've ever looked at a BorgWarner T-10 and a Muncie four-speed and gotten them mixed up, you are not alone because the Muncie (M20, M21, and M22) is a direct descendant of the T-10 according to ...

Combined with high impact alloy gears this 4 speed really pushed the limits of it's aluminum case in drag race applications. Although the gears are not spur gears ( completely straight ) they still produced a fair amount of gear noise thus the "Rockcrusher" name. These 4 …

This '70 Z28 has been restored across its last two owners and has the highly desirable M-22 "Rock Crusher" close-ratio 4-speed transmission. Located in Angola, Indiana, this well-documented Camaro is available here on craigslist for $59,000 OBO. Our thanks to Barn Finder Pat L. for bringing this well-done muscle car to our attention!

The Muncie 4 speed was created in response to the engine power levels in GM vehicles exceeding the limits of an earlier transmission, the Borg Warner T-10 4 speed. Although the Muncie 4 speed found it easier to handle engine's growing power, its design borrowed from that of the T-10 it was replacing and even used the same basic layout.

For sale 1976 Chevy Vega, Monza, no rust the car is in excellent condition, 350 Chevy engine, Muncie M22 rock crusher 4 speed transmission with Hurst shifter, carburetor was just replaced with Holley street avenger, Holley remanufactured, Headers, new tires, Air conditioning, door and hatch back seals replaced, new fuel pump, rear trans seal ...

GENERAL MOTORS "MUNCIE" FOUR SPEED 10-1-01 10 C8 Idler Gear (Front) L18-s27T: except M22 3831762 WT297-10 L18-s27T: M22 'Rock Crusher' 3879997 WT297-10B C9 Idler Gear Assy (Rear) L17-27T 3831764 AWT297-10A C10 Idler Gear (Rear) Thrust Washer all 3774909 3774909 C11 Idler Shaft all 3831761 WT297-35 C12 Idler Shaft Lockpin all 590832 …

rock crusher trans - ME Mining Machinery. How to Identify a M22 Rock Crusher | It Still Runs. 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.

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 Powerglide from 1964 through 1966 or, from 1967 on, the three-speed Turbo-Hydramantic M40 option, which would become known as the "Turbo 400."

M-22 "Rock Crusher" Identification The M-22 close-ratio transmission is easily identified internally from the M-20 and M-21 versions by the angle of the gear teeth. The M-22 was only produced in a close-ratio version, so it will not appear on models with high rear-axle ratios (3.55 or lower numerically) unless someone has changed it.

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 the 2.20:1 ratio M21 four-speed.