This hydraulic bearing kit will fit most Chevrolet, BOP, and GMC manual 3- and 4-speed transmissions, such as the Muncie family of 4-speeds, Borg Warner T10 and Super T10 4-speeds, Saginaw 3- and 4-speeds, and even the GM-spec Tremec TKO-500 and 600 5-speeds when using a stock-style 10-1/2- or 11-inch diaphragm clutch.

The most well known Muncie transmissions are the M20(wide ratio), M21(close ratio), and the M22(rock crusher). Although not mentioned much, there was also an M23 transmission that was used, beginning in 1970. The M23 is recognized by a 26-spline(fine) input shaft and a large output shaft that requires a T-400 driveshaft yoke.

See all 16 photos. The First, Second, and Third speed gears in the N-series M23 are produced using SAE 8620-equivalent steel. A standard M23 feature is a rollerized First gear. The roller bearing ...

This page is dedicated to MUNCIE 4 Speed parts, gears and Main Cases for production from 1963 to 1974. There are six generations of Muncie 4 Speeds. Email us at …

The 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 …

1971 - 1973 Camaro 4 Speed Muncie Transmission Conversion Kit, Choice of M20 or M21 : Alternative Views: Our Price: $ PART NUMBER: TRA-626. Choose Your Year ... 1971 - 1973 Camaro Complete Muncie Four Speed Conversion Kit Stop wasting time and money trying to piece together a 4-Spd conversion kit. Get it all at one low price with …

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 transmission placed in any car was usually determined by the engine size and rearend …

Re: Muncie M20 vs M21? (73 LS-4) [QUOTE]They were installed in cars with different differential gear ratios. 3:70 and numerically higher were given the M-21, 3:55 and lower were given the M-20. The lower first gear in the M …

Multiply 4.5 times the 100 pounds of applied pressure and you get 450 pounds instead of 600 pound. That half inch cost you 25 percent of your clutching power. The same thing applies when you shorten the upper measurement. 1300 Series Hydraulic Clutch Conversion Pedal Effort 20% Less than Stock Mechanical or Cable Linkage.

Nova Parts. Nova Parts > Nova Transmission & Clutch. Complete original GM Muncie transmission rebuilt and guaranteed for 1 year. Correct fit for all 1969 - 1973 model Chevelles and Novas. This one will have the holes …

By the time the Muncie was in its final phase of production (1971-1974) it also gained a 32 spline output shaft in place of the original 27 spline unit. Wide, Close, or Rock Crusher Initially there were two specific Muncie transmissions available: the M20 wide-ratio (2.56:1 first gear) and the M21 close-ratio (2.20:1 first gear).

Our Price: $79.99. (10) Add To Cart. Muncie 4 Speed Transmission Master Rebuild Kit - Max Load, BK116WS-MASTER. Master Rebuild Kit. Muncie 4 Speed Transmission M20, M21 & M22 with 1" counter shaft bore. High Performance Forged Synchronizer Rings made by Synchroking! 1-BK116WS - Master Rebuild Kit - Bearing, Seals, Gaskets with …

You can have the new efficient engine and keep the look and feel of your stock GM Manual 4-speed transmission such as the Saginaw or Muncie "Rock Crusher" that you love. Considering you already have a 10 spline 4-speed transmission, there are only a few items you will need: BBC Bellhousing, Clutch, LS Flywheel, Pilot bearing, and …

Clearance Discounted Items! Product price is not filled in. This product cannot be purchased. This a BRAND NEW SUPERCASE M22 4-Speed Muncie Rockcrusher Style Transmission. Each new Auto Gear …

Share this product. STRONGEST Direct Replacement M22 With NEW Muncie AUTO GEAR Upgraded Ultra CASE With The Strongest M22w …

Only one pair of hands build your special Muncie 4 speed so it is done right the first time to your specs. We are in business to serve you. Complete automatic to muncie 4-speed conversion swap kits for GM cars …

Michael Coons on NEW Auto Gear Upgraded Ultra Case Muncie HD M22 4-Speed Rock-Crusher Street/Strip. Camaro, Corvette, Chevelle, Nova. FALL SALE!!! ... GM 1963 to 1974 Automatic to Muncie 4-Speed Transmission Complete Conversion Swap Kit. FALL SALE!!! Rated 5.00 out of 5 $ $ Add to cart. Sale! Super Pro Road/Drag Race Muncie …

Muncie Close Ratio - M-22 Rock Crusher Four Speed Transmission - ALL NEW GEARS. $2,695.00. + $100.00 shipping. Check the item description to confirm this fits your vehicle. Hover to zoom.

