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)

M22 Muncies Called Rock Crushers; Blue Basalt Rock Bearing Strength; Difference Between Cement And Rock Dust; Yds50 Mobile Rock Crusher; Heavy Duty Rock Crusher; ... 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.

The M-22 was the "rock crusher". It had the same gear ratios as the M-21. The VIN is stamped on the tranny. The location may have varied. I haven't looked at mine in a while, so maybe someone else could be more specific. ... All 3 Muncies were available in the Z/28 for 1969. I have factory documentation for 38 cars. 8 have M20, 25 M21, 5 M22 ...

i have an m22 rock crusher, i'd like to change the oil, but im not sure what type of oil ... Amsoil makes a gear oil that mentions that its good for Muncies I think it's 80-90 wt. Its more important to check the GRADE of the oil. 72 ss 454 "W" code,w/cowl induction (how many left?)

Many people have guesses about deciphering M-22s. Like grooves in the input shaft and numbers and etc etc... The only way to tell is to open the case and measure the gear angle from the shaft centerline. M-20 and M-21 have 45 degree gears and M-22 have 22.5 degree gears. Fresh M-22s are going for $1300-$1600

The FACTORY M-22s were ONLY a close ratio version (2.20:1 first gear). The aftermarket M-22s are available as either a close ratio or wide ratio (referred to as an M-22W with a 2.56:1 first gear). If your car has a 3.55 or higher rear gear, you would be happier with the M-22W. Again, contact Wally.

What Kind Of Muncies? ... I've seen people talk about Muncie M-20's, M-21's, M-22's, M-24's and Stone Crushers. I know they were all four speeds, but what made them different, and what were their specific applications? I'd imagine the M-20's were a lighter duty, probably for a 307's, 350's and low horsepower 396's and the M-22 and M-24 were for ...

I currently have an M22 Rock crusher in my '56 Chevy pickup, and have another M22 that was rebuilt about 6 years ago by my father but never used. I also have what I believe …

This is a 661 case which is the last of the 3 style cases made dated Feb. 1, 1971 and a ratio of C for M-22 2:20 ratio Rock crusher, however these gears are not Rock crusher and must have been changed, they appear to be M-21 gears 2:20 ratio The tailhousing is a 774 which is the large housing that takes the 400 turbo yoke Muncieman

These special units evolved into what is called the M22 today. According to research by Alan Colvin (author of the Chev­rolet by the Numbers books), 57 M22 units were actually built for 1965 production. ... (M20, M21, and M22) came with the 26/32-spline configuration. Even to this day there is a misconception that all "fine spline" Muncies ...

C3 Tech/Performance - ROCK CRUSHER TRANY? - back in the early 70's i had a 68 roadster (vert) and it seems like i remember the nickname rock crusher being used to reffer to the 4 speed trany...the Muncie i believe... can anybody straighten me out on this one? am i recalling correctly or am i dreaming? LOG IN; REGISTER; Forums.

The M22 Rock Crusher would come later to accommodate the heavy twist of Chevrolet's big-blocks in the mid-1960s. ... What makes the small-bore and large-bore case Muncies different is the input ...

Frequently, the M22 is nicknamed ROCKCRUSHER because of the distinctive whine in 1-2-3 gears. This whine occurs because of the lesser angle of the gear teeth …

M-22 "rock crusher" The name stuck, and like many other nicknames that have occurred in the past, the term Rock Crusher has just stuck, and that's why the M22 is frequently called a rock crusher ----- THUS, ONLY, ONLY, ONLY AND ALL M22 MUNCIES ARE CALLED …

The M22 'Rock Crusher' featured a one-inch countershaft pin bore and shot-peened gears with aggressive helix angles that reduced heat and stress but also increased noise, leading to the nickname as the transmissions rattled their way down the road. The upside to the racket was the ability to hold even big block torque without worrying about ...

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! I didn't even read this on the internet, 70% of the guys at the gas station tells me this when I'm gassing up, they all had that rare 68 chevy with a corvette 327, rock crusher muncie and a 12 bolt posi that they would shift from first to second …

NEW Muncie M22 SUPER ROCK CRUSHER 4 speed $2899.00. No Price Muncie Overhaul Kit. ... 1966-1974 Muncies have a 1 inch cluster shaft. Please scroll down for extras (input nut wrench, ... Muncie 1st gear with 36 teeth fits all M20 & M 21 Muncie transmissions 1964-74. From $82.00 .

