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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 - chevellestuff

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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The Mighty & Majestic Muncie 4 Speed Transmission

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. The M20 and M21 were both release in 1963, but it wasn't until 1965 that the M22 hit the market. The M22 was created for the Corvette Grand Sport racing program.

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

Mar 30, 2009 · That's where the 'whine' come's from with those transmission's.. Also, there's companies out there that are making new gear set's for Muncie's as well..not just stock replacement stuff either. You can outfit an M20 or M21 with Rock Crusher type gears, OR actually make a 3 speed O/D out of a 4 speed case. Forth being the overdrive obviously..

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Restored Transmissions - Show Car Quality Products

finally a show car transmission worthy of your ultimate show car vehicle: the m22! this iconic transmission is based upon the infamous "rock crusher" transmission made famous in the 60`s and 70`s by being installed in the l-88`s, big block 425 hp factory muscle cars and hot rods of the past.

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Muncie 4-speed - chevellestuff

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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Muncie Parts - thegearbox

NEW Muncie M22 SUPER ROCK CRUSHER 4 speed $2399.00. No Price Muncie Master Overhaul Kit. The ultimate Master rebuild kit for Muncie transmissions. Kit includes: From $283.00 . Muncie Overhaul Kit 1966-74. Complete overhaul kit for Muncie 4 speed transmissions, 1966-1974. From $114.95 . Muncie Heavy Duty Competition Overhaul kit 66-74

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Magical Muncie Four-Speed | Hotrod Hotline

A Muncie differs from a Saginaw transmission in that its reverse lever is in the tail housing, not the side cover. The difference between a Muncie and a Borg-Warner is the Muncie's 7-bolt side cover (two less than Borg-Warner units). ... The M22 is called the Rock Crusher. "Dump the Rock Crusher," hot rodders say. People think all Muncie ...

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what is a rock crusher transmission? | Yahoo Answers

Apr 30, 2009 · The Rock crusher was the M-22 Muncie close ratio 4 speed transmission favored in the '60's GM hot rods.Well balanced, smooth shifting and after '60 Aluminum cased capable of a lot of HP.

Muncie 4 Speed Transmissions and Parts

With the quality of used Muncie transmissions getting worse in the last 10 years, the idea of making new improved Muncie parts was becoming a reality. Using the best components currently made for the Muncie today we are now able to supply replacement Muncie 4 speeds for a variety of applications.

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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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Muncie "rock crusher" vs. TKO 600 [Archive] - Pro-Touring

Pro-Touring > The Drive Train Section > Manual Transmissions > Muncie "rock crusher" vs. TKO 600. PDA. View Full Version : Muncie "rock crusher" vs. TKO 600. Bandit. ... Is there anything about a "rock crusher" that is better in some respect than a Tremec TKO 600 as far as the gearset and case, input/output shaft, etc.?

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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.

Muncie 4 Speed Transmissions and Parts

With the quality of used Muncie transmissions getting worse in the last 10 years, the idea of making new improved Muncie parts was becoming a reality. Using the best components currently made for the Muncie today we are now able to supply replacement Muncie 4 speeds for a variety of applications.

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Muncie 4-Speed Identification Guide - Chevy DIY

Most transmissions are missing these tags, but if you want to do a complete restoration they are generally necessary. Even if your Muncie is assembled from a mix of parts, you should be able to determine the ratio. Remember, if the transmission is still in the car only the 1969 to 1974 cases had ratio identifiers in the serial number.

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Muncie 4 Speed Transmissions and Parts

Muncie 4 speed transmissions were used in General Motors cars from 1963 to early 1975. These gear boxes were used when power levels exceeded the limits of the early Borg Warner T10 4 speed. It was actually based on the T-10 design and uses the same basic gear layout.

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Rock Crusher! - jalopnik

So far we've had only automatics in the Cool Transmission Name Of The Day series, but that doesn't mean The General's indestructible Muncie M-22 doesn't deserve its day of CTNOTD glory.

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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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NEW Muncie M22 SUPER ROCK CRUSHER 4 speed $2399.00

The Gear Box is your online source for t56 transmission parts,t5 transmission parts,borg warner t56,muncie transmission,t10 transmission,super t10 transmission,3550 transmission parts,manual transmission parts,t56 transmission overhaul kit, t56 transmission rebuild,rebuilding a transmission,transmission shift fork,t56 synchronizer assembly,t56 transmission gears,Corvette T56 transmission ...

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Muncie M-22 Rock Crusher Four Speed Trans. - picclick

MUNCIE M-22 ROCK Crusher Four Speed Trans. - All New Parts - Drivers Side Speedo - $1,695.00. For sale is a Close Ratio Transmission for 57 thru 74 GM products including Grand Sport Corvette, Chevrolet, Oldsmobile, Buick and Pontiac and is a rare opportunity to own a virtually brand new M-22 Close Ratio Rock Crusher Transmission with a completely new gearset.

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