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Having issues diagnosing problems with your M21 M22 4 Speed Muncie Manual Transmission? we can help. ... Rebuilt Transmission M22 1966-1974 Rock Crusher MTGM038. ... Close Ratio 2.20 1st Gear TRSGK-M21A N.I. M21 (26 Spline 1″ Counter Shaft) Close Ratio 2.20 1st Gear TRSGK-M21B N.I. M22 (1st Gear Kit ...
The Muncie four-speed is as legendary as the cars that it was put into, with the M20, M21, and Rock Crusher M22 models all part of the hot rod vernacular.
Four speeds were available in GTO's, notably the Muncie M20 wide ratio, M21 close ratio and M22 rock crusher, and automatic fans had either a two-speed Powerglide from 1964 through 1966 or, from 1967 on, the three-speed Turbo-Hydramantic M40 option, which would become known as the "Turbo 400."
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 …
STRONGEST Direct Replacement M22 With NEW Muncie AUTO GEAR ULTRA CASE With The Strongest M22z ULTRAWIDE RATIO 4 SPEED TRANSMISSION. A GREAT HEAVY DUTY ROCKCRUSHER FOR YOUR CAMARO, NOVA, CHEVELLE, CORVETTE, GTO,442. THE MAIN CASE IS THE STRONGEST MADE with fill and drain plugs. C355 Forged Aluminum Mid …
70 chevelle, SS clone 454 4 speed 3.31 12 bolt posi 71 camaro. (owned since 1978!) 454-th400 3.07 12 bolt ... come guys, every gearhead knows every muncie is a rock crusher, every 327 came out of a corvette and all 12 bolts are posi's! ... it depended on your gear ratio which one your car came with. Supposedly you could only get the M21 with 3: ...
This a BRAND NEW SUPERCASE M22 4-Speed Muncie Rockcrusher Style Transmission. Each new Auto Gear transmission is built from genuine Auto Gear parts, the highest quality available. This is a BEEFY version of the original Rock Crusher transmission.
Tooth counts on the input shaft will help confirm a certain gear ratio. Identifying Muncie 4-Speeds. ... 1964 to 1968 Muncie 4-speed transmissions can be identified from later models by the way the transmission arms attach. Early Muncie side covers had a stud and the shift arm attached with a nut on the stud while the 1969 and later model side ...
Muncie RPO Codes . Just three types of Muncie 4-speeds are available based on the RPO (regular production option) code used when a car was ordered: the M20 (standard wide-ratio), M21 (close-ratio), and M22 (heavy-duty close-ratio). (The M does not stand for "Muncie.")
Recent Comments. Randall D Resler II on Auto Gear Upgraded Ultra Case M22Z Rock Crusher 4-speed. Perfect Performance with 2.73 to 3.42 Rear End Gears. SALE EXTENDED!!! Jeff Collins on Muncie Super Duty M23 Upgraded Ultra Case 4-speed Road or Drag Racing Rock-Crusher. SALE EXTENDED!!! Thomas N. on Muncie Super Duty M23 Upgraded Ultra Case 4 …
We have the best prices on Muncie 4 speed parts, ... This design creates the distinctive low-RPM rattle and high-RPM whine the Rock Crusher is known for. Gear ratios are the same as the close-ratio M21. The Muncie four-speed was used in a wide range of GM products through the 60s and 70s. However, the Rock Crusher was only equipped in cars that ...
See our selection of M20, M21, M22, and M23 4-Speed Muncie Transmissions for Sale here at RiversideGear. Your trusted source for quality Muncie Manual Transmissions and Parts. Home; About Us; Picture Gallery; ... Riverside Gear 612 Water Eaton Rapids,MI 48827 Toll Free: 877-614-GEAR Local: 517-663-4410. Contact Us.
The Muncie four-speed was produced in two ratios: the wide ratio (M20) and the close-ratio (M21). ... 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. The gear ratio of the Chevy four-speed ...