GM Muncie transmission rebuilt and guaranteed for 1 year. Correct fit for all 1967 - 1968 model Chevelles and Novas. This one will have the studs coming out from the side where your shifter linkage mounts. This is the Muncie M-22 …

Home / 4 Speed / Muncie Super Duty M23 Upgraded Ultra Case 4-speed Road or Drag Racing Rock-Crusher. January SALE NOW!!! PRICE INCREASE SOON !!! Rated 5.00 out of 5 based on 15 customer ratings ... When you call he answers the phone. I called with many questions about his M23 Super Case including bolting on a Gear Vendors overdrive. Jeff really ...

Rick, I'm not the expert on these here, DZauto is but here it goes. The M22 is the "rockcrusher" tranny. It's a bit more heavy duty than the M21 and much rarer. It's called a rockcrusher due to it straighter cut gears which whine ( and are stronger ). The M21 is a standard Muncie 4 speed. They both have the same ratios beginning with a 2.20 1st.

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New Super Heavy Duty Direct Replacement and Strongest M22's Made With Muncie Auto Gear Upgraded Ultra Case and Strongest M22 Close Ratio or Wide Ratio Gears. 10 OR 26 spline input and large 27 OR 32 spline output shaft. C355 Forged Aluminum Mid-Plate. Super Tail. AG Roller Side Cover. A…

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. ... On 1969-and-newer Muncies, you ...

It is a common misconception that all Muncie transmissions are "Rock Crushers", but it is only the M22 that deserves that name. The M20 and M21 were both release in 1963, but it wasn't until …

The name stuck, and like many other nicknames that have occurred in the past, the term Rock Crusher has just stuck, and that's why the M22 is frequently called a rock crusher ----- THUS, ONLY, ONLY, ONLY AND …

An 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 …

Last M-21 I bought was about 16 years ago and I gave $150 for it. Rock Crushers were going for closer to $400 at that time. Nowadays they are probably a lot higher, especially out where you live. I think the M-22 was a close Ratio tranny, besides being stouter than the M-21. My old man had a Brand New '67 SS Chevelle with the 350 horse 396.

I know the M22 first came out in 1965 and its popularity really picked up around 1968. I have a suspicion that rock crusher may have first been used in a late-1960s auto …

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 ...

How does the Muncie M-22 rock-crusher trans compare to the Borg Warner Super T-10 Power Brute transmission (the ones with a nodular iron case and high nickel gears that were offered as over the counter replacements in the 70's and 80's?? Strength, durability, ease of installation, is it a direct replacement for the Muncies?

"Another change for the M22 was the new low helical-angle cut gear set which increased the inner strength of the transmission dramatically. This gearset was quite noisy and …

The early M20 muncies with the 7/8 pin counter shaft had no rings around the input. They are 10 spline input shafts. 95 % of the time these transmissions get confused with the M22. The only way to be 100 percent positive is to pull the side cover and look at the gears.

That being said i have had muncies with mixed gear sets that made all kinds of crazy sounds..... I even owned one in my personal car that was about as loud as a M22 but it really had a different sound, After you get to know what the M22 sounds like.. ... Thats what puzzels me if I really do have a Rock Crusher. Save Share Reply Quote Like. K. k ...

On the left is the M20 countershaft and 10-spline input shaft. In the middle is the M21 countershaft and input shaft. On the far right is the M22 26-spline input shaft. In the 1970s, virtually all Muncie four-speeds had 26-spline input shafts. 8. The M22 Rock Crusher 26-spline input shaft sports a wider gear for greater torque capacity.

Certainly the M-22 is the stronger of all the Muncies-----and yes, it whines, that is inherent because of the design ot the M-22 teeth. If you want to buy a strong, new tranny that will probably last as long as your needs, the the only way to go is with the Richmond Super T-10 (they bought the B-W design). As mentioned, the ST-10 is an upgraded ...

The M22 Rock Crusher would come later to accommodate the heavy twist of Chevrolet's big-blocks in the mid-1960s. ... What makes the small-bore and large-bore case Muncies different is the input shaft bearing size and first gear, which rode on the mainshaft void of a bushing for 1963. For 1964 and beyond, it rode on a bushing between it and ...

How to Build a Bulletproof Muncie M22 Four-Speed Transmission. The Muncie M22 is known as the Rock Crusher. See how we improve its strength and versatility by adding a Gear Vendors Overdrive.

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