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 …

To do so, it needed an even tougher gearbox than the M21, and while the Grand Sport never made it to Le Mans due to GM politics removing its brands from motorsports competition, the Bowtie brand was able to test the Muncie enough to develop a newer version that eventually hit the streets as the M22. The M22 'Rock Crusher' …

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 ! ... ID - 136370R Vin - 136370R235102. Save Share. C. ... (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 …

Muncie M22 Rock Crusher First Gear. $ 119.00. Add to cart. Category: Transmission Parts. Additional information.

The 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.

NEW Muncie M22 SUPER ROCK CRUSHER 4 speed $2899.00. No Price Muncie Overhaul Kit. Complete overhaul kit for Muncie 4 speed transmissions. ... Muncie M22 1st gear 36 tooth Italian or Korean. 1st gear with 36 teeth for all …

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 gear. ... Top countergear is an M22. Lower gear is an M20. Notice the different helix angles of the gears. Below left is an M22 1st gear. Right is an M20 / M21 ...

Muncie 4-speeds have varying helix angles in the gearsets. Typically, the M20/M21 gearsets have a first-gear helix angle of 26.4 degrees and an input shaft angle of 39 degrees. The reduction in the angle with the M22 is quite substantial. The M22 first gear has an angle of 14.5 degrees and the input shaft is 24.2 degrees.

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). ... Please visit our "Specials" Page for introductory pricing on our "4GTC" M22 Gear Sets. …

10874 posts · Joined 1998. #6 · Apr 24, 2022 (Edited) ORIGINALLY, in the beginning of the Muncie evolution, there was the M20 (wide ratio) and the M21 (close ratio). A VERY, VERY, VERY few Heavy …

The input shafts are interchangeable too, you just choose a 10 or 26 spline input shaft. To help fine tune your driveability with a 4 speed; these three combination examples below have the same 1st gear takeoff feel. The differential gear is your cruising 4th gear and determines your RPM. M22 (2.20:1) - 4.10:1.

The M20 and M21 have the same cut to the gears, the M22 is a straighter cut resulting in a greater strength. Since the M20 and M21 look the same one way to tell them apart (aside from the grooves on the input shaft) is the tooth count on the cluster gear. There are 7 different input shaft possibilities on a Muncie.

M22 first gear is 2.20 (about 22mph at 3k) TKO first gear is 2.87 (about 17mph at 3k) M22 second gear is 1.64 (about 29mph at 3k) ... "It's got an M-22 Rock Crusher". If you swap it for a TKO-600 (The 600 stands for 600 lb-ft of torque capacity) then that claim is gone. I had a M-22 in mine, but it was not original, and at the time I hadn't ...

Even 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 …

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.

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 gear. ... Top countergear is an M22. …

My dad runs a M22 rock crusher in his 66 Vette. The originals were substantially stronger than the M21, but the case was a weak point. M22's are now available with beefed up cases and they are very strong!! ... the deep first gear was similar to having a 4:88 rear gear in first and a 3:23 rear gear in 5th.

eBay Product ID (ePID) 9012940859. Show More. Show Less. ... item 8 Muncie M22 Gear Set 2.20 Ratio Rock Crusher 10 Spline Input Fits M20 M21 4 Speed Muncie M22 Gear Set 2.20 Ratio Rock Crusher 10 Spline Input Fits M20 M21 4 Speed. $569.98. Free shipping. Best Selling in Service & Repair Manuals.

Muncie M22 Rock Crusher Cluster Gear 1″ ... $ 210.00 – $ 242.00 Select options; Muncie M22 Rock Crusher First Gear $ 119.00 Add to cart; Muncie M20 Wide Ratio Third Gear $ 118.00 ... Competition Plus Catalog; Installation Instructions for Hurst Shifters; Muncie Identification; Speedometer Gear Calculator; T10 Indentification; Transmission ...

