Home -- Wide Ratio Muncie Rock Crusher Gears
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Jul 15 2013&0183;&32;you want the 256 first gear i have the m22 wide ratio maserio gears with a 430 in the vette and a m20 with 410s in the camaro make sure you bush the case and use a steel mid plate 69 copo 9560 zl-1 automatic email protected 195 on f70-14 polyglas fast race june 2016.
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Aug 08 2018&0183;&32;he tells us both the m20 wide-ratio and m21 close-ratio transmissions were first offered in 1963 the m22 rock crusher would come later to accommodate the heavy twist of .
The muncie was designed to shift better than the t10; it used larger-diameter synchro cones both the m20 wide-ratio and m21 close-ratio transmissions were offered these were the only ratios ever offered from general motors for the muncie 4-speed: m20 first 256:1; second 191:1; third 148:1; fourth 10:1; and reverse 264:1.
The 220:1 ratio is commonly designated as the muncie m21 transmission the 256:1 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 sought-after performance transmission.
Nov 12 2020&0183;&32;for sale is a factory replica of the close ratio muncie rock crusher four speed transmission typically used in high performance 1965 to 1974 corvettes camaros chevelles novas el caminos impalas oldsmobiles and pontiacs also included are hand fitted synchronizer sliders and hubs the hand fitted slidershubs improves up and down shifting quality through all rpm ranges.
New muncie m22 220 close ratio or 252 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 fits all muncie applications with 1" countershaft pin 1966-74.
New muncie m20 252 wide ratio or m21 220 close ratio gear set from $41900 muncie m22 rockcrusher close wide and new extra-wide (298) ratio gear set - italian or korean made new muncie m22 220 close ratio 252 wide ratio or new 298 z ratio rockcrusher gear set is availabe with either a 10 or 26 spline input you must select .
Muncie transmission id and ratio guide series: gear ratio 1st 2nd 3rd 4th: spline input: grooves input: cluster pin : tooth count input: tooth count 4th cluster: output spline: m-20 wide ratio 63-65 m-20 wide ratio 66-70 m-20 wide ratio 71-74 m-21 close ratio 63-65 m-21 close ratio 66-70 m-21 close ratio 71-74 m-22 close ratio 65 .
New super heavy duty direct replacement and strongest m22s 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 super tail ag roller side cover a great.
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