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. Looks like you have a second design-feb. 28th, 1968, M20 or M21. Definitely not a rock crusher(no straight cut gears).
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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.com. 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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Michael Welage on Auto Gear Super Case Muncie M22 4-Speed Rock-Crusher, Camaro 4-speed 10/27 or 26/27spl. SALE ENDS FRIDAY!! Shawn Riley on Muncie Super Duty M23 Super Case 4-speed Road or Drag Racing Rock-Crusher. SALE ENDS FRIDAY!! Michael OBrien on NEW Auto Gear Super Case Muncie M22 4-Speed Rock-Crusher Street/Strip. Camaro, Corvette
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This is a Very Rare and Completely and Freshly Rebuilt M-22 Transmission with REAL GM Rock Crusher Gears for 1970 1971 and 1972 GM Vehicles including, Chevy, Corvette, Camaro, Chevelle and other GM vehicles of that vintage These first came out in the 1970 Chevelle with the fine spline input and they were then released in the 1971 and 1972 Corvettes and other GM Cars.
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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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It was primarily designed as a road race transmission. The straighter angle of the gearset produced less heat and less end loading of the gear train. 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
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A video with better audio of the nostalgic sound of a Muncie M22 (Rock Crusher) transmission at work in a 1966 Chevrolet Chevelle.
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1970 M22 P0t17c Rock Crusher Muncie 4 Speed Transmission Case 3925661 Dec 17th $399.00 1968 Muncie Transmission 4 Speed M20 3925660 Corvette Vin 18s401683 P8p25
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View Item Details. 1994 Corvette C4 Zf 6 Speed Manual Transmission 91k S6-40 Complete Great 89-96. $2093.99. View Item Details. Corvette Original 4-speed Manual Transmission Shifter W Lever 1968-19763960609. $199.00. View Item Details. 1963 Corvette Impala 409 Borg Warner 4 Speed Transmission Aluminum T-10 Rat Rod. $749.00.
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Michael Welage on Auto Gear Super Case Muncie M22 4-Speed Rock-Crusher, Camaro 4-speed 10/27 or 26/27spl. SALE ENDS FRIDAY!! Shawn Riley on Muncie Super Duty M23 Super Case 4-speed Road or Drag Racing Rock-Crusher. SALE ENDS FRIDAY!! Michael OBrien on NEW Auto Gear Super Case Muncie M22 4-Speed Rock-Crusher Street/Strip. Camaro, Corvette
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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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This 1968 Corvette took 7th in class and 15th overall at the 1972 24-Hours of Le Mans race. Although the Dave Heinz-Bob Johnson team was a private effort, Chevrolet unofficially supported them and provided the team with an L-88 427 ci engine and M-22 Rock Crusher transmission.
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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.
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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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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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What is a Muncie Rock Crusher transmission? An M-22 Rock Crusher is a Muncie four-speed transmission for cars made by General Motors in the 1960s. …You can identify several unique signs that identify an M-22 Rock Crusher, even if it does not have a GM hallmark imprinted on its surface.
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NEW Muncie M22 SUPER ROCK CRUSHER 4 speed $2399.00. No Price Muncie Overhaul Kit. Complete overhaul kit for Muncie 4 speed transmissions. Must specify if your transmission has a 1" or 7/8" cluster shaft (pin) 7/8" kit comes with NON stepped synchronizer rings. Please scroll down to order extras (cluster pin, wrench,sliders etc) From $114.95
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Rock Crusher M-22 Transmission. The transmission functions like a brand new transmission! It was shipped in a sturdy crate. Seller installed a new pencil gear to match the rear end ratio and tire height for free. Very happy with the purchase.
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How to Rebuild a Muncie Four-Speed Transmission
Built in 1972 by Fred Kepler to race in IMSA and SCCA Trans Am and A/P competition. Fred Kepler transformed a factory equipped L71 427/435 hp car and built it to full L88 specifications, including a 650 hp 427 with M22 “Rock Crusher” transmission, with the intent to complete in IMSA, FIA and SCCA Trans AM. Upon completion the car was raced
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This is for an Original REAL, "1 of Only 57 Made", M-22 Rock Crusher Transmissions that were installed in late-production 1965 Corvettes. It is a used 1965 Chevy Corvette VIN S116716 M-22 M22 Rock Crusher Muncie Transmission Assembly including a factory machined and installed factory correct drain plug. This likely came from the very first Muncie pre-production
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From 1965-onwards the Rock Crusher was available with the Corvette, and by 1969 it was found on vehicles as diverse as the Chevelle, the Camaro, and the Oldsmobile 442. If a car made big power, chances are a Muncie M22 was on the menu. Still A Strong Choice
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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
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Dealers used this basic equipment package to offer customers rock-bottom Corvette pricing. In 1968 a total of 326 3-speed Corvettes were built; in 1969 the number fell to 252 for this rare shifter. This is the location of the date code stamped on the case of a Muncie transmission.
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This is for an Original REAL, "1 of Only 57 Made", M-22 Rock Crusher Transmissions that were installed in late-production 1965 Corvettes. It is a used 1965 Chevy Corvette VIN S116716 M-22 M22 Rock Crusher Muncie Transmission Assembly including a factory machined and installed factory correct drain plug. This likely came from the very first Muncie pre-production
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The RPO ZR1 option included the LT1 engine, M22 (Rock Crusher) transmission, heavy-duty power brakes, transistor ignition, special aluminum radiator, and special springs, shocks, front and rear stabilizer bars and metal fan shrouds.
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70-74 C3 Corvette Chevelle Camaro Nova M22 Muncie 4 Speed "ROCK CRUSHER" Transmission-Fine Spline Input Shaft (26)--All New Parts--Italian Gears---Large Turbo 400 Output Shaft. GM #3925661. We can have the case stamped to match a car for a numbers matching build---call for details.
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NEW Auto Gear Super Case Muncie M22 4-Speed Rock-Crusher Street/Strip. Camaro, Corvette, Chevelle, Nova. SALE ENDS FRIDAY!! $ 2,999.00 $ 2,699.00
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A video with better audio of the nostalgic sound of a Muncie M22 (Rock Crusher) transmission at work in a 1966 Chevrolet Chevelle.
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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
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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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