Muncie 4 Speed Transmission Diagram

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 heavy duty close ratio manual transmission. Chevrolet muncie transmission parts m20 m21 m22.

How To Rebuild Muncie 4 Speed Manual Transmission M20 M21 M22 Rock

Sm465 mainshaft 4x4 10 splines.

Muncie 4 speed transmission diagram. 1963 only small 6207nr front bearing pat. Muncie 4 speed transmission partsgearsbearing kitssynchro rings and more. General motors muncie four speed 10 1 01 4 c13 c7 c8 c9 c10 c11 c12 c5 c4 c5 c4 c5 c3 c2 c3 c5 c4 c5 c4 c5 c1 c6 auto gear.

This is the muncie 4 speed transmission in an exploded view detailing the location of each part and its description. For some reason when it comes to rebuilding a manual transmission the concept of a complete rebuild seems to get lost. All muncie transmission cases are made of aluminum and the identifying casting numbers are prominently stamped in the passenger side of the transmission case.

1964 74 3849938 3849938. Other examples were the. Pending 78 bore.

This is the muncie 4 speed transmission in an exploded view detailing the location of each part and its description. The muncie 4 speedwas first designed in 1963and lasted until 1974. The muncie 4 speed transmission was used with many different gm models and engine combinations from 1963 1974.

The basic design and operation theory of the gearbox changed little during that time though several design upgrades and modifications were made during the total production run. There are 2 basic ratiosclose and wide. Right hand as req.

1964 regular bearing pat. 4 1964 74 186678 186678 lockplate. General motors muncie 4 speed manual transmission assemblies gears parts applications.

To order call toll free at 1 800 405 4226. Chevy truck 4 speed sm465 muncie parts. Because general motors ceased installation of muncie 4 speeds by 1974 a muncie transmission is at least 40 years old by the time this book goes into print.

Price list and diagram below. Muncie 4 speed casting numbers. Muncie sm465 4 speed transmission parts chevrolet.

General motors muncie 4 speed manual transmission assemblies gears parts service parts and new transmissions. How to rebuild a muncie four speed transmission rock the rock crusher giving a worn out muncie four speed transmission a quick rebuild with parts from summit racing. Any variation of that gear will have a letter after the 12.

38 16 x 1 hhcs req. Sm465 updated 3rd gear and 3 4 slider kit. So 297 12 297 12a 297 12b.

Steve baur oct 7 2014. Transmission became a numbered series. The number 297 12 is a muncie 1st speed gear.

The muncie series was 297.

Corvette 1968 Muncie 4 Speed Shifter Major Rebuild Kit