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 …
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Learn how the 1965 M22 transmission, also known as the rockcrusher, was developed and installed in some Corvettes and passenger cars. See the …
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In 1965, GM introduced an even more robust version of the Muncie transmission, known as the M22 or "Rock Crusher." This transmission, with its distinctive whine, became synonymous with high-performance cars of the era. The M22 featured straighter cut gears, providing a more aggressive gear mesh for increased strength and durability.
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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 …
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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. ... thus the nickname "Rock Crusher" was …
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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 wide- and close-ratio units.
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"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.
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"Another change for the M22 was the new low helical-angle cut gear set which increased the inner strength of the transmission dramatically. This gearset was quite noisy and from all indications was called the "Rockcrusher" transmission from the beginning by all Chevrolet and Muncie engineering staff."
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Transmission and Rear Axle. The Chevelle SS 454 LS6 was available with 2 transmission options. The Muncie M22 (Rock Crusher) 4-speed manual and the 3-speed Turbo Hydramantic 400. A heavy-duty 12-bolt axle was standard with the buyer's choice of 3.31 or 4.10 gears. M22 Gear Ratios. 1st Gear2.20; 2nd Gear 1.64; 3rd gear 1.28; 4th …
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Last time we talked about how to distinguish a Muncie four-speed transmission from a Saginaw or BorgWarner and the different types of Muncie transmissions, including the wide-ratio M20, the close ...
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GM Muncie transmission rebuilt and guaranteed for 1 year. Correct fit for all 1967 - 1968 model Chevelles and Novas. This one will have the studs coming out from the side where your shifter linkage mounts. This is the Muncie M-22 Rockcrusher four speed. Designed for the highest performance models.
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Doe this mean it's still an M22 but just manufactured at the Saginaw assembly plant or it's not an M22 "Rock Crusher Transmission". I am just learning ! ... 1967 Chevy Biscayne 2 dr. 350 th-350 3.55 posi videos RatONaStick at idle RatONaStick on the road RatONaStick at the track.
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STRONGEST Direct Replacement M22 With NEW Muncie AUTO GEAR ULTRA CASE With The Strongest M22z ULTRAWIDE RATIO 4 SPEED TRANSMISSION. A GREAT HEAVY DUTY ROCKCRUSHER FOR YOUR CAMARO, NOVA, CHEVELLE, CORVETTE, GTO,442. THE MAIN CASE IS THE STRONGEST MADE with fill and drain plugs. C355 …
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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. The reason you may ask? Well it wasn't designed so that you could go drag racing on Saturday night or impress in front of Burger King by doing massive hole shots ...
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Transmission, Manual, 1971-74 GM, Muncie M22, 2.20 1st. Remanufactured 4-speed manual transmissions are now available from OPGI. Each transmission is disassembled, cleaned and inspected to ensure an outstanding final product. Each transmission features top-quality components throughout, as well as premium seals and gaskets for a leak …
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M22 4 speed rock crusher. ... 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$. ... A forum community dedicated to Chevrolet Chevelle owners and enthusiasts. Come join the discussion about …
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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 …
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Transmission, Manual, 1971-74 GM, Muncie M22, 2.20 1st. Remanufactured 4-speed manual transmissions are now available from OPGI. Each transmission is …
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American Chevy 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 ...
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Learn about the history, identification, and variations of Chevrolet's legendary four-speed transmissions for muscle cars. The M22 Rock Crusher was the strongest and most sought-after of the …
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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.
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Learn how the Muncie 4-speed transmission evolved from the BorgWarner T10 design and became the standard for GM muscle cars. See the patent, the geartrain, and the …
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He mentioned he had a M22 rock crusher in his car, and how rare it was because only a few of the M22's were "Rock Crushers". ... they all had that rare 68 chevy with a corvette 327, rock crusher muncie and a 12 bolt posi that they would shift from first to second around 60 mph. jim . Jim 70 chevelle, SS clone 454 4 speed 3.31 12 bolt posi ...
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The Muncie four-speed is as legendary as the cars that it was put into, with the M20, M21, and Rock Crusher M22 models all part of the hot rod vernacular.
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Learn about the origins, evolution, and features of the legendary Muncie four-speed transmissions, including the M22 "rock crusher" for big-block Chevrolets. Find out how to identify different …
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The first time I heard the term "rock crusher" was in reference to the transmission in the 1967 L88 Corvette. Due to the low gear angle there is a fair amount of gear noise, really like a medium / heavy duty truck transmission. True enough the M22 did trickle out the door in 1965-67 and was buried in the option lists.
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Get the best deals for Muncie M22 Rock Crusher 4 Speed Transmission at eBay. We have a great online selection at the lowest prices with Fast & Free shipping on many items! ... 1969 Chevy Camaro M22 Muncie 4 Speed Transmission 3925661 w/Shifter Big Block. Opens in a new window or tab. Pre-Owned. $3,950.00. or Best Offer +$229.58 …
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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 …
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Learn how to identify and differentiate the Muncie 4-speed transmissions (M20, M21 and M22) by their casting numbers, years, ratios and features. Find out the history, performance and applications of the M22 …
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4-SPEED MANUAL TRANSMISSION ASSEMBLIES, GEARS & PARTS APPLICATIONS: GENERAL MOTORS 1963-1974 GENERAL MOTORS (HIGH PERFORMANCE) AUTO GEAR EQUIPMENT ... L36-s36T: M22 'Rock Crusher' (1964-74) 3924796 WT297-12B NOTE: these TWO (2) gears w/o snapring counterbore on cone end: used w/o thrust …
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Among models from the 60s, the M22 Rock Crusher manual transmission can be found in models such as the C3 Chevrolet Corvette with the 435 hp L71 427 V8, 425 hp L72 427 V8, and the 500 hp L88 427 V8 engines, built between 1966-1969. The gearbox was also used in the first-gen Chevrolet Camaro with the same 425 hp L72 …
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Although some claim that the M23 is a 'rock crusher', it is indicated that this box was assembled in both wide and close ratio components and also with straight cut gears common to the rock crusher (M22) transmission. This chart, so far, has been very accurate in identifying the muncie trans. over the years, so I wanted to share.
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Rebuilt Transmission M22 1966-1974 Rock Crusher MTGM038. Rebuilt Overhaul Bearing Kits M21 & M22 Transmission. Kits w/OE Style Bearings. Drawing Image Description Part Number N.I. M20 (63-65) (72mm OD Input Bearing) TRSBK117A N.I. M20 (63-65) (80mm OD Input ...
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There also was a second, heavy-duty close-ratio version: the "Rock Crusher" (M22) that was offered on some of the high-performance big-block models, starting with the 1965 Corvette.
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