Rock Crusher Transmission

Aug 21, 2015· 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 man...

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A Muncie differs from a Saginaw transmission in that its reverse lever is in the tail housing, not the side cover. The difference between a Muncie and a Borg-Warner is the Muncie’s 7-bolt side cover (two less than Borg-Warner units). ... “Dump the Rock Crusher,” hot rodders say. People think all Muncie four-speeds are Rock Crushers, but ...

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Automatic transmissions Early models. The GM Hydra-Matic was a success and installed in the majority of GM models by 1950. Through the 1950s, all makers were working on their own automatic transmission, with four more developed inside GM alone.

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Find great deals on eBay for m-22 muncie rock crusher . Shop with confidence. Skip to main content. eBay Logo: Shop by category. Shop by category. ... 1967-72 Camaro & Firebird M22 Muncie Rock Crusher Transmission 2nd Gear. Brand New. $153.21. Buy It …

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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 incorrect transmission, your car may not function properly. You can identify several unique signs that …

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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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GM Muncie transmission rebuilt and guaranteed for 1 year. Correct fit for all 1969 - 1973 model Firebirds and Trans Ams. This one will have the holes on the side where a bolt will secure your shifter linkage levers. This is the M-22 Rockcrusher four speed. Designed for the highest performance.

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Oct 01, 2008· Difference between M21 and M22 Discussion in 'Transmission ... that option. Without taking the transmission apart, is there any way to tell the difference? Never having heard the two transmissions, I could not be able to tell the difference by sound. ... I don't know how many people I've had tell me "Oh ya this thing has a Rock Crusher ...

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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.

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A crusher is a machine designed to reduce large rocks into smaller rocks, gravel, or rock dust.. Crushers may be used to reduce the size, or change the form, of waste materials so they can be more easily disposed of or recycled, or to reduce the size of a solid mix of raw materials (as in rock ore), so that pieces of different composition can be differentiated.

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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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finally a show car transmission worthy of your ultimate show car vehicle: the m22! this iconic transmission is based upon the infamous “rock crusher” transmission made famous in the 60`s and 70`s by being installed in the l-88`s, big block 425 hp factory muscle cars and hot rods of the past.

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Muncie 4-Speed: The Complete History. To understand the evolution of the Muncie 4-speed you have to look at a series of engineering platforms that led to the final design of this transmission. The Muncie design has roots going back to 1935. I took the time to research the patent number that is cast into most Muncie main cases.

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Sep 03, 2015· 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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“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.

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The Muncie 4-speed transmission was used from 1963-1974 on several different GM vehicles and engine types. The Muncie was typically used in performance engines. Changing the oil on these transmissions can be tricky, as the oil-fill port is on the side of the transmission. You will most likely need a hose to fill ...

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Aug 03, 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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Sep 15, 2010· Across the top of the page are the words “First Build 4/15/65 – 1st Shipment 4/19/65, recap of M22 (Rock Crusher) Trans.” By comparing these M22 transmission assemblies to Chevrolet’s 1965 transmission identification codes, I found a perfect match.

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Muncie sm420 4 speed manual transmission w/ granny low (north liberty, ia) Sold at 125 $ This was removed from my 1971 chevy half ton pickup before the truck went to the crusher many years ago ( badly rusted body). but the transmission is from a mid 60s truck according to the casting numbers. working good when removed. has...

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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 ...

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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 "BEST" replacement aluminum case ever built for a Muncie! The front bearing is a "SEALED" bearing, and slightly thicker than the original Muncie's ...

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Apr 30, 2009· The Rock crusher was the M-22 Muncie close ratio 4 speed transmission favored in the '60's GM hot rods.Well balanced, smooth shifting and after '60 Aluminum cased capable of a lot of HP.

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Home of the world's best 4 speed muncie transmissions and parts. We also offer muncie rebuild kits, racing parts and m22 rock crusher 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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Dec 11, 2014· The nostalgic sound of a GM Muncie M22 "Rockcrusher" 4 speed manual transmission.

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Serial numbers for Muncie 4 speeds always begin with the letter "P". P stands for Muncie Plant. Not for passenger car as some self proclaimed specialists may think. The letter M was used to ID the Muncie plant for the Muncie 3 speed, so P was the next logical letter. The …

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Mar 30, 2009· That's where the 'whine' come's from with those transmission's.. Also, there's companies out there that are making new gear set's for Muncie's as well..not just stock replacement stuff either. You can outfit an M20 or M21 with Rock Crusher type gears, OR actually make a 3 speed O/D out of a 4 speed case. Forth being the overdrive obviously..

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