Identifying An M22 Rock Crusher In Ecuador

Muncie 4-Speed Identification Guide

Just three types of Muncie 4-speeds are available based on the RPO (regular production option) code used when a car was ordered: the M20 (standard wide-ratio), M21 (close-ratio), and M22 (heavy-duty close-ratio). (The M does not …

Why is the Muncie M22 called the rock crusher?

In the 1970s, virtually all Muncie four-speeds had 26-spline input shafts. 8. The M22 Rock Crusher 26-spline input shaft sports a wider gear for greater torque capacity. How much oil does a m20b25 take? ... The M20 and M21 transmissions produced from 1963-'74 are easy to identify in both wide- and close-ratio units. The M22 to come later in ...

Is this a real M22 Rock Crusher?

The 764 extension housing indicates the transmission has a 32 spline output which all 71 through 74 M20, M21, and M22 Muncies and the 1970 M22 had. A M20 with the 32 spline output and 26 spline input is a desireable Muncie as it was stronger than earlier Muncie M20s.

Identifying muncie m22 vs m20 transmissions

By examining gear ratios and physical differences, we'll uncover the essential details that can help us identify each transmission accurately. Join us as we unravel the nuances between these two iconic gearboxes and enhance our knowledge of Muncie transmissions. Key Features of the Muncie M22 Transmission

Muncie 4-Speed Identification Guide

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How To Identify Chevy Four-Speed Transmissions

The Muncie four-speed was produced in two ratios: the wide ratio (M20) and the close-ratio (M21). That being said, there was a second, close-ratio version (M22) that was developed to survive duty behind engines with a …

'69 Z28 Transmission

I believe all first gen Z/28s were available with only the close ratio Muncies. This would be the M21, which most had, and the M22 which very few had. You're right about the guy being way off. Guys always say they've got a rock crusher when they are refering to any Muncie, there are big differences as we know. The M20 is a great trans though.

Muncie 4-speed Transmissions | The Online …

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 …

M21 M22 4 Speed Muncie Manual Transmission

Below we provide a M21 & M22 parts illustration to assist you with the correct identification of the parts you need. Select the parts you require from the following list and give us a call. ... Rebuilt Transmission M22 1966-1974 Rock Crusher MTGM038. Rebuilt Overhaul Bearing Kits M21 & M22 Transmission. Kits w/OE Style Bearings.

Is this a real M22 Rock Crusher?

All have angle cut gears, the M22 has lesser angles to the gears than the M20/M21 gears is all. View this. The 764 extension housing indicates the transmission has a 32 spline …

Muncie M22 Rock Crusher 4 Speed 2.20 Close Ratio …

For sale is a professionally built Muncie M22 4 speed with the driver side speedo tail found in GTOs, Chevelles, Impalas, earlier Corvettes, and other GM vehicles. 10 spline input, 27 spline output. Muncie M22 Rock Crusher 4 Speed 2.20 Close Ratio Transmission Driver Side Speedo | …

M22-Wide vs M22 "Rock Crusher" | Page 2

M22-Wide vs M22 "Rock Crusher" Jump to Latest 21 - 38 of 38 Posts. 1 2. H. Hi-po SS 454 ... The M22W set manufactured by Autogear was designed to be a better alternative to the M22 since most do not like the 2.20 1st gear ratio of the M22. It also has a better ratio spread then a conventional M20. It maintains the M22 gear helix angles.

Muncie M22 Rock Crusher Input 10 Spline

Muncie M22 Rock Crusher Cluster Gear 1″ $ 210.00 – $ 242.00 Select options This product has multiple variants. The options may be chosen on the product page Muncie M22 Rock Crusher Second Gear $ 115.00 Add to cart; Muncie M20 Wide Ratio First Gear $ 126.00 – $ 150.00 Select options This product has multiple variants. The options may be ...

When was the M22 first called "rock crusher"?

