2019913 · The transmission in the 1971 Vette was an M22 “Rock Crusher” Muncie, similar to the one I had in my 1968 Camaro SS/RS 396-375. It was way more “whiney” than the M21, but had much better gears for long lasting, high performance durability. The carburetor was also the same as my Camaro, an 800 CFM Holley double pumper, …
view more“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 performance cars built for Chevrolet and all performance oriented G.M cars. They have the same gear ratios as the legendary M21 but with a heavy duty gearset.
view more2016426 · 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.
view more20221128 · • Freshly rebuilt matching #'s Pontiac 455HO V8@335hp, • matching #'s Muncie M22 “rock crusher” transmission, • Safe-T-Track (Posi) rear differential, • mirror finish correct coded “11” Cameo white paint w/correct blue stripes and 455HO callouts+shaker hood, • New correct coded black bucket seat interior w/factory console, • Great looking 3 …
view more2024417 · 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.
view moreTHIS IS OUR Complete M22 gear train for the Muncie 4 Speed with 26 clutch spline input. This kit will replace original M20 / M21 or M22 sets. You receive what you see, input, cluster, 1st 2nd, 3rd, reverse drive idler. This is the M22 17 degree gear set of the famed "Rock crusher" in original "close" ratio, which are as follows, 1st gear 2.20 to 1, 2nd gear …
view more201494 · The most popular question has to be that everyone thinks they have the famous "rockcrusher" M22 4 speed. This had the same gear ratios as the M21 but with a heavy duty gearset. The reason you may ask? Well it wasn't designed so that you could go drag racing on Saturday night or impress girls in front of Burger King by doing massive …
view moreGM Muncie 4-Speed Decoding. The Muncie 4-speed transmission was used with many different GM models and engine combinations from 1963 through 1974. The basic design and operation theory of the gearbox changed little during this period, however several design upgrades and modifications were made during the total production run.
view moreBased on over 30 years' experiences in design, production and service of crushing and s
GET QUOTE