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I was planning on getting a muncie rock crusher for my 68 cause ive heard theyre awesome trannies. ... The other thing to consider is the first gear ratio coupled with your rear gears.-----Rick Dorion 69 RS Conv,355,Autogear M22,4.10's and I don't worry about stone chips ( yet ). ... here's my impressions on the M22, having gone from a M20: …
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The later 1966-1974 units had a 2.52:1 first gear. They are compatible with a GM 3 Series differential. ... The M22 was eventually dubbed the "Rock Crusher". It is a common misconception that all Muncie transmissions are "Rock Crushers", but it is only the M22 that deserves that name.
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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 identify an M-22 "Rock Crusher," even if it does not have a …
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C-M22 MODEL IDENTIFICATION(1969-1972) ... 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. ... the same ratios but the M22 has straighter cut gears to help prevent end loading thats the only difference between the …
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This a BRAND NEW SUPERCASE M22 4-Speed Rockcrusher Style Transmission. Each new Auto Gear transmission is built from genuine Auto Gear parts, the highest quality available. This is a BEEFY version of the original Rock Crusher transmission.
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M22-Wide vs M22 "Rock Crusher" Jump to Latest ... set manufactured by Autogear was designed to be a better alternative to the M22 since most do not like the 2.20 1st gear ratio of the M22. It also has a better ratio spread then a conventional M20. It maintains the M22 gear helix angles.
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The synchro rings have 35 teeth and the unit has a 4 step cluster gear. The reverse gears are helical cut and are located in the extension housing. Free M21 & M22 5 Manual Transmission Speed Parts Illus. Below we provide a M21 & M22 parts illustration to assist you with the correct identification of the parts you need.
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He mentioned he had a M22 rock crusher in his car, and how rare it was because only a few of the M22's were "Rock Crushers". ... First Posted to TC as Ole Birkland in Feb 1999 Aces 3383 1969 Chevelle SS396, L78, M22, KK 4.10 posi, F41, Blue Light Stereo, Tilt Column, Burgundy/Maroon w/Red Stripe, Black Bench Seat, PS, PDB, …
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The M22 transmission has a 20 degree helix angle on the gear set as opposed to a 45 degree angle found on the M20 and M21 and were made with a higher nickel alloy. The straighter angle was designed to produce less end loading of the gear train and less heat but created more noise, thus the nickname "Rock Crusher" was born.
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When was the M22 first called "rock crusher"? Jump to Latest 21 - 40 of 45 Posts. 1 2 3. 1. 1966_L78 · Premium Member ... "Another change for the M22 was the new low helical-angle cut gear set which increased the inner strength of the transmission dramatically. This gearset was quite noisy and from all indications was called the …
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M22 Identification. Jump to Latest ... Doe this mean it's still an M22 but just manufactured at the Saginaw assembly plant or it's not an M22 "Rock Crusher Transmission". I am just learning ! Save Share. ... The FACTORY M-22s were ONLY a close ratio version (2.20:1 first gear). The aftermarket M-22s are available as either a …
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I'd assume the M22 can take more than 450 hp and ft/lbs because they were offered behind LS6 cars, right? ... the original 50+ year old M20 gearset instantly exploded in first gear when i floored it first time from a rolling start at 30mph. ... pauls improved 1st gear bushing with better oiling; zero rock slider/hubs (use torque lock …
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Muncie 4 Spd Car M22 "Close Ratio" Gear Kit 10 Spline Input This M22 Gear kit will have a 1" Countershaft pin, 10 Spline input, Close Ratio 2.20 1st gear. The kit will include the Input shaft (4th gear), Countershaft, 1st gear, 2nd gear, 3rd gear, and Reverse Idler.
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The first time I heard the term "rock crusher" was in reference to the transmission in the 1967 L88 Corvette. Due to the low gear angle there is a fair amount of gear noise, really like a medium / heavy duty truck transmission. True enough the M22 did trickle out the door in 1965-67 and was buried in the option lists.
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The M22 'Rock Crusher' featured a one-inch countershaft pin bore and shot-peened gears with aggressive helix angles that reduced heat and stress but also increased noise, leading to the nickname as the transmissions rattled their way down the road.
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Identifying Muncie 4- Speeds. Several things are needed to identify a Muncie correctly. The first is a main case casting number. Second a count of the input shaft and output shaft splines and if any rings or grooves exist around the input shaft splines. Third are date codes and VIN numbers that help confirm that the above case and gears belong together.
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Is this a real M22 Rock Crusher? ... And by the way if it's an M22 I think it has the 2.20 first gear which means you need more rear gear. I'd rather have a higher (numerically) first gear in my trans and less rear gear. Bo . Save Share. Like. This is an older thread, you may not receive a response, and could be reviving an old thread. …
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I currently have an M22 Rock crusher in my '56 Chevy pickup, and have another M22 that was rebuilt about 6 years ago by my father but never used. ... like "P0139A" The last letter ID's the trans A M20 B M21 C M22. If you have two M22s, you should buy a lottery ticket . earl schieb, Jun 26, 2008. ... the m-22 has a stright cut first …
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