The Gear Box is the source for Muncie Parts like the new assembled M22 SUPER ROCK CRUSHER 4 speed kit with micro super finish or downshift case support. ... W RATIO (1st-2.559, 2nd-1.752, 3rd-1.366, 4th-1.00)
The Muncie case (3831704) replaced the T10 4-speed in the 1963 Chevrolet Bel Air and Corvette by mid-May of that year. The T10 front bearing size was reduced in diameter in 1963 only. This meant that the transmission's front bearing …
The Muncie 4-speed manual transmission holds a significant place in automotive history, renowned for its robust design and pivotal role in the performance car era. ... Muncie M20 Wide Ratio or M21 Close Ratio Gear Set. New Muncie M20 2.52 Wide Ratio OR M21 2.20 close ratio gear set. M20 gearset also available in Italian . ... The Rock Crusher ...
How to Identify Muncie 4 Speed Transmissions. ... The dead 2.20 first gear ratio which is the same in the M21 is not that good for off the line acceleration. You would need at least a 4.56 rear end gear to compensate for the dead first …
You have a choice of a original rebuilt GM Muncie M20, M21 or M22 Rock Crusher. ... Type in your Rear Gear Ratio. Rear Gear Ratio*: Type in your Tire Height. Tire Height*: Qty: ... NEW, Complete 67 - 68 Camaro Muncie 4 Speed Conversion Kit now available! This kit will get you basically everything needed to convert a automatic 1967 - 1968 Camaro ...
Using GM's existing Muncie-built SM318 three-speed manual found in Chevrolet's passenger cars, Duntov developed a Corvette-specific variant containing 2.20:1 First, 1.32:1 Second, and 1:1 Third ...
On tranny's that have no grooves around the splines deserve a look inside for the gears that are almost straight (very little angle to them compared to other muncies) These are 2.20 1st gear Muncie M-22 trannies. (Also known as the Rock Crusher due to the whining sound these trannies make while upshifting 1st thru 3rd gears due to those ...
Muncie 4 Spd Car M22 "Close Ratio" Gear Kit This M22 Gear kit will have a 1" Countershaft pin, 16 Spline input, Close Ratio 2.20 1st gear. The kit will include the Input shaft (4th gear), Countershaft, 1st gear, 2nd gear, 3rd gear, and Reverse Idler. Input- 26 Tooth 26 Spline Close Ratio Counter Shaft- R27-22-19-17 Big 1" Pin Close Ratio 1st Gear- 36 Tooth 2nd Gear- 30 …
Identifying The Muncie. Muncie four-speeds were produced in two different ratios: the wide ratio (M20) and the close-ratio (M21). There also was a second, heavy-duty close-ratio version: the "Rock ...
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. ... Available Gear Ratios. Prior to ...
4 Gear Trans Co. Parts and Gears to rebuild GM 4 Speeds ... MUNCIE M22 "ROCK CRUSHER" 4 SPEED GEARS: We stock our own 4GTC Replacement M22 Gears. You can purchase them individually or in complete sets that include the 6 in-case gears (Cluster, Input, 1st, 2nd, 3rd and the Front Reverse Idler). ... Ratios. Our 4GTC Private Label M22 Gears are ...
The M22 Rock Crusher would come later to accommodate the heavy twist of Chevrolet's big-blocks in the mid-1960s. ... Muncie Four-Speed Gear Ratios: M20 Wide-Ratio 1963-'65: First Gear: 2.56:1: Second Gear: …
Muncie Shift Forks (2) Auto Gear - M20 - M21 - M22 - Made In the USA (#112341132049) ... and works flawlessly!!! I could not be happier, packing was fantastic, and arrived in perfect condition. Thanks!!! Muncie M-22 Rock Crusher Four Speed Transmission - RARE Drivers Side Speedo (#1) ... See More Details about "1968 Muncie M22 4 ...
The ratio designation letter didn't appear until around October 1, 1968 for the 1969 model year. 1969 Muncie P9S11 ~ November 11, 1968 - M20. 1969 Muncie P9T04A ~ December 4, 1968 - M20. 1969 Muncie P9A31C ~January …
How to Identify Muncie 4 Speed Transmissions. ... The new Muncies being built today have some better ratios.Today's examples of the new car gear set ups are Mustang GT's with a 3.35 1st gear and 3.08 rear. New Camaros with a 2.68 …
