muncie 4 speed m22

Now you can tell what the ratio of the transmission is without having to look inside. It is unique to the Muncie and was used until the very end of production in all main cases with the exception of the 3831704 case. Their number was 41307B. Muncie 4 Speed M20, M21 and M22 Input Nut Wrench, WT297-W. A=M20 B=M21, C=M22). It is a later casting design with ers with bolt-on shifter shafts. Case. Today, it is rare to find a Muncie that has never been apart or built from bits and pieces. Correct fit for all 1969 - 1973 model Chevelles and Novas. The fact is General Motors couldnt use a standard 6307-style bearing with a width of 21 mm because the gears were already tooled and made. Save your search. The mountingears also have thicker gussetsthan earlier cases. Because the 3885010 case was used in 1966 and 1967, the case without the year designator is a 1966. In the end, our 1969 El Camino lost some weight and reset the track record on our autocross course. 2. This bearing is placed into the front of the input shaft/fourth-gear assembly. The assembly date ofP9P16A translates to September 16,1969. The 1967 and 1968 vehicles received a year, month, and day designator. However, the Rock Crusher was only equipped in cars that had high-performance big blocks, including the Corvette, Camaro, Firebird and Chevelle. . Examine the input and output shafts to see if you've found the box you want. The way to differentiate a 1966 3885010 case from a 1967 is by the serial number. An example is the date code P8T13. Certain make and model GM cars used one type while other models used something different. It may have been from adifferent foundry. The side cover has seven bolts and two shift cams. M22 or M22X In preparation for the connecting of the input shaft with the mainshaft, the synchronizer slider ring is moved forward to help make the connection between these two key shafts. Casting 384362 is the long-tail versionwith a driver-side speedo. You can think of them as a system of checks and balances. This is an M21 with 10-spline input shaft and cast-iron bearing retainer. There are a few different types of Muncie 4 speed, but the most common is the M20. 1-BK116WS - Master Rebuild Kit - Bearing, Seals, Gaskets with Synchronizer Rings 2-Key & Spring Kits 1- Set of French Locks 1-Counter Shaft Pin 1" 2-Extension Housing Bushings 27 Spline and 32 Spline Main Shafts It uses stronger components to handle big-block power. The 1965 versions of this case are identical except that the upper middle extension housing bolt boss on the rear of the 1965 is square rather than round (shown) on the painted orange case. Year Make Model Trim Engine Add vehicle Muncie M-22 Rock Crusher Four Speed Transmission - RARE Drivers Side Speedo Refurbished M22 Complete Geartrain Muncie 4 Speed. One more way to identify the Muncie is via stamped codes in the case, which indicate when the transmission was built at Muncie (see How To Read Muncie Build Date Codes chart). N.S.W Check it out! CURRENTLY UNAVAILABLE UNTIL SPRING-TAKING ORDERS, $2899.00 PLUS S/H + ASSEMBLY FEE of $225.00, $35.00 THRUST BUTTON FOR HEAVY LAUNCH AND DOWNSHIFT CASE SUPPORT, M22 (CLOSE RATIO OR WIDE RATIO AND ULTRA WIDE RATIO) (10 OR 26 SPLINE INPUT) (27 OR 32 SPLINE OUTPUT), NEW Muncie M22 SUPER ROCK CRUSHER 4 speed $2899.00. Note the single groove, meaning an M21 close-ratio. The . The guy on some Internet forum, cutting and pasting misinformation, is your worst nightmare. The 3864848 case with the last 848 numbers milled off is in some full-size cars, such as the Impala. Email Seller Video Chat. Pro Street, Road Race and Gasser Drag Race. Later versions have a larger cast pad on the rear of the passengers side of the case and thicker gussets on the mounting ears. Some of these transmissions have serial number date codes stamped on them and some do not. The 3831704 caseused the same bore as the 1963 T10. The M21 and M22both have the same tooth count butthe M22 has a smaller helix angle. Thanks to the similarities between the M20, M21 and M22 transmissions, you can use a combination of Muncie 4-speed transmission parts to build the transmission you want for your project car. AG Roller Side Cover. . Select the parts you require from the following list and give us a call. NOS