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what manual transmission is called rock crusher

what manual transmission is called rock crusher

It's a GM Muncie M22 four speed, used in high performance applications from 1965 to 1972. They had a lower helix angle in the gears and had a noticeable whine that very few other transmissions had. If you were running a GM hotrod, that was the manual trans to have. They're tough, like a rock crusher.

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  • Guide to Muncie M20 M21 and M22 Four Speed Transmissions

    Guide to Muncie M20 M21 and M22 Four Speed Transmissions

    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 produced from 1963-'74 …

  • Muncie M22 Rockcrusher Transmission For Sale

    Muncie M22 Rockcrusher Transmission For Sale

    Performance Built Muncie M22 Rock Crusher 4 Speed Transmission. This unit has been rebuilt at our state of the art facility. We have carefully engineered a process that allows us to bring you a product we can stand behind. This is a direct replacement for the following Chevrolet ,Oldsmobile, Buick, and Pontiac vehicles. Compatible Vehicles.

  • Magical Muncie Four Speed Hotrod Hotline

    Magical Muncie Four Speed Hotrod Hotline

    An M-22 holds up well. The downside is that it tends to make noise. It will rattle at low rpms and whine at higher rpms. 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.

  • Get Geared up To Decipher Your Chevy 4 Speed Manual

    Get Geared up To Decipher Your Chevy 4 Speed Manual

    Noting its location in situ can also identify the variation. The M22 or so-called Rock Crusher usually partnered up with big-block engines. Serial Number. The serial number is where the money shot lies. It offers a lot of information to complete the story of the four-speed manual transmission. This figure is usually stamped and not a part of ...

  • How to Identify Your Transmission NastyZ28.com

    How to Identify Your Transmission NastyZ28.com

    Feb 01, 2013 Muncie 3 speed Manual Muncie 4 speed manual transmissions Suffix 1st gear ratio A 3.03:1 B 2.42:1 Suffix 1st gear ratio A 2.52:1 wide range B 2.20:1 close range C 2.20:1 Rock Crusher Of course like engines, transmissions come and go over time, so below is the (as complete as I can make it) transmission plant prefix list:

  • The Muncie 4 Speed Transmission Taught A Generation Of

    The Muncie 4 Speed Transmission Taught A Generation Of

    Jun 09, 2021 The Muncie 4-speed transmission is a legend among fans of GM muscle cars. For a 10 year period starting in the golden age of 1960s performance, General Motors' Muncie, Indiana transmission factory churned out several different flavors of this manual gearbox. This imprinted the name on the brains of drag racers and high performance fans after it ...

  • Manual trans conversion Page 7 NastyZ28.com

    Manual trans conversion Page 7 NastyZ28.com

    Dec 14, 2020 No the M21 and M22 is the Muncie Rock Crusher . The M20 is the earlier version before they did the angle cut on the gear teeth and strengthened them. They are called Rock Crusher because of the whining sound they make in the lower gears. I added the Hurst Competition Plus Shifter and linkage which gives a closer shift pattern, well worth it!

  • When was the M22 first called quot rock crusher quot Page 2

    When was the M22 first called quot rock crusher quot Page 2

    Apr 29, 2016 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 …

  • how to identify an m22 rock crusher transmission

    how to identify an m22 rock crusher transmission

    The design of a RWD manual transmission, on the other hand, ... unchanged from the earliest 3 and 4 speed designs like the venerable M22 Rock crusher. .... It may be hard to tell from the stress contour, but the changes in the...

  • how to identify a chevrolet rock crusher gearbox

    how to identify a chevrolet rock crusher gearbox

    An M-22 Rock Crusher is a Muncie four-speed transmission for cars made by General Motors in the 1960s. Identify a transmission type correctly before fitting it into your car. If you have the ...

  • Chevy Transmissions Muncie 4 Speed M22 Rockcrusher

    Chevy Transmissions Muncie 4 Speed M22 Rockcrusher

    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 still produced a fair amount of gear noise thus the “Rockcrusher” name. These 4 speeds sound like a blower drive whining.

  • The 1965 Chevrolet M22 Rockcrusher Transmission The

    The 1965 Chevrolet M22 Rockcrusher Transmission The

    Sep 15, 2010 The 1965 Chevrolet M22 Rockcrusher Transmission: The Mystical Transmission. by Alan Colvin on September 15, 2010. Although all previously published data has denied or excluded the existence of the 1965 M22 transmission, this author has uncovered the trail behind this mystical transmission. The complete history of M22 prototypes is covered in Volume 2 of the book series …

  • How to Identify a M22 Rock Crusher It Still Runs

    How to Identify a M22 Rock Crusher It Still Runs

    An M-22 Rock Crusher is a Muncie four-speed transmission for cars made by General Motors in the 1960s. Identify a transmission type correctly before fitting it into your car. If you have the incorrect transmission, your car may not function properly. You can identify several unique signs that identify an ...

  • Muncie four speeds Hemmings

    Muncie four speeds Hemmings

    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 the 2.20:1 ratio M21 four-speed.

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