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Muncie M22 Rock Crusher Gear Ratios

Guide to Muncie M20, M21, and M22 Four-Speed

8/8/2018 Fourth Gear 1:01 Reverse Gear 2.27:1 M22 Rock Crusher First Gear 2.20:1 Second Gear 1.64:1 Third Gear 1.28:1 Fourth Gear 1:01 Reverse Gear 2.27:1

Muncie four-speeds Hemmings

The 2.56:1 ratio is commonly referred to as the M20. Muncie also had a second close-ratio transmission designated M22 and often referred to as the "rock-crusher," which was used behind the highest-performance engines and in Corvettes, the M22 is a highly

Muncie 4 Speed Transmissions

You would need at least a 4.56 rear end gear to compensate for the dead first gear. That was OK when gas was cheap in 1967 and you did not mind pulling 3000 RPM at 50 MPH while going to work. Times and requirements have changed making both the M21 and

Muncie 4-speed Transmissions Hemmings

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.

Guide to Muncie M20, M21, and M22 Four-Speed

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

Muncie M22 Rockcrusher Close, Wide and NEW Extra-Wide

New Muncie M22 2.20 close ratio or 2.52 wide ratio Rockcrusher gear set is availabe with either a 10 or 26 spline input. Close ratio 26 spline gear sets available in Italian or Korean made. You must select whether you need a wide or close ratio & which input spline count, 10 or 26.

NEW DESIGN MUNCIE M22 ROCK CRUSHER CLOSE RATIO

NEW DESIGN MUNCIE M22 ROCK CRUSHER CLOSE RATIO 4 SPEED THIS IS THE M-22 TRANSMISSION THAT GM COULD NOT BUILD! Newly designed STATE-OF-THE-ART Muncie front case from "Auto Gear". This is by far the "BEST" replacement

NEW Auto Gear Super Case Muncie M22 4-Speed Rock

New Super Heavy Duty Direct Replacement and Strongest M22’s Made With Muncie Auto Gear Super Case and Strongest M22 Close Ratio or Wide Ratio Gears. 10 OR 26 spline input and large 27 OR 32 spline output shaft. C355 Forged Aluminum Mid-Plate.

Magical Muncie Four-Speed Hotrod Hotline

With the leverage and the gears combined with a lever action, you increase the power an engine makes. The Muncie M20 is basically a wide-ratio transmission and was intended for normal street driving use. The early ones had a 2.56:1 first gear. The later 1966-1974 units had a 2.52:1 first gear.

Muncie 4-Speed: The Complete History Chevy DIY

Muncie 4-speeds have varying helix angles in the gearsets. Typically, the M20/M21 gearsets have a first-gear helix angle of 26.4 degrees and an input shaft angle of 39 degrees. The reduction in the angle with the M22 is quite substantial. The M22 first gear has