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chevrolet rock crusher transmission

However, the Rock Crusher was only equipped in cars that had high-performance big blocks, including the Corvette, Camaro, Firebird and Chevelle. Thanks to the similarities between the M20, M21 and M22 transmissions, you can use a combination of Muncie 4-speed transmission parts to build the transmission you want for your project car.

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Muncie 4 speed Transmission Group 4.000

The 2.20:1 ratio first gear is usually referred to as the Muncie M21 transmission; based on GM's production codes. The 2.56:1 ratio is referred to as the M20. 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 Corvettes.

M21 M22 4 Speed Muncie Manual Transmission Midwest

Chevrolet 4 Speed 27 Spline: 1964-1967: Chevrolet & GMC Rock-crusher: 1966-1974: Need Stronger Parts? Midwest Transmission can Cryogenic Treat any shaft or gear. This cryo treatment will add 30% in component strength. Call 888-824-2012 for a quote.

M22 Wide vs M22 quot Rock Crusher quot Team Chevelle

Oct 30, 2008 The M-22 gear teeth are cut at a noticeably lower angle (not quite at a straight angle as some people say). This lower angle of the teeth imparts greater strength to the gears, but it also increases the noise caused by the meshing of the gears. This higher level of noise is where the nickname Rock crusher originated.

Muncie 4 Speed The Complete History Chevy DIY

The 3925661 main case casting was used exclusively and a new tail-housing (3978764) with only three shifter-mounting holes was added. The transmission was also 3/4 inch longer than older models. Fitment issues might arise when installing one of these transmissions in a pre1971 car.


Correct 1970 4-bolt 454/450hp block, M22 4-speed Rock Crusher Muncie transmission and original LS6 CRW 410 12-bolt posi-traction rear end. It also has a 6,500 rpm redline tachometer, bucket seats, console, ZL2 cowl-induction hood and original 14 SS Rally wheels with wide-oval tires. Feel free to contact me via text or phone (330-329-3633) if ...

1965 1969 Corvette Camaro Chevelle Rebuilt M22 4 Speed

This is a Very Rare and Completely and Freshly Rebuilt Original REAL 1965 65 1966 66 1967 67 1968 68 1969 69 and 1970 70 GM Chevy, Corvette, Camaro, and Chevelle M22, (M-22), Muncie Close Ratio Rock Crusher 4 Speed Transmission. It is actually a Rock Crusher from a 1968 Camaro. This has the course spline input with no lines or grooves, the special GM original factory gears, (no aftermarket or ...

1969 Chevy Chevelle Super Sport 396 Big Block Rock Crusher

Chevy Chevelle Super Sport Burn Outs Fly By's Walk-Around this White 2 Door HardTopBig Block 396 with M22 Rock Crusher 4-Speed. Hurst Shifter, Strato Bucket ...

Chevy Transmissions Muncie 4 Speed M22 Rockcrusher

Chevy Transmissions: Muncie M22 “Rock Crusher 4 Speeds were made From 1965 TO 1974: The most popular transmission of it’s time for high performance cars built for Chevrolet and all performance oriented G.M cars. They have the same gear ratios as the legendary M21 but with a heavy duty gearset.

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. 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 …

Muncie M22 4 Speed Rock Crusher Gear Whine YouTube

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.

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