Therefore, the muncie patent is basically a design for the layout of a 4 speed transmission. The main case date code is usually found on the passenger side. How to connect lsx engine to older gm 4speed manual. The m22 was produced in 1973 and 1974 for other gm divisions. Information available 4 speed conversions provides pictures, descriptions and applications for oem general motors vehicles. In this 2 part video, paul cangialosi restores a muncie 4 speed and swaps out an old m21 muncie gearset for a new m22w one. Milder gm cars used saginaw or borgwarner fourspeeds. The strongest of the muncie based 4 speeds, the auto gear m23 is your answer for strength in those higher hp and torque applications where an m2021 or even m22 just wont do. We have mentioned several transmission swaps over the last 6 months, but another one definitely worth mentioning involves using the muncie 4speed. I took the time to research the patent number that is cast into most muncie main cases. Very strong, updated design in first gear area makes these very desirable for the big engine crowd.
This layout is a 4 speed transmission with four forward gear ratios in. Introduction to rebuilding gmmuncie 4speed transmissions. M22, and m23 4speed muncie transmissions for sale here at riversidegear. Muncie transmissions are known for both highperformance. This meant that the transmissions front bearing retainer and register bore of the bellhousing were also smaller in diameter. Muncie m20 4 speed transmission parts, rebuild and. New muncie m22w auto gear wide ratio 4 speed transmission. Manual transmission dimensions summit racing equipment. The muncie 4 speed transmission from general motors is one of the most popular and widely used transmissions in the racing and rodding industry.
A gl 4 lubricant provides adequate protection for most manual transmissions, unless a unique design. Aug 08, 2018 retaining the 4 speed with your ls swap is a perfect blend of old and new. Early muncie 4speed identification ecklers automotive. The muncie sm465 is a heavyduty, fourspeed manual transmission built by general motors for use in light and medium duty trucks from 1968 to 1991. For salesm 420 manual transmission, 4speed w granny low with correct gm bellhousing. I purchased a 1967 chevrolet c20 project and this came with t. Muncie general motors 4 speed longitudinal transmissions were developed in three distinct models the muncie m20 wide ratio manual transmission, the muncie m21 close ratio manual transmission and the muncie m22 heavyduty close ratio manual transmission.
Muncie m20 4 speed transmission parts, rebuild and overhaul. This is a heavy duty unit with reinforcing side ribs in the case to improve strength and longevity. Muncie m20 4 speed rwd manual transmission parts these quality m20 manual transmission parts, rebuild and overhaul kits are designed to be top of the line overhaul kits. We have include information on how to identify individual transmissions, application information, model year, detailed kit and part availability by transmission type. General motors 19631974 general motors high performance auto gear equipment 530 state fair boulevard, syracuse, new york 204 800 6343001, inside new york. Jeff collins on new auto gear super case muncie m22 4 speed rockcrusher streetstrip. Guide to muncie m20, m21, and m22 fourspeed transmissions. Jul 29, 2016 most of the muncie fourspeed transmissions will have a casting date code on the main case, extension housings, and side cover. Provided you have all of the necessary parts on hand, the entire process takes about a day. How to connect lsx engine to older gm 4speed manual transmission. This is a beefy version of the original rock crusher transmission.
Your trusted source for quality muncie manual transmissions and parts. Gms goal with the muncie four speed was to produce a better shift. The muncie was the top highperformance manual transmission general motors offered in its muscle cars of the 1960s and early 1970s. Aug 07, 2018 it was a matter of economics when chevrolet needed a fourspeed manual transmission for the corvette in the mid1950s. There is a small section of video that has no sound due to the artist no longer honor. With the quality of used muncie transmissions getting worse in the last 10 years, the idea of making new improved muncie parts was becoming a reality. To save costs and development time, chevrolet used the t10 as a base. In the 1960s and 1970s, both factories produced four speed transmissions for some otherwise identical cars. The t10 front bearing size was reduced in diameter in 1963 only. Muncie 21 4 speed for sale in murrieta, ca racingjunk. New process gear np435 4speed longitudinal transmission used in a select handful of 6772 gm pickups. Other gm automatic transmissions sharing the same 27spline output are the turbo 375, 2004r and 700r4. This includes the clutch, the common speed gears, and the connection.
Some applications beyond oneton pickup trucks came with larger input shafts. According to cangialosi, gm took the basic t10 design and beefed it up to. This layout is a 4speed transmission with four forward gear ratios in. Complete units were able to be purchased from gm until the late 1970s. Therefore, the muncie patent is basically a design for the layout of a 4speed transmission. The synchro rings have 35 teeth and the unit has a 4 step cluster gear. Gasser king on gasser muncie super duty m23 4 speed. Aug 03, 2018 it was a matter of economics when chevrolet needed a fourspeed manual transmission for the corvette in the mid1950s.
