Jan 30, 2019 Muncie Rock Crusher Code Numder. Chevy 4 speed rock crusher manual transmission codes An M22 Rock Crusher is a Muncie fourspeed transmission The serial number is a date code the . Get More Info m22 rock crusher first gear id muncie rock crusher code numder The first is a main case casting Muncie Transmission Id Convert Muncie . Online Chat

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R27-22-19-17T: M22 ‘Rock Crusher’ (1966-74) 3905466 WT297-8E NOTE: these THREE (3) gears are used with 1 inch countershaft. C2 Countershaft 7/8 diameter (1963-65) 3831725 WT297-3 1 diameter (1966-74) 3864850 WT297-3A C3 Countershaft Thrust Washer 7/8 diameter req. 2 (1963-65) 3831729 3831729 1 diameter req. 2 (1966-74) 3864860 3864860

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A serial number is stamped on all Muncie transmission cases. The code has nine symbols that will reveal the GM division, year, model, assembly plant and car the transmission was used in. ... The M22 is called the Rock Crusher. “Dump the Rock Crusher,” hot rodders say. People think all Muncie four-speeds are Rock Crushers, but they’re not

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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. 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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Aug 07, 2018 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

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Feb 21, 2010 The most well known Muncie transmissions are the M20(wide ratio), M21(close ratio), and the M22(rock crusher). Although not mentioned much, there was also an M23 transmission that was used, beginning in 1970. The M23 is recognized by a 26-spline(fine) input shaft and a large output shaft that requires a T-400 driveshaft yoke

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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

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Apr 17, 2015 The 1971 transmissions were the same as from previous year, except that the M-21 close-ratio 4-speed transmission was replaced with a stronger version of the Mun cie close-ratio gearbox the famous M-22 “Rock Crusher” 4-speed. It was the strongest 4-speed manual ever installed in a GTO. This lineup remained unchanged in 1972

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The M22 is a strong and reliable gearbox. Produced in low volume from 1968 to 1971, the M22 earned the nickname “Rock Crusher” because its straight-cut gears made a distinctive noise while driving. It was designed for maximum performance and could usually be found installed behind L88s and other high-torque big-block engines

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Rock Crusher Gearbox Products. As a leading global manufacturer of crushing, grinding and mining equipments, we offer advanced, reasonable solutions for any size-reduction requirements including, Rock Crusher Gearbox, quarry, aggregate, and different kinds of minerals

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Aug 03 2018 GMs goal with the Muncie fourspeed was to produce a better shift employing larger synchro cones He tells us both the M20 wideratio and M21 closeratio transmissions were first offered in ...We are a professional mining machinery manufacturer, the main equipment including: jaw crusher, cone crusher and other sandstone equipment;Ball mill, flotation machine, concentrator and other

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Category: Uncategorized. 3ft cone crusher standar symons serial 31058. 4 speed transmission rock crusher . 4 speed transmission rock crusher Mining Quarry Plant. 2013-5-17 Here is a factory original GM Muncie M22 4 speed close ratio heavy duty transmission. This is the infamous Rock Crusher 4 speed unit that you always hear about

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The 2.20:1 ratio first gear is usually referred to as the Muncie M21 transmission; based on GM's production codes. The 2.56:1 ratio is referred to as the M20. Muncie also had a second close-ratio transmission coded M22 and known as the rock crusher, which was used behind performance big-block engines and in some Corvettes

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