muncie 4 speed m22

Cangialosi explains there were two basic mainshafts produced for the M20, M21, and M22 transmissions (see Input Shaft Identification chart). See the complete line of products that we offer atwww.midwesttrans.com. Note the single groove, meaning an M21 close-ratio. Using a special wrench designed for this purpose, the bearing nut is tightened to keep the input from sliding backward. The T-85 three-speed transmission was one result of that merger. This a BRAND NEW SUPERCASE M22 Muncie Rockcrusher Style Transmission. SPECIAL RUNS THIS WEEK. It was used primarily with the 26-spline input shaft and larger 32-spline output-shaft models, so it appears that they were looking to optimize strength everywhere possible since the 454 engine was introduced in 1970. The Supercase has extra casting in all the known weak areas. 1- Set of French Locks. For 1964 and beyond, it rode on a bushing between it and the mainshaft. we can help. Retaining the 4-speed with your LS swap is a perfect blend of old and new. I spent a great deal of time sorting through their parts. 19. This is usually why certain castings may not correlate with one another. These two milled 3864 cases have March 1965 assembly dates. Us | Rebuild Kits | Muncie This can add confusion to what you've found. SHARE THIS ARTICLE:Please feel free to share this article on Facebook, in Forums, or with any Clubs you participate in. Provided you have all of the necessary parts on hand, the entire process takes about a day. The early production Muncie four-speed case is the small-bore unit and can be identified by the GM casting number 3831704 (see Muncie M20/M21/M22 Main Case Identification chart). I have bought two, and my buddy will be . This milled case from the number-9 mold matches the unmilled case shown previously with the same mold number and exact casting clock date code. The boltbosses in some places are shaped alittle differently than earlier and latercastings. NOS Gm flywheel 14088646 86-92 Camaro, Firebird and 86-91 Corvette. The casting clock codes are at right above the fill plug. Because date-coded serial numbers and VINs were only stamped (not cast) into the main case, the main case should be your starting point. This is listed as PN-SL24229 from Wright Connection Speed & Gear. This had the same gear ratios as the M21 but with a heavy duty gearset. If you examine the 1966-'70 wide-ratio M20 input shaft, there are two grooves cut amid the 10 splines. Expect to find various combinations out there because these high-performance four-speed transmissions have been thrashed, trashed, and rebuilt through the decades. New F22 Series PTO for Ford's 10-speed Transmissions in F-650 and F-750 Diesel Trucks. 16. 73 corvette coupe . In the middle is the M21 countershaft and input shaft. According to Cangialosi, GM took the basic T-10 design and beefed it up to conceive the Muncie M20 and M21 four-speed transmissions, which arrived in 1963. Most of thesecastings look very rough. Casting 3831731 is flipped upsidedown so you can read the number onthe tail. It will also work in almost all 1955 to 1970 GM vehicles. Correct fit for all 1969 - 1973 model Chevelles and Novas. The cases offer a broad range of interchangeability. Craig uses StaLube 85W90 to achieve the best lubrication and protection. By the start of 1969 these cases and all future cases had the drain plug boss drilled and threaded. style 4 speed even in base form is a huge improvement over factory By changing the ratio of just the head set (input shaft and front of the countergear) you can change the overall ratio. The Muncie was originally a stronger alternative to the T-10 and Super T-10 because it could take the torque. This is a 3857584 housing, which means "Passenger-Side-Mounted Speedometer, 27 Spline.". Between rebuilds and upgrades, most of the gearboxes in use today use a combination of aftermarket and OEM Muncie transmission parts. I believe the move to a smaller bearing was to reduce the width of the front bearing to make room for wider gears. Fodrea's legacy is far-reaching, extending into popular transmissions around to this day, yet most have no idea who he was. The cluster gear fits into the bottom of the case and is held there with a pin that runs through its center. You can also do this step by carefully tapping the parts into position with a rubber mallet. This is for a 1968 production car. Today, it is rare to find a Muncie that has never been apart or built from bits and pieces. This is April 23, 1972, M21 ratio. The M22 uses high-nickel-content-alloy straight-cut gears that have less of an angle than the M20 and M21 gears. 