It tells how to pick out what is what but the main thing to look for in a M-22 is the gear angle. Take off the side cover and look at the angle of the gears. M-20, m-21 will have 45 degrees gears and the m-22 is 22.5 degrees. They used this to reduce friction and in turn gave it a nice greary noise thus the rock crusher. Chris

The TKO600 might be rated at 600 ft. lbs. of torque, but it took the factory putting alittle over 1000 ft. lbs of torque to it to make it break. Along with the overdrive I feel that this makes the Tremec far superior to the Muncie.

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.

Muncie Drive Speedometer Gear 8T 1.18 ID, 1.84 OD, 3708144 Our Price: $22.90 (26) ... Both the wide-ratio M20 and close-ratio M21 debuted in 1963 in the Corvette. The M22 "Rock Crusher" followed four years later. It uses stronger components to handle big-block power. ... the first parts to fail are usually the seals, bushings and bearings.

Its gear surfaces are slightly wider than an GM piece to increase durability. It features a large 32-spline output like GM's final Muncie-built units. The First, Second, and Third speed gears in ...

Many people know about Muncie transmissions and the famous M22 "rock crusher" transmission that has straighter cut gears that allows you to bang the gears …

3162 posts · Joined 1999. #4 · Mar 31, 2023. Grey chevelle said: I have a 1970 m22 close ratio 4 speed from a 1970 ls6 I owned back I the 80s. Here is the info. It has the fine spline front and rear shafts. 10PP229308 stamp on casting.

The M20 was the wide ratio (2.56 1st gear in 63-65) (2.52 in 66-74). The M21 was the close ratio for ALLLLLLLLLLL years, 2.20 1st gear. The M22 was the Heavy Duty close ratio for 66-74---------- A VERY SMALL HANDFUL OF M22s WERE MADE IN 65, AND IT IS BELIEVED THEY WERE ALL INSTALLED BEHIND 425hp 396 ENGINES.

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. ... AG Roller Side Cover. A great Super Heavy Duty Rock Crusher M22 for your Camaro, Nova, Chevelle, Corvette or other GM ...

The original M22 had the same gear ratios as the M21. No more wear and tear on an M22 than any other Muncie. While the gears were not straight cut, they were cut on a straighter angle, hence the noise. ... The 10.52 first gear would be nice with your build. I don't know if the M22W has the straighter cut gears, better check if that is the sound ...

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. This transmission identification code list was issued by the Chevrolet Facilities and ...

Jim Mac. 12469 posts · Joined 2004. #5 · Apr 24, 2022. hopefully he meant that a m22/rock crusher was rarer installed in a car. jim. Jim. 70 chevelle, SS clone 454 4 speed 3.31 12 bolt posi. 71 …

We have complete M22 aftermarket gear sets, both 10 and 26 spline Inputs and either Close (2.20 first gear) or Wide Ratio (2.52 first gear). The Wide Ratio M22 gear set is based on the 2.52 first gear ratio's and is …

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 …

Rebuilt Transmission M22 1966-1974 Rock Crusher MTGM038. Rebuilt Overhaul Bearing Kits M21 & M22 Transmission ... Drive Speedometer Gear (8 T) 1.18″ ID, 1.84″ OD TRS3708144 Drive Speedometer Gear (8 T) 1.41″ ID, 1.84″ OD 3978758. 3 Front Retainer WT297-6. Input Nut GM591150. N.I. ...

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. Just For You.

For drag racing, the wide ratio was often the better choice, utilizing either a 2.56 or 2.52 first-gear ratio. In contrast, close-ratio transmissions (which use a 2.20:1 first-gearing) reduce the ...

The M22 Rock Crusher 26-spline input shaft sports a wider gear for greater torque capacity. Just because you've found a 26-spline input shaft does not mean you've found an M22 input shaft, which is …

M22 ROCK CRUSHER [Add $999.95] Type in your Rear Gear Ratio. Rear Gear Ratio*: Type in your Tire Height. Tire Height*: ... M21 or M22 Rock Crusher transmission. With this new kit you also get all the hardware needed to get the job done right the first time. Correct bolts will include head markings like original.

Muncie Identification; Speedometer Gear Calculator; T10 Indentification; Transmission ID