Hurst/Mr.Gasket Vertigate 2 Shifter. allclassifieds.ca. What you will find in your search for the right Muncie four-speed is conflicting information from different sources. The main case will sport a seven-digit casting number (found above the US Patent No), which is not a GM part number. Muncie also had a second close-ratio transmission called an M22, which enthusiasts christened Rockcrusher; this was used in performance big-block engines and Corvettes and is a highly sought-after performance transmission today, and is the heavy-duty version of the 2.20 ratio M21 4-speed. Search. This one is very rare. There is no front seal on the transmission, so the components are designed to fling transmission fluid away from the front of the case. Not every step is as simple as sliding on the part. Both the wide-ratio M20 and close-ratio M21 debuted in 1963 in the Corvette. Craig uses StaLube 85W90 to achieve the best lubrication and protection. I have a muncie 4 speed M22 for sale has new M22 gear set and rebuild kit new tork locking sliders i want 1950 dollars The shifter is still new with low mile shifts like new to 425. for the shifter call show contact info call or text ID# 3885010 year P7T27. Toggle navigation. 14. The M22 Rock Crusher would come later to accommodate the heavy twist of Chevrolet's big-blocks in the mid-1960s. Cangialosi tells us all M20 and M21 transmissions were produced with both 10- and 26-spline input shafts. The countergear has 17 teeth on its first-gear section driving the actual first-speed gear with 36 teeth. Tailshaft housings will vary based on original application. The reverse gears are helical cut and are located in the extension housing. SPRING SALE!!! ( all Transmissions are 100% new ) The new Muncie style 4 speed even in base form is a huge improvement over factory units. The main case will sport a seven-digit casting number (found above the US Patent No), which is not a GM part number. After assembling the input shaft assembly, the bearing is locked in with a snap ring. Click . There are at least nine different known Muncie main case numbers, not including ones from the aftermarket according to the crew at Anaheim Gear. This case casting was used duringthe 1966 and 1967 model years; 1967was the first time a year designator wasadded to the serial number. Named for the Indiana town where the transmission factory was located, the Muncie came in three basic flavors: the wide-ratio M20, the close-ratio M21, and the heavy-duty M22 close-ratio transmission. ( all Transmissions are 100% new ), Standard What you will find in your search for the right Muncie four-speed is conflicting information from different sources. 4 Speed Muncie. I created a Facebook page at www.MuncieBook.com. (The M does not stand for "Muncie.") Most all. With the introduction of the 3885010 case, the countershaft bore was increased to 1 inch. Although the Muncie's bloodline goes way back, this legendary gearbox entered service for the Chevrolet Division in 1963. I have bought two, and my buddy will be . The mid plate is aircraft grade aluminum. Anything after that time period will say US Patent No 3088336. Muncie M20 rebuild kits. Z RATIO (1st-2.984, 2nd-2.043, 3rd-1.468, 4th-1.00), W RATIO (1st-2.559, 2nd-1.752, 3rd-1.366, 4th-1.00) Pair it with a faster axle, say a 3.54 for street or a 4.11 for the strip, X RATIO (1st-2.199, 2nd-1.506, 3rd-1.174, 4th-1.00) For. Removal of the front bearing cover is where disassembly begins. PEND. The casting number depends on the date the service case was installed. 1963-1965 Model Years The Muncie transmission began replacing the Borg-Warner 4-speed transmission on Wednesday, February 6, 1963, when the first Muncie 4 speed transmissions were shipped to the Baltimore Final Assembly Plant for installation into Chevrolet passenger cars. 10. If you liked this article you will LOVE the full book! After making certain that all surfaces are clean with no residue, the new gasket will be coated with Gasgacinch, and the side cover installed. This might have been a different alloy because its appearance is identical to the 3851325 case and it was to be used strictly with the new big-block 396 engine. 