how to identify a m22 rock crusher ehow. 1970 chevrolet chevelle ss this is a real ss454 ls6 m22 rock crusher 4 speed transmission 1970 chevel m22 rock crusher transmission parts
He tells us both the M20 wide-ratio and M21 close-ratio transmissions were first offered in 1963. 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 close-ratio units.
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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 close-ratio units.
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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 is stronger than the early 27-spline, and the newer units seem to perform better in high-rpm and high-horsepower applications.
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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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Look for the “GM” sign imprinted on the transmission box to identify the manufacturer of the transmission. Check whether there are any rings around the shaft splines. An M-22 “Rock Crusher” has no rings, so if you see rings in your transmission, it means it is not an M-22 “Rock Crusher.”.
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The 2.20:1 ratio is commonly designated as the Muncie M21 transmission. 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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However, the Rock Crusher was only equipped in cars that had high-performance big blocks, including the Corvette, Camaro, Firebird and Chevelle. Thanks to the similarities between the M20, M21 and M22 transmissions, you can use a combination of Muncie 4-speed transmission parts to build the transmission you want for your project car.
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Look for the “GM” sign imprinted on the transmission box to identify the manufacturer of the transmission. Check whether there are any rings around the shaft splines. An M-22 “Rock Crusher” has no rings, so if you see rings in your transmission, it means it is not an M-22 “Rock Crusher.”.
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Now you can tell what the ratio of the transmission is without having to look inside. It’s still a good habit to double-check the gears to confirm the ratio because often the ratios were switched around. Main Cases. Let’s take a look at how the Muncie main case evolved from 1963 to actually going into an early 1968 car. 1974.
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3 Muncie 4 speeds were offered. The M-20 wide ratio, the M-21 close ratio, and the "Extra heavy duty close ratio" M-22, also known as the "Rock Crusher". The M-22 was generally installed behind severely powerful (high torque) big-block engines. The M-22 is distinguished from an M-21 by the angle of the gear teeth. The M-22 has "straight cut" gears.
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Muncie Close Ratio
The Muncie 4 Speed came in 3 basic models… the M-20, M-21 & M-22. The Muncie M20 was a wide-ratio transmission and was intended for basic street drive-ability and basically for cruising your car . The first models had a 2.56:1 first gear. The later 1966-1974 units had a 2.52:1 first gear.
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Auto Gear’s “Syracuse 4-speed” is a Muncie on steroids. General Motors received royalties for every T10 sold from BorgWarner, so you have to wonder why they would bother making their own 4-speed at the Muncie plant. It appears that BorgWarner had an exclusivity contract with General Motors until 1960.
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The M20 and M21 used a gearset with a more angled tooth design on each gear (left). The M22 Rock Crusher used a gearset that features less of an angled-tooth gearing (right). Images courtesy chevelles.com. The gear ratio of the Chevy four-speed transmission placed in any car was usually determined by the engine size and rearend axle ratio.
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Discussion Starter · #1 · Sep 25, 2004. Hi. I have a 1967 Camaro, thats originally a 6 cyl car, but now has a 327 with a Muncie Tranny in it, I have a bunch of part numbers and serial numbers off the tranny and I was wondering if someone could tell me if it is a Rock Crusher transmission. the numbers off the case are: 3857584.
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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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MUNCIE M22 GEAR SETS UNAVAILABLE UNTIL LATE FEB. 2022. New Muncie M22 2.20 close ratio or 2.52 wide ratio Rockcrusher gear set is availabe with either a 10 or 26 spline input.
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The M21 & M22 is a four speed, RWD or 4WD transmission. The M21 & M22 is a Muncie engineering design, this transmission is aluminum case, extension housing and side cover. The side cover has seven bolts and two shift cams. The synchro rings have 35 teeth and the unit has a 4 step cluster gear. The reverse gears are helical cut and are located
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The M20 and M21 used a gearset with a more angled tooth design on each gear (left). The M22 Rock Crusher used a gearset that features less of an angled-tooth gearing (right). Images courtesy chevelles.com. The gear ratio of the Chevy four-speed transmission placed in any car was usually determined by the engine size and rearend axle ratio.