True enough the M22 did trickle out the door in 1965-67 and was buried in the option lists. It was around 1968 that easy to find the M22 on option lists, but the significant extra cost was a way to dissuade all but the most serious of gearheads. Drain plugs came to the M22 first, as did the fine splines.

GENERAL MOTORS MUNCIE 4-SPEED MANUAL …

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M22 Rock Crusher

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...

M-22 "rock crusher" | Page 2

Information Exchange. Bench Racing. M-22 "rock crusher"

Muncie M22 4 Speed Transmission Rock Crusher Close Ratio …

Muncie M22 4 Speed Transmission, rock crusher heavy duty with all new gears, close ratio 2.20 1st gear, remanufactured with attention to detail and professional assembly, the case was cleaned and blueprinted to OEM specifications, 1" counter bore with proper leak free interference fit, new gears, synchronizers, bearing retainer, major overhaul kit, 10 spline input …

M22-Wide vs M22 "Rock Crusher"

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 which the gear teeth were cut.

Muncie M22 Rock Crusher 4 speed

I do not claim to be a transmission expert and could be wrong but the "real" rock crushers had straight cut gears....not helical cut gears. I believe they were first released by GM in 1969 or 1970. I had one in my 1970 Chevelle SS 454-450HP LS6 car. I bought it new. The Rock Crusher was very noisy due to the straight cut gears.

How to Identify Your Muncie 4-Speed Transmission

M22: Known as the "Rock Crusher", designed for high-torque applications. Using these tips, you can confirm whether you have the right transmission for your Chevy and make informed decisions about any potential restorations or modifications. Feel free to share your findings or ask if you have questions about specific codes you encounter!

Muncie I.D. chart | Chevy Tri Five Forum

M22 transmissions can only be identified removing the selector cover(side cover) and visually identifying the straight cut gears-all other muncie transmissions had conical cut(angle) gears. The most well known Muncie …

Identifying Muncie 4 Speeds III by Paul Cangialosi

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 …

How to Build a Bulletproof Muncie M22 Four-Speed Transmission …

The Muncie M22 is known as the Rock Crusher. See how we improve its strength and versatility by adding a Gear Vendors Overdrive. Cam Benty Writer John McGann Photographer Nov 04, 2022.

Muncie Identification | The H.A.M.B.

M22 transmissions can only be identified removing the selector cover(side cover) and visually identifying the straight cut gears-all other muncie transmissions had conical cut(angle) gears. The most well known Muncie …

Muncie Calendar Date Codes — D.M.E. Transmissions

1969-1974 codes include a suffix letter at the end to aid in identification of transmission ratios. A = 2.52 1st gear wide ratio M20, B=2.20 1st gear close ratio M21, C = 2.20 first gear Rock Crusher M22. One example code would be ( …

Muncie 3 speed transmissions

GTO 3-Speed Transmission, 1972 GTO, Heavy Duty 3-speed transmission, Dearborn, Muncie, M13, M12, Muncie M20, M22 rock crusher, Auto Round-Up MagazineA: L.C., thanks for the nice words. The transmission listed on the build sheet you sent me is indeed the Heavy Duty 3-speed transmission I spoke of in the a recent Auto Roundup/Car Collector …

How to Tell an Muncie M22 from an M20 Transmission

Here are some key factors to help you distinguish between these two popular transmission types: 1. Transmission Designations M20: This is often recognized as the …

Muncie 4-Speed: The Complete History

This is the current Muncie M22. Your can see that the layout of the geartrain is identical to the ST10's. All gears and synchronizers are in the same position. Notice how the angle of the M22 gears is much straighter than on the ST10. The noise level increased because of this angle, giving the M22 the nickname "RockCrusher."

M22 4 speed rock crusher

I have a 1970 m22 close ratio 4 speed from a 1970 ls6 I owned back I the 80s. Here is the info. ... Spending" 3000$ on a bolt on, period correct, grin inducing almighty and mythical transmission that is the great Muncie M22 Rock Crusher makes more sense for many compared to buying a retrofit kitted TKX for 5 000$.