How do I identify a Muncie M20 transmission? Another way to confirm that the transmission is original to your car is most Muncie four-speed 

guide to muncie m20, m21, andm22four-speed transmissions. Aug 07, · 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 produced from 1963-'74 are easy to identify in both.

A great Super Heavy Duty Rock Crusher M22 for your Camaro, Nova, Chevelle, Corvette or other GM car. Close Ratio = 2.20-1st, 1.64-2nd, 1.28-3rd, 4th direct. Wide Ratio = 2.56-1st, 1.75-2nd, 1.36-3rd, 4th direct or comp M22w 2.56-1st, 1.90-2nd, 1.48-3rd. Built for big HP. Lead time 4-6 weeks. 20% Cancelation Fee on special order.

muncie rock crusher identification,how to identify a m22 rock crusher it still runs. an m-22 'rock crusher' is a muncie four-speed transmission for cars made by general motors in the 1960s. Muncie 4 Speed.M21, M22, Rock Crusher? muncie rock crusher . this is

Muncie also had a second close ratio transmission coded M22 and known as the "rock crusher," which was used behind performance big block engines and in some 

6/13 · In order to correctly identify a Muncie four-speed transmission, several visual clues are needed, and those cues involve the casting numbers on the case, side cover, and tailshaft. Main Case Numbers Casting Number Year Notes 3831704 1963 7/8-inch cluster, small bearing 3839606 1963 – 1964 7/8-inch cluster 3851325 1964 – 1965 7/8-inch cluster

1964 to 1968 Muncie 4-speed transmissions can be identified from later models by the way the transmission arms attach. Early Muncie side covers had a stud and the shift arm attached with a nut on the stud while the 1969 and later model side covers had a hole and the shift arms attached with a bolt.

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. You can identify several unique signs that identify an M-22 "Rock Crusher," even if it does not have a GM hallmark imprinted on its surface.

7/10 · Yes, the casting numbers are the same, but '69 and later Muncie 4 speeds had a suffix letter on the passenger side case ID stamping; A for M20, B for M21 and C for M22. M22 also had a drain plug beginning in '66. M20 and M21 also had a drain plug, but only on (I believe) '70 and later Muncies.

The fact is GM did infact use Rock Crushers in Vettes as early as 65 when ordered with a big block or special performance order package and in 

Hot sale muncie m22 rock crusher ultra show car quality transmission with mirror polish finish muncie m22 aluminum rock crusher transmission fits m20 and m21