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 …
There also was a second, heavy-duty close-ratio version: the "Rock Crusher" (M22) that was offered on some of the high-performance big-block models, starting with the 1965 Corvette.
Finally, a show car transmission worthy of your SHOW CAR OR STREET 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. The M22 has all new …
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. The M22 has all new internal parts. All exterior parts are hand picked, visually inspected, painstakingly …
Also M22 gear sets were of 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".
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Muncie 4-speeds were produced in two different ratios wide-ratio (M-20) and close-ratio (M-21). An extra heavy duty close-ratio version (M-22) was also offered on many of the big-block high-performance models.The choice of transmission was dictated by the engine size and rear-axle ratio. Axle ratios of 3.73 and lower (numerically higher) came with …
Muncie Super Duty M23 Upgraded Ultra Case 4-speed Road or Drag Racing Rock-Crusher. SALE EXTENDED!!!
ALL NEW ULTRA PRO SUPER N24 HEAVY DUTY MUNCIE 4-SPEED FOR PRO STREET, ROAD RACE OR GASSER USE. SPECIAL RIBBED MAIN CASE WITH FRONT AND REAR 1-1/2″ STEEL THRUST …
If you are replacing a 27 spline Muncie M-20 or 21 your existing shifter will swap over. Mystery Muncie First Gear noise eliminated. This is about as close to a factory supplied transmission as you can get.
fourbyfourblazer. 328 posts · Joined 2004. #3 · Oct 28, 2004. The famous "rockcrusher" M22 4 speed had the same gear ratios as the M21 but with a heavy duty gearset. Although the gears are not spur gears ( completely straight ) they still produced a fair amount of gear noise thus the "Rockcrusher" name. How to identify your Muncie 4 …
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..
RACING Muncie Slick Shift Clutch-less Super Duty M23 Upgraded Ultra Case 4-speed Drag Racing Rock-Crusher. SALE EXTENDED!!!
Can someone tell me how much a muncie m22 rock crusher is worth this transmission was produced buy gm in 1966&1967
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.
1969-1974 codes include a suffix letter at the end to aid in identification of transmission ratios. A = 2.52 1st gear wide ratio M20, B=2.20 1st gear close ratio M21, C = 2.20 first gear Rock Crusher M22. One example code would be ( P0E21 A ) which reads: Muncie four speed aluminum for passenger car, 1970, May, 21st, ratio M20.
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In 1965, GM introduced an even more robust version of the Muncie transmission, known as the M22 or "Rock Crusher." This transmission, with its distinctive whine, became synonymous with high-performance cars of the era. The M22 featured straighter cut gears, providing a more aggressive gear mesh for increased strength and durability.
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.
In 1965, GM introduced an even more robust version of the Muncie transmission, known as the M22 or "Rock Crusher." This transmission, with its distinctive whine, became synonymous with high-performance cars of the era.
A16 Mainshaft 2nd Gear L30-s36T: except M22 3831746 WT297-21 L30-s36T: M22 'Rock Crusher' 3879999 WT297-21A A17 Mainshaft 3rd Gear L27-s36T: except M22 3831747 WT297-11 L27-s36T: M22 'Rock Crusher' 3880845 WT297-11A A18 Mainshaft 3rd/4th Synchronizer Assy synchro rings w/o support shoulder (1963-65) 3887887 3887887 …
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 four-speed.
This bumbed me out since I had previously read that this was an indication that it was a Saginaw not a Muncie. It does have a 7 bolt side cover. Doe this mean it's still an M22 but just manufactured at the Saginaw assembly plant or it's not an M22 "Rock Crusher Transmission". I am just learning !
Then, in 1966, the M22 (HD close ratio) became an RPO (regular production option) transmission. Because the angle at which the gear teeth were cut was less than the angle of teeth in an M20 or M21, this made the gear teeth stronger and less likely to break under extreme loads (such as racing conditions). This also resulted in an …
Find 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!
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 …
If you are replacing a 27 spline Muncie M-20 or 21 your existing shifter will swap over. This is about as close to a factory supplied transmission as you can get. #3851325 or #3885010 1" Case Assembly.
Yes,avoid the penn syncromesh man trans oil,its like water/much thinner visc then 80-90 intended for a munice and it designed for todays man trans & not 40 yr old muncies. I also contacted pennzoil and they verified that fact and also stated it was never intended/designed for use in the older man trans like the muncie.
The Gear Box is the source forMuncie Partslike the new Muncie M22 Rockcrusher Close, Wide and NEW Extra-Wide Ratio Gear Set, Italian or Korean made.
Muncie M22 REBUILD KITS: Quality parts from our inventory are assembled into kits for rebuilding M22 4 Speeds from 1965 to 1974. Kits are priced at $165.00 freight paid in US only. Rebuild Kit includes the following items: Gasket Set; Shift Shaft Seals; Rear Tail Housing Seal and Bushing for both the 27 and 32 Spline Main Shafts; Syncronizer ...
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.
