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 

6/22 · At a quick glance the Muncie can be easily distinguished from the Saginaw since the reverse lever on the Muncie is mounted on the extension housing of the transmission,

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.

This means the Muncie was assembled December 13, 19 67 for the 1968 model year. The VIN number will usually be a low number. 1969 to 1974 Muncies got a ratio 

The M22 'Rock Crusher' featured a one-inch countershaft pin bore and shot-peened gears with aggressive helix angles that reduced heat and stress 

GM Muncie transmission rebuilt and guaranteed for 1 year. Correct fit for all 1967 - 1968 model Chevelles and Novas. This one will have the studs coming out 

Muncie Rock Crusher Identification. Muncie identification the h.A.M.B.Feb 21, although some claim that the m23 is a rock crusher, it is indicated that this box was assembled in both wide and close ratio components and also with straight cut gears common to the rock crusher m22 transmission.

how to id a muncie rock crusher. Jul 12, · Muncie Rock Crusher Identification. Muncie Rock Crusher Identification. Muncie identification the h.A.M.B.Feb 21, although some claim that the m23 is a rock crusher, it is indicated that this box was assembled in both wide and close ratio components and also with straight cut gears common to the rock crusher m22 transmission.

Check the numbers on a Muncie. They will tell you if it is a M20, M21, or M22. Also, it will have a partial VIN on it that will identify whether it came from a Chevy, Pontiac, or other GM. Also, often, that partial VIN will tell you the model of the car by looking at the assembly plant code. Nov 22, 6 Camaro-Chevelle Veteran Member

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 

8/26 · Muncie Identification The H.A.M.B. Feb 21, Although some claim that the M23 is a rock crusher, it is indicated that this box was assembled in both wide and close ratio

GM Muncie 4 M22 Rock Crusher Identification The M22 closeratio transmission is easily identified internally from the M20 and M21 versions by the angle of the gear teeth The M22 was

There is another way to quickly identify Muncie transmissions. All Muncie transmissions have a ring groove on the input shaft and counter gear.

We are in business to serve you. Complete automatic to muncie 4-speed conversion swap kits for GM cars available. GASSER MUNCIE SUPER DUTY ULTRA CASE M23 4-Speed. SALE ENDS 9/30/22. Rated 5.00 out of 5. $ 3,549.00 $ 3,249.00 Add to cart. Muncie Super Duty M23 Upgraded Ultra Case 4-speed Road or Drag Racing Rock-Crusher.

Muncie M22 Rock Crusher Identification List Of Gm Transmissions Wikipedia General Motors is an innovator of automatic transmissions introducing the HydraMatic 

if it's (pin) is a 'lil bit smaller thanthe size of a quarter (.25 cent piece), it's an early Muncie. (also has a smaller output yoke). If it 

9/3 · A video with better audio of the nostalgic sound of a Muncie M22 (Rock Crusher) transmission at work in a 1966 Chevrolet Chevelle.

Steps to Identifying a Four-Speed Manual Transmission The M22 or so-called Rock Crusher usually partnered up with big-block engines.

Step 1. Check the casting number, the production year and the gear ratios on the aluminum serial number plate attached to the transmission box. Every GM Rock 

Muncie rock crusher identification. the 2561 ratio is commonly referred to as the m20 muncie also had a second closeratio transmission designated m22 and often referred to as the rockcrusher which was used behind the highestperformance engines and in corvettes the m22 is a highly soughtafter performance transmission. M22 Rock Crusher Identification

Chevy transmissions muncie m22 rock crusher 4 speeds were made from 1965 to 1974 the most popular transmission of its time for high performance cars built for chevrolet and all

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

6/19 · 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.” How can you tell if you have a M22 Muncie?

The 1964-65 Muncie transmission main case casting number was #3851325. It was designed for the use of the 7/8″ countergear pin inside the transmission assembly. To manufacture the M22, the #3851325 case had to be drilled out to 1″ to accept the special countershaft pin. A new maincase was not to be released until the start of the 1966 model year.

One more way to identify the Muncie is via stamped codes in the case, which indicate when the transmission was built at Muncie (see How To Read 

muncie m22 rock crusher 4 speed transmission. Further Muncie identification 3 Muncie 4 speeds were offered The M20 wide ratio the M21 close ratio and the Extra heavy duty close ratio M22 also known as the Rock Crusher The M22 was generally installed behind severely powerful high torque bigblock engines The M22 is distinguished from an M21 by the angle of the gear teeth