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how to identify a m22 rock crusher ehow. 1970 chevrolet chevelle ss this is a real ss454 ls6 m22 rock crusher 4 speed transmission 1970 chevel m22 rock crusher transmission parts
Rock Crusher Transmission Wiki. Can someone tell me how much a muncie m22 rock crusher is worth this transmission was produced buy gm in 19661967. get price. meteo crusher lylat wiki. feb 15, 2013. prices / quote. wikipedia rock crusher. rock crusher the full wiki. a crusher is a machine designed to reduce large rocks into smaller rocks, gravel, or rock dust.
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64-up m-22 (rock crusher) muncie transmission fine (26/32) with 3925661 case (brand new transmission has 26 spline input shaft & 32 spline output shaft at the drive shaft
Recent Comments. William Reehil on Muncie Super Duty M23 Super Case 4-speed Road or Drag Racing Rock-Crusher. SPRING SALE ON NOW!!! Brad on GASSER MUNCIE SUPER DUTY M23 4-Speed. SPRING SALE ON NOW!!! glenn on Auto Gear Super Case M22Z Rock Crusher 4-speed. Perfect Performance with 2.73 to 3.42 Rear End Gears. SPRING SALE ON NOW!!!
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I have 67 Camaro with a factory M20 4-speed. The synchronizers are going bad and its time to replace the trans. The engine has been freshly built and pushing 450-500HP I am looking at either a Keisler 5-speed or the legendary M22 Rock Crusher from Midwest Muncie. Can anybody tell me if the M22...
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how to identify a m22 rock crusher ehow. 1970 chevrolet chevelle ss this is a real ss454 ls6 m22 rock crusher 4 speed transmission 1970 chevel m22 rock crusher transmission parts
M-22 “Rock Crusher” Identification The M-22 close-ratio transmission is easily identified internally from the M-20 and M-21 versions by the angle of the gear teeth. The M-22 was only produced in a close-ratio version, so it will not appear on models with high rear-axle ratios (3.55 or lower numerically) unless someone has changed it.
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An m-22 "rock crusher" is a muncie four-speed transmission for cars made by general motors in the identify a transmission type correctly before fitting it into your car. If you have the incorrect transmission, your car may not function properly.step count the input shaft teeth to find out the make of the transmission. input shafts differ in
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warped. If you plan to do a lot of racing, the TH400 will help your consistency. Running a high revving engine through the gears on the street is a lot of fun, but a manual is not the best choice for racing. If your car is truly capable of running 9''s, I would be worried about the longevity of either of the 2 manual transmission.
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M22 rock crusher transmission parts
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 is stronger than the early 27-spline, and the newer units seem to perform better in high-rpm and high-horsepower applications.
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Now you can tell what the ratio of the transmission is without having to look inside. It’s still a good habit to double-check the gears to confirm the ratio because often the ratios were switched around. Main Cases. Let’s take a look at how the Muncie main case evolved from 1963 to actually going into an early 1968 car. 1974.
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The transmission would make the same rock crusher noise, but I would have a much tougher transmission. 1966 Charger (383, 727 Torqueflight) 1970 SS 454 Chevelle (LS5+2, M22, 3.31 12 bolt)
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How can you tell if you have a rock crusher M22? Look for the “GM” sign imprinted on the transmission box to identify the manufacturer of the transmission. Check whether there are any rings around the shaft splines. An M-22 “Rock Crusher” has no rings, so if you see rings in your transmission, it means it is not an M-22 “Rock Crusher.”
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M Rock Crusher Transmission. M Rock Crusher Transmission. Muncie 4 speed.M21, M22, Rock Crusher The H.A.M.B. I was just wondering how many different variations there are of the Muncie 4 speed and which ones are best and M Rock Crusher Transmission Gear Ratios . Pontiac Street Performance Which Muncie Ive finally come to a decision on the
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muncie m rock crusher craigslist
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 Muncie 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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