Therefore the Muncie patent is basically a design for the layout of a 4 speed transmission This layout is a 4 speed transmission with four forward gear ratios in the main case a midplate bearing support and a reverse gearset in the extension housing This Tech Tip is From the Full Book GM TURBO 350 TRANSMISSIONS HOW TO REBUILD AND MODIFY
Get PriceThe M 22 gear teeth are cut at a noticeably lower angle not quite at a straight angle as some people say This lower angle of the teeth imparts greater strength to the gears but it also increases the noise caused by the meshing of the gears This higher level of noise is where the nickname Rock crusher originated
Get PriceMuncie 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
Get PriceGM s goal with the Muncie four speed was to produce a better shift employing larger synchro cones He tells us both the M20 wide ratio and M21 close ratio transmissions were first offered
Get PriceHowever 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
Get PriceMunlce Rockcruser Speed 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
Get PriceThe M22 was designed as a road race transmission and the straighter angle of the gear teeth produced less heat and less end loading of the gears This decreased helix angle of the gear not only created a stronger gear set but it also produced a substantial amount of gear whine which is highly noticeable when driving the car
Get PriceThe 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
Get PriceThis 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 These first came out in the 1970 Chevelle with the fine spline input and they were then released in the 1971 and 1972 Corvettes and other GM Cars
Get PriceThe 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
Get PriceAugust 22 2024 Pete Dunton If you are like many four on the floor muscle car owners you will tend to overlook replacing the gear oil in your Muncie M20 M21 or M22 Borg Warner Super T 10 or Super T 10 4 speed transmission It is easy to overlook this type of general maintenance After all if you pop the hood you get reminded of changing
Get PriceI 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
Get PriceThe 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 The M22 has all new internal parts All exterior parts are hand picked visually inspected painstakingly restored or
Get Price· A m 21 will have a very short life in any thing 400 plus honest hp at 700 hp will suffer pretty much instant failure M 22 s are very few and far between and people often mistake m 20 s and m 21 s for m 22 s because they all use very similar aluminum cases A m 22 is much stronger but is still not up to the task of handling a true 700 hp motor with 100 traction for long I would look at some
Get Price1967 1969 Camaro Transmission Crossmember for TH 350 Muncie 4 SPD Small Block and Powerglide 1967 1968 Camaro Manual Console Floor Shift Boot 3 Speed or 4 Speed 1967 1968 Shifter Knob Ball White 4 Speed 5/16 Inch Thread 1967 1968 Camaro Hurst Four Speed Shifter Assembly Competition Plus Our Price $99 95
Get PriceEven after 45 years the Muncie four speed is still a very popular transmission with Chevrolet muscle car enthusiasts and it is easily adaptable to a wide range of GM and other non GM vehicles It debuted in 1963 Chevrolet full size cars and Corvettes and was originally available with two first gear ratios 2 20 to 1 and 2 56 to 1
Get PriceWe also carry and sell Complete Do It yourself Super Muncie Kits These kits contain everything to build a functional transmission that is superior in function quality and craftsmanship Multiple ratios Heavy Duty case center plate and tail Italian gear sets roller bearing clusters Heavy Duty shift plate M23 Super Finish shown
Get PriceNew brass rings and bearings have been installed Get the best deals for muncie m22 rock crusher at eBay GM Muncie M20/M21/M22 4 Speed Transmission Input Shaft Nut 77434 The SM465 was made by General Motors from 1968 to 20 Close Ratio Rock Crusher 4 Speed Trans Muncie 2nd Gear 30 Tooth M22 304582A $107
Get PriceThe M22 is what they called the rockcrusher right Is that the better trans Want to put this behind a 648 hp blower motor My gramma drives an auto I just want to have fun A stock Muncie even the fabled Rockcrusher will not last long behind that much hp at least not if there s any traction involved
Get PriceGM s goal with the Muncie four speed was to produce a better shift employing larger synchro cones 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
Get PriceJoined Dec 15 2024 163 Posts #4 · Dec 15 2024 Here is some test data from the 2 96 ratio Muncie transmissions that I used to build All standard helix units failed at 320 ft lbf of torque with about 0 030 case stretch All of the low helix sets failed at 390 ft lbf of torque with about 0 050 case stretch
Get PriceFind many great new & used options and get the best deals for Chevy GM Muncie M22 Rock Crusher Close Ratio 4 Speed Transmission 10 Spline at the best online prices at eBay Free shipping for many products item 6 Muncie M22 Gear Set 26 Spline Input 2 20 Close Ratio Rock Crusher 4 Speed Trans Muncie M22 Gear Set 26 Spline Input 2 20 Close
Get Price4 M22 4 Gear Trans Co Parts and Gears to rebuild GM 4 Speeds These are correct for the 1970 to 1974 Muncie 4 Speeds for Corvettes and GM Passenger Cars These are all the parts you need to convert your worn out Muncie 4 Speed to a M22 Rock Crusher Includes the new M22 Gear Set Input 1st 2nd 3rd Cluster and Front Reverse Idler Gears Dec 10 2024· The nostalgic sound of a GM
Get PriceAn M22 Rock Crusher was a good trans New ones for performance cars do the same thing but better Bear in mind that the only thing really special M22 vs M21 was that the M22 was close ratio box and that the gear teeth are cut differently in the M22 so they were less likely to break
Get PriceA muncie m22 rock crusher 4 speed manual transmission backs up to the 454 ls6 v8 making this super sport an absolute blast to drive this 70 chevelle ss is a very well optioned car as well this chevelle was ordered with and is equipped with power front disc brakes rpo j50 rpo jl2 providing plenty of extra stopping power for all of
Get PriceMetal gear 1 76 OD speedometer gear for Muncie part #3708145 for 27 splined 4 speed gearbox $50 Tweed Heads West NSW 21/01/2024 Holden HQ 1971 1974 Service Manual 5 Volume Set Thanks for looking at my advert Postage is free If you wish to place an order just pop me a quick message and I will send you the link to this set on my
Get PriceMuncie M22 4 Speed Rock Crusher Gear Whine YouTube Muncie M22 4 Speed Rock Crusher Gear Whine relicrestorerman 526 subscribers Subscribe 3 1K Share 495K views 7 years ago A video
Get PriceHow to Identify Muncie 4 Speed Transmissions 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 dead 2 20 first gear ratio which is the same in the M21 is not that good for off the line acceleration You
Get PriceI know that the M22 was supposedly stronger than the M21 and that the close ratio rock crusher was supposed to the the beefiest but not sure why or if this is even true Anyone have any input Buzznut Jun 26 2024 SHARE POST #1 kasselyn29 likes this Shifty Shifterton Member from Central Iowa M20 = wide ratio M21 = close ratio
Get PriceMuncie M22 — 4 speed longitudinal heavy duty close ratio manual transmission made by GM at their Muncie Indiana factory Saginaw M26/27 transmission — 3 and 4 speed longitudinal light duty less than 300 hp wide ratio manual transmission made by GM at their Saginaw Michigan factory Muncie M62/M64 — 3 speed longitudinal transmission made by GM
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