The M22 transmission has a 20 degree helix angle on the gear set as opposed to a 45 degree angle found on the M20 and M21 and were made with 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 was born
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-performance engines and in Corvettes the M22 is a highly sought-after performance transmission
Decoding Chevrolet VIN trim tags cowl tags engine engine block casting numbers cylinder head casting numbers intake manifold casting numbers transmission interior codes and How to Identify a M22 Rock Crusher It Still Runs How to Identify a M22 Rock Crusher by Janos Gal An M-22 Rock Crusher is a Muncie four-speed transmission
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Sep 15 2010· 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
The M22 transmission has a 20 degree helix angle on the gear set as opposed to a 45 degree angle found on the M20 and M21 and were made with 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 was born
Transmission Production Code Locations 3-Speed - 1968 and 1969 Stamping located on the machined surface on the left side of the case just below and rear of cover Muncie 4-Speed - 1968 through mid 1974 Stamped vertically on the right side of the case at lower rear just ahead of the transmission extension Warner 4-Speed - Mid 1974 through 1981 Stamped at the left side on the top rear of
rock crusher transmission codes vrienden-bordet be Information on transmission codes and VIN stamps is located on the reason for the popular nickname for this transmission the Rockcrusher Get Price Chevrolet Chevy Manual Transmission Identification and Decoding
muncie 4 speed transmission repairs rebuilds and parts m20 m21 m22 rockcrusher gearboxes We rebuild and repair Muncie and Saginaw 4 speed gearboxes We also supply new and used spares
Jul 05 2016· The Corvette was originally equipped with a Muncie four-speed but the transmission was missing when we bought the car second heavy-duty close-ratio version the Rock Crusher…
identify rock crusher four speed trans - ngena-ds co za identify rock crusher four speed trans germanhouseorg identify rock crusher four speed trans 1969 Chevrolet Camaro COPO 427 Yenko car review Top Speed May 17 2012 Connected to the engine s flywheel is a Muncie M21 rock crusher fourspeed transmission which SERVICE ONLINE GET PRICE
Oct 01 2008· Difference between M21 and M22 Discussion in Transmission Driveline Topics started by jbritt There should also be a code stamped on the outside of the tranny that indicates which one it originally was I don t know how many people I ve had tell me Oh ya this thing has a Rock Crusher colloquial term for M22 in it I ve only heard
Aug 03 2018· The M22 Rock Crusher would come later to accommodate the heavy twist of Chevrolet s big-blocks in the mid-1960s The M20 and M21 transmissions …
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 If you have the incorrect transmission your car may not function properly You can identify several unique signs that …
Sep 03 2015· A video with better audio of the nostalgic sound of a Muncie M22 Rock Crusher transmission at work in a 1966 Chevrolet Chevelle
Rock Crusher Transmission Codes machinetoolindia muncie transmission info Grumpys PerformanceThe serial number is a date code the transmission was built for atrain and less heat but created more noise thus the Read More rock crusher transmission codes ieia Muncie M22 4 Speed Rock Crusher Gear Whine - YouTube
Automatic transmissions Early models The GM Hydra-Matic was a success and installed in the majority of GM models by 1950 Through the 1950s all makers were working on their own automatic transmission with four more developed inside GM alone
Auction Lot F231 Dallas TX 2019 Matching numbers 350 300 HP engine with GM over-the-counter period correct aluminum intake Muncie M22 Rock Crusher 4-speed transmission date code P9A21C Very rare BV 12 bolt rear end with factory 4 10 gears Eaton Positraction unit Azure Turquoise Bucket seats with console Tachometer and gauges 14x7 SS wheels with Redline tires
Feb 21 2010· 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
The 1965 Chevrolet M22 Rockcrusher Transmission The 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 Read More
1969 camaro z28 matching s dz-code 302 m22 rock crusher 4-speed 1970 chevrolet chevelle ls6 454 muncie rock crusher transmission cowl induction 1969 camaro z28 original dz302 m22 rock crusher 12 bolt posi real z28 1969 camaro rs ss396 matching 375hp 396 m22 rock crusher …
Apr 17 2015· The 1971 transmissions were the same as from previous year except that the M-21 close-ratio 4-speed transmission was replaced with a stronger version of the Muncie close-ratio gearbox the famous M-22 Rock Crusher 4-speed It was the strongest 4-speed manual ever installed in a GTO This lineup remained unchanged in 1972
Serial numbers for Muncie 4 speeds always begin with the letter P P stands for Muncie Plant Not for passenger car as some self proclaimed specialists may think The letter M was used to ID the Muncie plant for the Muncie 3 speed so P was the next logical letter The …
Jul 29 2016· The first thing we are going to cover in this installment is transmission Build Date Codes This code will be stamped onto the main case This number is much different than the casting date codes
The M22 transmission has a 20 degree helix angle on the gear set as opposed to a 45 degree angle found on the M20 and M21 and were made with 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 was born
An Automatic transmission was optional on any Camaro from 1970 to 1981 The transmission usage was dependant upon which engine was being ordered This page will describe general transmission information You can find specific transmission usage under the Power Teams section in the yearly Camaro information
Locate the transmission code According to Teufert net s GM turbo 350 transmission page the code for 1969 to 1972 transmissions is on the passenger side accumulator cover The accumulator cover is a small round dome-shaped cap located in the middle of the transmission
Used Muncie M-22 - Rock Crusher Four Speed Trans For sale is a Factory Replica of the Close Ratio professionally rebuilt and guaranteed all new gears and internal parts nice muscle car transmission muncie 4 speed manual transmission with hurst competition plus super shifter
The extension housing code is usually within a few inches of the casting number also on the passenger side Muncie casting date codes are very different from other transmission manufacturers The code consists of two circles both 1 2-inch in diameter and divided in half One circle is called the date marker the other the status marker
M-22 Rock Crusher Identification The M-22 close-ratio transmission is easily identified internally from the M-20 and M-21 versions by the angle of the gear teeth The M-22 was only produced in a close-ratio version so it will not appear on models with high rear-axle ratios 3 55 or lower numerically unless someone has changed it