There are two ways you can tell the difference between the M21 and the Rock Crusher. The M22 has 27 teeth on the countershaft gear, while the M20 and M21 have 29 teeth. M20 …
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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 Motors ...
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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 …
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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 …
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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 …
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L30-s36T: M22 'Rock Crusher' 3879999 WT297-21A A17 Mainshaft 3rd Gear L27-s36T: except M22 3831747 WT297-11 L27-s36T: M22 'Rock Crusher' 3880845 WT297-11A A18 Mainshaft …
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One could take a donor muncie and reuse some hard parts and make an m22 wide trans. For those unfamiliar with the autogear m22w gear set, these are the m20 gear ratios cut …
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This M22Z trans was built for my 1970 Chevelle SS 402 bb stock configuration which had a frame off restoration 7 yrs ago. Changed from auto to manual. This made the Chevelle much more enjoyable to drive, a huge performance …
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the "rock crusher" name comes from the noise generated by the reduced helix angle on the gears... Not entirely sure, but I think the new "M22 Wide" still uses the same helix …
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There should be some support for ford trans behind a Pontiac- there were plenty of 3 spd Ford transmissions from Pontiac 31Vicky with a hemi, Sep 30, 2012. ... Poncho 400. I am …
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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 …
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NEW Muncie M22 SUPER ROCK CRUSHER 4 speed $2899.00. No Price Muncie Overhaul Kit. Complete overhaul kit for Muncie 4 speed transmissions. Must specify if your transmission has …
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1969-1974 codes include a suffix letter at the end to aid in identification of transmission ratios. A = 2.52 1st gear wide ratio M20, B=2.20 1st gear close ratio M21, C = 2.20 first gear Rock Crusher M22. One example code would be ( …
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The term "rock crusher" refers to the noise made by the meshing of the stronger helical gears in the M22. Later model 1971-'74 Muncies are also popular with racers, because these transmissions used a 32-spline output that …
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I have a '69 Z28 with a M-21 transmission, and I was told that it was the correct 4speed that came in the car from the factory. Is the M-21 the same as what they call a Rock …
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Home / 4 Speed / Muncie Super Duty M23 Upgraded Ultra Case 4-speed Road or Drag Racing Rock-Crusher. Memorial Day SALE!!! Rated 5.00 out of 5 based on 15 customer ratings (15 customer reviews) ... Really this guy knows his stuff, …
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Auto Gear Upgraded Ultra Case M22Z Rock Crusher 4-speed. Perfect Performance with 2.73 to 3.42 Rear End Gears. Memorial Day SALE!!!
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The Crusher "soft touch" transbrake switch requires less than 12 ounces of activation pressure and only has a total compression activation of .020 thouhs, compared to the 2 pound / …
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STRONGEST Direct Replacement M22 With NEW Muncie AUTO GEAR ULTRA CASE With The Strongest M22z ULTRAWIDE RATIO 4 SPEED …
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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 …
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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 …
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THIS IS OUR Complete M22 gear train for the Muncie 4 Speed available in 26 or 10 clutch spline input. This kit will replace original M20 / M21 or M22 sets. You receive what you see, input, …
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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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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 where your shifter linkage mounts. This is the Muncie M-22 Rockcrusher four …
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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 …
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The SM420 and SM465 are both Muncie transmissions, but Chevy also used Allison and Borg-Warner transmissions, as well as M-20, M-21 and M-22 "Rock Crusher" …
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Gear Set M22 Muncie 10 Spline Input 2.20 Ratio Rock Crusher Aluminum 4 Speed. Opens in a new window or tab. $498.75. sasase (10,281) 99.8%. 11 watchers. Manual Transmission 4 …
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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 …
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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.
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ORIGINALLY, in the beginning of the Muncie evolution, there was the M20(wide ratio) and the M21(close ratio). A VERY, VERY, VERY few Heavy Duty, close ratio Muncies were specially built for severe duty service (such as …
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