Muncie 4-Speed: The Complete History
It is from a Saginaw 3-speed, casting number 591620. It can be used as an adapter-bearing retainer. It was an old trick to enable small-retainer transmissions to correctly pilot to large retainer-bore bellhousings. If you attach a small …
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New Auto Gear Upgraded Ultra Case Muncie HD M22 4-Speed Rock-Crusher …
STRONGEST Direct Replacement M22 With NEW Muncie AUTO GEAR Upgraded Ultra CASE With The Strongest M22w WIDE RATIO or Close Ratio Gears for a 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…
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M22 4 speed rock crusher
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. ... " 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 ...
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M-22 Rock Crusher 4-Speed Transmissions by …
NEW DESIGN MUNCIE M22 ROCK CRUSHER CLOSE RATIO 4 SPEED. THIS IS THE M-22 TRANSMISSION THAT GM COULD NOT BUILD! Newly designed STATE-OF-THE-ART Muncie front case from "Auto Gear". This is by far the …
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Muncie 4 speed....M21, M22, Rock Crusher? | The H.A.M.B.
That's where the 'whine' come's from with those transmission's.. Also, there's companies out there that are making new gear set's for Muncie's as well..not just stock replacement stuff either. You can outfit an M20 or M21 with Rock Crusher type gears, OR actually make a 3 speed O/D out of a 4 speed case. Forth being the overdrive obviously..
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Muncie Parts
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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Complete Guide to Muncie Transmissions
The Muncie transmission is a bit outdated by today's standards with no overdrive, but still holds a place in the restoration and sentimental value markets. ... The M22 Rock Crusher 26-spline input shaft sports a wider gear …
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What is a rock crusher transmission?
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 …
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The Rarest Muscle Car Transmission In The '60s
The M22 used the same close ratios as the M21 gearbox. However, compared to the M22, the M22 Rock Crusher from 1966 was a high-performance gearbox that was even more durable. The M22 Rock Crusher used straight-cut gears (usually used in racing gearboxes), which led to its signature transmission whine, earning the "Rock Crusher" name.
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NEW Muncie M22 SUPER ROCK CRUSHER 4 speed …
Transmission Yokes: M5R1 / M5R2: Clutch Packs: GEARBOX TEE SHIRT: Miscellaneous: Discontinued, Used, Sale. 1st gear: Shipping: Contacts: Instructional Videos: MT82: Muncie Parts > NEW Muncie M22 SUPER ROCK CRUSHER 4 speed $2899.00. NEW Muncie M22 SUPER ROCK CRUSHER 4 speed $2899.00. View Images. Price: No Price: Sale Price: No Price:
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How to Identify a Muncie Four Speed: Build Date Codes
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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The Rarest Muscle Car Transmission In The '60s
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 ...
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American Chevy Muncie – M20, M21, M22 | Allstate Gear
However, the Rock Crusher was only equipped in cars that had high-performance big blocks, including the Corvette, Camaro, Firebird and Chevelle. 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.
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1967
1967 - 1968 Muncie 4 Speed Transmission, M-22 Rockcrusher Complete original 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 …
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Guide to Muncie M20, M21, and M22 Four-Speed …
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 …
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Firebird Central | 1967
1967 - 1968 Firebird Muncie Four Speed Transmission, M-22 Rockcrusher Complete original GM Muncie transmission rebuilt and guaranteed for 1 year. Works great 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 Rockcrusher four speed.
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M-22 vs. BW ST-10
Rock Crusher at best is a 38 year old transmission. Don't know what you plan on doing with it but the T-10 will be stronger. It will not be a direct bolt in to the best of my knowledge. The stock t-10's had different shifters and linkage, but you could probably use the same shifter but get a new mounting plate and linkage for the t-10.
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GM Muncie 4-Speed Decoding
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.
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When was the M22 first called "rock crusher"?
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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Brand New SUPERCASE M22 4-Speed Muncie Rockcrusher Style Transmission
This a BRAND NEW SUPERCASE M22 Muncie Rockcrusher Style Transmission. This is a BEEFY version of the original Rock Crusher transmission. Most all the weak points of an original Muncie have been solved by the Super-Case design. The Supercase has extra casting in all the known weak areas. The mid plate is aircraft grade aluminum.
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1969
1969 - 1973 Muncie Four Speed Transmission M-22 Rockcrusher 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.
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Chevy Transmissions: Muncie 4 Speed M22 …
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 …
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How to Identify a Muncie Four Speed
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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How To Identify Chevy Four-Speed Transmissions
The M20 and M21 used a gearset with a more angled tooth design on each gear (left). The M22 Rock Crusher used a gearset that features less of an angled-tooth gearing (right). Images courtesy chevelles. The gear ratio of the Chevy four-speed transmission placed in any car was usually determined by the engine size and rearend axle ratio.
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M-22 Rock Crusher Four Speed Transmission
Muncie Close Ratio - M-22 Rock Crusher Four Speed Transmission - ALL NEW GEARS (#123871668653) See all feedback. Product ratings and reviews. Learn more. 4.8. 11 product ratings. 5. 10 users rated this 5 out of 5 stars. 10. 4. …
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The 1965 Chevrolet M22 Rockcrusher Transmission: The …
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 …
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Muncie 4-speed transmission information
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.
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Muncie 4-speed
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.
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How to Rebuild a Muncie Four-Speed Transmission
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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MUNCIE M22 "ROCK CRUSHER"
This iconic transmission is based upon the infamous "ROCK CRUSHER" Transmission made famous in the 60`S AND 70`S by being installed in the L-88`S, BIG BLOCK 425 HP Factory Muscle Cars and HOT RODS of the past. The M22 has all new internal parts. All exterior parts are hand picked, visually inspected, painstakingly restored or replaced with ...
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