Having issues diagnosing problems with your sm465 gm 4 speed manual transmission we can help. Paul cangialosi has been involved in the manual transmission parts and rebuilding business since. It replaced the t10 in general motors cars, starting in february of 1963. How to identify chevy 4 speed transmissions it still runs. The primary four speed manual transmissions used by chevrolet are the saginaw, muncie and borg warner models, with saginaw and muncie units being specifically made for chevrolet. The muncie 4 speeds m20, m21, and m22 are some of the most popular manual transmissions ever made and continue to be incredibly popular. There is a small section of video that has no sound due to the artist. Muncie sm420 4speed manual used up to 1967, very similar to sm 465 except small changes to gear ratios and location of reverse. They are a very popular transmission with chevrolet enthusiasts, and are easily adaptable for a wide range of gm and other nongm vehicles. Tony vescio on gm 1963 to 1974 automatic to muncie 4 speed complete conversion swap kit. Sm465 4 speed manual transmissions midwest transmission. The muncie 4speeds m20, m21, and m22 are some of the most popular manual transmissions ever made and continue to be incredibly popular.
When converting from an automatic transmission to a muncie four speed, gm vehicles with a turbo 350 or powerglide automatic can use an early 10spline input shaft muncie without having to modify the original driveshaft. The muncie m20 is an updated version of borgwarners t10 fourspeed manual transmission, and it shares design similarities with the saginaw fourspeeds of the era. Muncie and saginaw were two production facilities for general motors vehicles for many years. The muncie sm465 is a heavyduty, four speed manual transmission built by general motors for use in light and medium duty trucks from 1968 to 1991. Corvettes saw installation by may through june of 1963. May, 2003 gm 4 speed overdrive transmission dimensions ford 4 speed overdrive transmission dimensions chrysler 3 speed transmission dimensions. M23 4 speed auto gear super strong custom built to your needs. This a brand new supercase m22 4 speed muncie rockcrusher style transmission. Muncie 4 speed transmission repair fixing a poor rebuild. The extreme pressure requirements of spur gears and helical gears found in transmissions are not nearly as great as found in rearwheel drive differentials. Saginaw and borg warner models are normally used on general purpose applications. A muncie transmission differs from a saginaw transmission in that its reverse lever is in the tail.
The later 27spline output is the same as was used on the automatic transmissions. Muncie 4speed manual transmission auto gear equipment. Muncie m22 4 speed rock crusher gear whine youtube. Below you will find a detailed parts list for the sm465 manual transmission that includes complete rebuilt transmissions, bearing rebuild kits with and without synchro rings, seals, small parts kits, bushings, individual bearings, hub slider, synchro rings, forks, gears and shafts. Hard shifting and gear noise existed after what seemed like a good rebuild. To understand the evolution of the muncie 4 speed you have to look at a series of engineering platforms that led to the final design of this transmission. Competition plus 4 5 6speed chevy manual transmission shifter lever kit manual. How to connect an original gm 4 speed manual transmission muncie m20m21m22, borg warner super t10 to your swapped in lsx series engine. It was a matter of economics when chevrolet needed a fourspeed manual transmission for the corvette in the mid1950s. The sm465 can be found in chevrolet and gmc fullsize trucks, blazers, suburbans, among other models. From short tracks to drag strips and car shows to museums, the muncie transmission can be found in a variety of vehicles. The auto gear thrust button main case, new super strong yet lightweight auto gear aluminum mid plate, super strong. Jun, 2017 muncie manuals the muncie fourspeed transmission was heralded by many as an indestructible four speed used by general motors, and found its way into many different car models, behind various engine combinations between 1963 and 1974.
The guys at anaheim gear tell us there are seven total muncie input. Apr 17, 2015 when the gto arrived in 1964, three manual transmissions were available. A video with better audio of the nostalgic sound of a muncie m22 rock crusher transmission at work in a 1966 chevrolet chevelle. The muncie case 3831704 replaced the t10 4speed in the 1963 chevrolet bel air and corvette by midmay of that year. That connection is made through the parts found within a transmission. Paul cangialosi shares some of his muncie 4 speed rebuild upgrade tips. M21 m22 4 speed muncie manual transmission midwest. Muncie four speed manual transmissions came in many gm models of the 60s and 70s. Each new auto gear transmission is built from genuine auto gear parts, the highest quality available. General motors stopped installing muncie 4 speeds in 1974. Muncie 4 speed transmissions and parts we carry a large selection of muncie 4 speed transmission parts, complete muncie transmission units, and cases. To understand the evolution of the muncie 4speed you have to look at a series of engineering platforms that led to the final design of this transmission. It is a good idea to understand the basics of your muncie 4 speed before you start the only adjustment possible with this type of transmission is a linkage. M22, and m23 4 speed muncie transmissions for sale here at.
We also offer transmission rebuild service and case repair. Muncie m22 4 speed rock crusher transmission fresh muncie m22 rock crusher 4 speed transmission 2. Muncie sm420 4speed manual transmission chevy 19471972 w. Mar 02, 2015 the muncie 4 speed was gms answer to the t10, and by mid 1962 full working prototypes had been built. If you dont see what you need, call us tollfree at 18776144327. Car enthusiasts care a great deal about the specifics of their particular classic vehicle, so knowing whether their. Why should you purchase a new muncie 4 speed from us. B, 67, linkage kit 4 speed shifter rods, muncie transmission, b, 63. Brand new supercase m22 4speed muncie rockcrusher style.
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