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Magical Muncie Four-Speed | Hotrod Hotline

The Muncie M21 is a close-ratio unit originally designed to be matched with 4.11:1 or 4.56:1 GM 4 Series differentials. Of course, rodders get a little creative. The M21 was for higher performance cars, which makes it a great box to use in a rod. A close-ratio gearbox .

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Muncie 4 Speed

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. These M22 units are highly sought-after for performance applications. The term "rock crusher" refers to the noise made by the meshing of the strong-er helical gears in the M22.

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The History of the Muncie 4 Speed | It Still Runs

The Muncie 4 speed was a transmission that was used in General Motors (GM) between 1963 and 1975. There was little change to its basic design and operation; in retrospect, it was created to meet car needs at the time, if only for a brief period.

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Muncie 4-Speed Identification Guide - Chevy DIY

The Muncie case (3831704) replaced the T10 4-speed in the 1963 Chevrolet Bel Air and Corvette by mid-May of that year. The T10 front bearing size was reduced in diameter in 1963 only. This meant that the transmission's front bearing retainer and register bore of the bellhousing were also smaller in diameter. The smaller 6207-type bearing ...

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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.

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

Aug 07, 2018 · GM's goal with the Muncie four-speed was to produce a better shift employing larger synchro cones. He tells us both the M20 wide-ratio and M21 close-ratio transmissions were first offered in .

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Muncie 4 Speed & GM Manual Transmissions Buy Sell Trade

Muncie M22 4 Speed "Rock Crusher" Gear Set. Can Also Be Used To Convert Muncie M20 / M21 To M22 Gears. Can be used on all M22, M21 & M20 Muncie aluminum 4-speed transmissions with the 1" cluster pin and the 1st gear rides on a sleeve. Jakolbe Ramirez. August 18 at 9:02 AM.

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New M22 Muncie 4 speed | Auto Parts Sale | Tri-Cities, TN ...

Muncie M22 4 Speed Rock Crusher Auto Gear all NEW but the Side cover 388468 with 9 pound spring call price is firm ... 1984 F-150 with 351 Cleveland, 9in rear, 411gears, M22 - Muncie Trans - $3700 (Coal Twp)" 351 Cleveland " This truck runs well and drives nicely. Its ugly but mechanically everything you want in a fast truck.

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M22 Rock Crusher - 4 Gear Trans Co

Muncie M22 "Rock Crusher 4 SPEEDS FROM 1965 TO 1974: This page is devoted to OEM Complete units; New aftermarket units and OEM parts and NOS parts. We have rebuild kits in stock and ready for shipment. Email us with your requirements and we will assist you in completing your M22 rebuild or providing you with a complete trans.

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M21 & M22 4 Speed Muncie Chevrolet & GM Rebuilt Manual ...

M21 & M22 4 Speed Muncie Chevrolet & GM Rebuilt Manual Transmissions - Buy Factory Direct and Save Money! Having issues diagnosing problems with your M21 & M22 GM 4 Speed manual transmission we can help.

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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 identify an ...

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NEW Auto Gear Super Case Muncie M22 4-Speed Rock-Crusher ...

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. 26 spline input and large 32 spline output shaft. C355 Forged Aluminum Mid-Plate. Super Tail. AG Roller Side Cover. A great Super Heavy Duty Rock Crusher M22 for your Camaro, Nova, Chevelle, Corvette or other GM car.

Motorsports | Custom Gearboxes | Muncie | Autogear

Deal 4: For racing use. One each superfinished plug-quenched Italian lightweight 18 spline clutch (Our 18-089-001) and vibratory deburred oversize nitrided hub (our 18-090-003). Our best fit, with our lowest inertia clutch for the fastest shifting at high rpms. 18-090-003-3x, Auto Gear Direct, $61.00.

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Muncie four-speeds | Hemmings Daily

Sep 23, 2018 · 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. .

The Mighty & Majestic Muncie 4 Speed Transmission - Wilson ...

Ironically, the Muncie was designed based of of the T-10 using its same basic layout. The Muncie 4 Speed came in 3 basic models. the M-20, M-21 & M-22. The Muncie M20 was a wide-ratio transmission and was intended for basic street drive-ability and basically for cruising your car . The first models had a 2.56:1 first gear.

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Muncie 4 speed....M21, M22, Rock Crusher? | The H.A.M.B.

Mar 30, 2009 · I was just wondering how many different variations there are of the Muncie 4 speed and which ones are best and for what reason(s). 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.

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MUNCIE 4 SPEED TRANSMISSION REPAIRS, REBUILDS AND PARTS ...

MUNCIE 4 SPEED TRANSMISSION REPAIRS, REBUILDS AND PARTS M20 M21 M22 ROCKCRUSHER GEARBOXES. We rebuild and repair Muncie and Saginaw 4 speed gearboxes. We also supply new and used spares. Any parts not in stock .

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Muncie 4 Speed & GM Manual Transmissions Buy Sell Trade

Muncie M22 4 Speed "Rock Crusher" Gear Set. Can Also Be Used To Convert Muncie M20 / M21 To M22 Gears. Can be used on all M22, M21 & M20 Muncie aluminum 4-speed transmissions with the 1" cluster pin and the 1st gear rides on a sleeve. Jakolbe Ramirez. August 18 at 9:02 AM.

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List of GM transmissions - Wikipedia

List of GM transmissions. Jump to navigation Jump to search. General Motors is an innovator of automatic transmissions, introducing the Hydra-Matic in ... Muncie SM420 — 4-speed manual used up to 1967, very similar to sm 465 except small changes to gear ratios and location of reverse.

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M-22 Rock Crusher 4-Speed Transmissions by JetBoatBill

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 aluminum case ever built for a Muncie! The front bearing is a "SEALED" bearing, and slightly thicker than the original Muncie's ...

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Muncie 4 Speed Transmissions

Serial numbers for Muncie 4 speeds always begin with the letter "P". P stands for Muncie Plant. Not for passenger car as some self proclaimed specialists may think. The letter M was used to ID the Muncie plant for the Muncie 3 speed, so P was the next logical letter. The letter O would add confusion since it .

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