Made in Muncie, IN thus the nickname "Muncie" 4-speed, or "Rock crusher" (M-21 and M-22's). Corvette started with the T-10's in '57. The Olds T-10 transmissions that I have seen/owned have a cast iron …

Step 5. Check whether there are any rings around the shaft splines. An M-22 "Rock Crusher" has no rings, so if you see rings in your transmission, it means it is not an M-22 "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 ...

The Gear Box is your online store for Muncie Parts including complete DIY Super Muncie overhaul kits, italian gear sets, roller bearing clusters, and heavy duty shift plates ... NEW Muncie M22 SUPER ROCK CRUSHER 4 speed $2899.00. No Price ... Everything is included to reseal a leaking transmission. $20.00 . Muncie Gasket Set M20 M21 M22 …

NEW, Complete 69 Camaro Muncie 4 Speed Conversion Kit now available! This kit will get you everything needed to convert a automatic 1969 Camaro into a four speed machine! ... Choose Muncie Transmission*: M20 M21 M22 ROCK CRUSHER [Add $999.95] Type in your Rear Gear Ratio. Rear Gear Ratio*: Type in your Tire Height. Tire Height*: Qty ...

4 Gear Trans Co. Parts and Gears to rebuild GM 4 Speeds . ... Quality parts from our inventory are assembled into kits for rebuilding Muncie 4 Speeds. These kits are available for immediate shipment world wide. ... MUNCIE M22 "ROCK CRUSHER" 4 SPEED GEARS: We stock our own 4GTC Replacement M22 Gears. You can purchase them individually …

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 …

Garry Brown on Super Pro Road/Drag Race Muncie Upgraded Ultra Case M22 Rock-Crusher. FALL SALE; Michael wilhelm on Auto Gear Upgraded Ultra Case M22Z Rock Crusher 4-speed. Perfect Performance with 2.73 to 3.42 Rear End Gears. ... GM 1963 to 1974 Automatic to Muncie 4-Speed Transmission Complete Conversion Swap Kit. …

4 Gear Trans Co. Muncie M22 "Rock Crusher 4 SPEEDS FROM 1965 TO 1974: This page is devoted to OEM Complete units; New aftermarket units and OEM parts and NOS parts. We have rebuild kits in stock and ready …

Code: New Muncie M22 2.20 close ratio or 2.52 wide ratio Rockcrusher gear set is availabe with either a 10 or 26 spline input. Close ratio 26 spline gear sets available in Italian or Korean made. You must select whether you need a wide or close ratio & which input spline count, 10 or 26. Fits all Muncie applications with 1" countershaft pin ...

GM Muncie SM420 Transmission. The SM420 is an impressive, heavy-duty truck transmission designed for and used in ½, 3/4, 1 and 2 ton trucks. The SM420 was made by General Motors from 1947 to 1967. Military specification versions were made through the early 1980s. The SM420 is found in GM trucks, busses, heavy equipment and various …

Serial numbers for Muncie 4-speeds always begin with the letter "P," which stands for Muncie Plant (not "passenger car.") "M" and "N" were used to identify 3-speed Muncies; "O" identifies the Saginaw 3-speed with overdrive. Serial numbers from 1963 to 1966 included only the month and day. For example, P0101 indicates January 1.

The 1965 M22 maintained the 10-spline input and 27-spline output as all other Muncie transmissions from that model year.The 1965 M22 also had the drain plug boss drilled and tapped for a magnetic drain plug. This was not done on the M20 or M21 transmissions. Driver's side of restored 1965 M22 transmission.