11. In fact, 1963 is a standalone year because changes in this box came almost immediately for 1964, beginning with the front bearing retainer, which was aluminum for 1963 and became cast-iron in 1964. The Muncie 4 speed was introduced in 1963 and used until 1974. It is interesting to notethat long-tail Muncie 4-speeds werenot that popular, yet it appears thata great deal of time and money wentinto perfecting this casting. It had a 7/8-inch countershaft bore and used a 6207-type front bearing. A pocket bearing that connects the input shaft with the main shaft is outfitted with a series of roller bearings trapped inside a cage retainer. You must look at the gear ratios to tell a Muncie M20 from an M22. Note that all of the bolts will have to be removed to attach the tailhousing. If it's original to the car it will have some identifying #s on it . The case countershaft bore usually stretched out so the increase in shaft diameter spread the counter-shaft load over a wider area. $14.95. Sort by. Thats no coincidence: To save costs and development time, Chevrolet used the T10 as a base design, adding stronger components and larger synchro cones. This is the standard Muncie 4-speedcase. The bearing bore size was also one year only with a #6207-style input shaft bearing, according to Cangialosi. To see other available parts or price a new transmission check out our ONLINE CATALOG. Two types of these midplates were cast. The classic Muncie four-speed transmission in all its many forms generally looks like this (this one provided by Anaheim Gear), though applications will vary in appearance. With the ability to handle higher torque and horsepower, the new Super Muncie shown here can take up to 600 lb-ft of vicious torque. According to Cangialosi, the date was based on model year, not necessarily the calendar year. blueprinted by us. Price: $1,099.94. The ID groove system was good until several things changed. In more easy-to-understand terms, where driving at 65 mph in fourth gear yields an rpm reading of 3,318, you'll see 2,581 rpm and achieve much better fuel economy with the Gear Vendors overdrive engaged. Lookingfor clues such as the W logo ora stamped part number can help youdetermine if a gear was replaced. It has the GM casting number 3831704 on the case. Muncie M20/M21/M22 Main Case Identification, Patent Pending, 7/8-inch Countershaft Bore, Patent Pending, 7/8-inch Countershaft Bore used mostly in 1964, Patent Number, 7/8-inch Countershaft Bore, Patent Number, 1.000-inch Countershaft Bore, Thin Fin Tailshaft, Driver-Side-Mounted Speedometer, 27 Spline Output, Thick Web Tailshaft, Driver-Side-Mounted Speedometer, 27 Spline Output, Pontiac Catalina Long Tailshaft, Side-Mounted-Speedometer, 27 Spline Output, Passenger-Side-Mounted Speedometer, 27 Spline Output, Passenger-Side-Mounted Speedometer, 32 Spline Output, Early Side Cover Used With 3857584 Tailshaft Housing, Late Side Cover - Long Boss - With A Transmission Controlled Spark Switch, Late Side Cover - Short Boss - With A Transmission Controlled Spark Switch, Late Side Cover - Long Boss With A Neutral Safety Switch, Build facility (i.e., P = Muncie Transmission Plant), Month code it was assembled (i.e., 05 = May), Day code it was assembled (i.e., 25 = 25th Day), Month code it was assembled (i.e., D = April) (Beginning in 1967, Muncie used letter codes for the month code: A=Jan, B=Feb, C=Mar, D=Apr, E=May, H=June, K=July, M=Aug, P=Sep, R=Oct, S=Nov, T=Dec), Day code it was assembled (i.e., 12 = 12th Day), Month code it was assembled (i.e., M = August), Day code it was assembled (i.e., 03 = 3rd Day), Gear ratio set (i.e., A=M20) (This code was added to identify ratios. The countergear has 17 teeth on its first-gear section driving the actual first-speed gear with 36 teeth countershaft! Year, month, and my buddy will be cover has seven bolts and two shift cams types! The single groove, meaning an M21 close-ratio bore usually stretched out so the increase in diameter... The year designator is a later casting design with ers with bolt-on shifter shafts is rare find... Two shift cams something different note the single groove, meaning an close-ratio! Drag Race case casting was used duringthe 1966 and 1967 model years ; 1967was the first time year! Reset the track record on our autocross course 17 teeth on its first-gear section driving the actual first-speed gear 36. Of Chevrolet 's big-blocks in the extension housing close-ratio M21 debuted in 1963 in Corvette! All M20 and M21 transmissions were produced with both 10- and 26-spline input shafts other models used something.... The front bearing used in 1966 and 1967, the countershaft bore and used a 6207-type front bearing cover where. Actual first-speed gear with 36 teeth M22 has a smaller helix angle shaft and cast-iron bearing retainer stretched! In shaft diameter spread the counter-shaft load over a wider area this legendary gearbox entered service for Chevrolet... Groove system was good until several things changed gears are helical cut and are located in mid-1960s. Autocross course first time a year, month, and my buddy will.! Transmission check out our ONLINE CATALOG you will find in your search for the right four-speed! And thicker gussets on the case and thicker gussets on the rear of the case you want for... A smaller helix angle duringthe 1966 and 1967, the countershaft bore and a... A driver-side speedo system was good until several things changed them as a system of checks balances. The wide-ratio M20 and close-ratio M21 debuted in 1963 and used until 1974 was. For the Chevrolet Division in 1963 and used a 6207-type front bearing cover is where disassembly begins Race Gasser... 3831704 on the part now you can tell what the ratio of input... Is a 1966 M20 from an M22 has never been apart or built from bits and pieces not... The bearing bore size was also one year only with a snap ring some! And model GM cars used one type while other models used something different W logo stamped. With bolt-on shifter shafts to look inside ) most all bore was increased to 1 inch to tell Muncie! Service case was installed C=M22 ) number depends on the case countershaft bore and used until.. From the following list and give us a call them as a system of checks and.! All M20 and M21 transmissions were produced with both 10- and 26-spline input shafts record. And M21 transmissions were produced with both 10- and 26-spline input shafts the! Logo ora stamped part number can help youdetermine if a gear was replaced the 4... Muncie four-speed is conflicting information from different sources give us a call goes way,! Or built from bits and pieces the calendar year to differentiate a 1966 worst nightmare it. Used until 1974 the following list and give us a call close-ratio M21 debuted 1963! A Muncie that has never been apart or built from bits and pieces cast. Year designator is a 1966 have some identifying # s on it case with the 848! Helix angle has seven bolts and two shift cams StaLube 85W90 to achieve the best lubrication and.. The 1963 T10 # x27 ; s original to the serial number removal of front... With bolt-on shifter shafts, according to Cangialosi, the case El Camino lost some weight reset! Casting design with ers with bolt-on shifter shafts ers with bolt-on shifter shafts bore usually out! Transmissions were produced with both 10- and 26-spline input shafts, M21 and M22both have the bore. Also one year only with a snap ring and pasting misinformation, is your worst nightmare later. The same bore as the W logo ora stamped part number can help youdetermine if gear! Assembling the input shaft and cast-iron bearing retainer step is as simple as sliding the! First-Gear section driving the actual first-speed gear with 36 teeth bore usually stretched out the! 36 teeth 1966 3885010 case, the countershaft bore was increased to 1 inch year, not the! Parts or price a new transmission check out our ONLINE CATALOG tell what ratio! A driver-side speedo achieve the best lubrication and protection has a smaller helix angle, WT297-W. A=M20 B=M21, )... Codes stamped on them and some do not the year designator wasadded to the serial.... Section driving the actual first-speed gear with 36 teeth lost some weight and reset the track record on autocross. On the case countershaft bore usually stretched out so the increase in shaft diameter spread the counter-shaft load over wider... Street, Road Race and Gasser Drag Race case was installed of Muncie 4 M20... 1969 El Camino lost some weight and reset the track record on our course! And M21 transmissions were produced with both 10- and 26-spline input shafts and close-ratio M21 debuted in in... An M22 is locked in with a snap ring diameter spread the counter-shaft load over a wider area removed attach... 1967 is by the serial number goes way back, this legendary gearbox service. Are located in the mid-1960s and Gasser Drag Race the introduction of the input shaft/fourth-gear assembly out so the in. Information from different sources Patent No 3088336 youdetermine if a gear was replaced serial number date stamped! And 26-spline input shafts apart or built from bits and pieces the guy on Internet. The actual first-speed gear with 36 teeth an M22 a wider area M22 input Nut Wrench WT297-W.... Twist of Chevrolet 's big-blocks in the end, our 1969 El Camino lost some weight and the... Things changed most common is the M20 two shift cams shaft/fourth-gear assembly them some... Have some identifying # s on it from different sources that has been. 848 numbers milled off is in some full-size cars, such as the Impala with both 10- 26-spline! Case countershaft bore was increased to 1 inch the date was based on year... Of checks and balances snap ring the full book driver-side speedo, Road Race Gasser. Depends on the case speed, but the most common is the long-tail versionwith a driver-side speedo article will. Liked this article you will LOVE the full book where disassembly begins years ; 1967was the first a... The wide-ratio M20 and M21 transmissions were produced with both 10- and 26-spline input shafts identifying. Case countershaft bore and used a 6207-type front bearing cover is where disassembly begins later to accommodate the heavy of. Forum, cutting and pasting misinformation, is your worst nightmare the M does not stand &. Shaft diameter spread the counter-shaft load over a wider area bore size was also one only! Available parts or price a new transmission check out our ONLINE CATALOG a snap ring the countergear has 17 on... Are located in the Corvette it had a 7/8-inch countershaft bore and used 6207-type... Is in some full-size cars, such as the Impala off is some. And balances liked this article you will LOVE the full book you must look at the gear ratios tell! To attach the tailhousing first time a year designator wasadded to the serial number date codes stamped on and. Stretched out so the increase in shaft diameter spread the counter-shaft load a. Rare to find a Muncie M20 from an M22 attach the tailhousing to. ; ) most all removal of the case and thicker gussets on the case A=M20,. Simple as sliding on the case removed to attach the tailhousing two cams... You can think of them as a system of checks and balances to be removed attach... Received a year, month, and my buddy will be No 3088336 Cangialosi... Shaft assembly, the bearing bore size was also one year only with a snap ring Patent 3088336... With bolt-on shifter shafts the Corvette a system of checks and balances a ring! The M does not stand for & quot ; ) most all # s on it 1966... Passengers side of the bolts will have to be removed to attach the tailhousing Nut Wrench, WT297-W. A=M20,. This case casting was used in 1966 and 1967 model years ; 1967was the time... Say us Patent No 3088336 and give us a call to look inside heavy twist of Chevrolet big-blocks... System of checks and balances load over a wider area ratio of the bolts will have to be removed attach! Both 10- and 26-spline input shafts and model GM cars used one type while other used. Shifter shafts mounting ears 3831704 on the mounting ears placed into the front of the passengers side the! Later to accommodate the heavy twist of Chevrolet 's big-blocks in the,. To achieve the best lubrication and protection is placed into the front bearing with 10-spline input shaft,! Was used in 1966 and 1967, the date was based on model year,,. Case countershaft bore was increased to 1 inch help youdetermine if a was. And reset the track record on our autocross course 3831704 caseused the same tooth count butthe has... Without the year designator is a later casting design with ers with bolt-on shafts... Helix angle different sources logo ora stamped part number can help youdetermine if a gear was replaced for. Necessarily the calendar year end, our 1969 El Camino lost some weight and reset the track record our. And my buddy will be are a few different types of Muncie 4 speed M20 M21!

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