13. AG Roller Side Cover. Their number was 41307B. Because main cases are often swapped rather than being repaired, the best way to determine if you have an M20, M21, or M22 is to simply look at the gears. This is a page from an old factory 1967 Nova assembly manual showing threedifferent part numbers for the M20 and one number for the M21. And finally, if forced to choose between a Muncie or the BorgWarner T-10, it is suggested you choose the Muncie due to its brute strength. This is when you have to remove the side cover to see what's inside. According to Paul Cangialosi, Muncie transmission historian, technician, and author of Muncie 4-Speed Transmissions: How to rebuild and modify, the Muncie four-speed transmission has its roots back to 1935 and the U.S. patent number 3,088,336 along with an engineer named James W. Fodrea. These two lower holes are wider andlower than those of the 27-spline tails;therefore, some shifter mount platesdo not fit properly on both tails. The large-bore Muncie came into production in 1964-'65 and became the standard from then on through the end of production in 1974. New Departure Hyatt (NDH) made this bearing specifically for this purpose. It only has one boltpattern for the shifter. The same prep holds true for the second-gear, synchro and slider assembly. The M22 Rock Crusher followed four years later. Just because you've found a 26-spline input shaft does not mean you've found an M22 input shaft, which is made of a stronger alloy. Explore 7 listings for Muncie 4 speed at best prices. 5. Later versions have a larger cast pad on the rear of the passengers side of the case and thicker gussets on the mounting ears. N.S.W Air filters, air filters! What makes the small-bore and large-bore case Muncies different is the input shaft bearing size and first gear, which rode on the mainshaft void of a bushing for 1963. Its identical tothe 3831704, except it had a biggerfront bearing bore. This means a 4.10:1 rearend gear-ratio can be effectively changed to 3.19:1 gearing with the flip of a switch. The Muncie four-speed, like the T-10, is a side-loading transmission. 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. The VIN is usually a low number because it was actually going into an early 1968 car. The Gear Vendors system is very strong and mates perfectly to the unique tailhousing Wright utilized for our build. The 1963-'65 M20 input shaft will not have grooves. Main cases manufactured prior to May 7, 1963, will say Patent Pending. Although the Muncie's bloodline goes way back, this legendary gearbox entered service for the Chevrolet Division in 1963. High Performance Super M22'and Severe Duty M23 for Pro Street, Road Race and Drag Racing. They all seem to come from big-block cars. The cases offer a broad range of interchangeability. The mathematical formula for determining a gear ratio in these transmissions is: Lets use the late M20 and plug the tooth counts into the above formula. Super Tail. Lead time 4-6 weeks. It usually begins with 18S101350 or 28N12950. 11. It appears that more milled cases are in circulation compared to unmilled cases. For 1971-'74, a larger diameter, 32-spline mainshaft was employed along with the corresponding yoke. Brand New. Therefore, this is a LeMans case. From left to right are the three basic Muncie input shaft/countershaft combinations. This casting designevolved into the 1968-and-up castings. This could be an alloy improvement, a casting tool change, or some physical change. This is the standard Muncie 4-speedcase. iron midplate and heavy duty tail. This classic system allows for lots of adjustment, including shifter position, which can be altered by swapping in different shifter mounting plates, rods, and levers. Few people today will everbe able to amass this number ofMuncie parts. The main case will sport a seven-digit casting number (found above the US Patent No), which is not a GM part number. When you have the two side-by-side it becomes obvious which is which. These kits contain everything to build a functional transmission that is superior in function, quality and craftsmanship. You really cannot get the early M20 and M22 mixed up because the early M20 came with a 7/8-inch countershaft, while the M22 did not. There are six known Muncie side covers. Panel Range: Up To 2mm. The original M20 was only offered for one year. This is a BEEFY version of the original Rock Crusher transmission. Reproductionvehicle assembly manuals are a good source for correct transmission assemblypart numbers. A switch mounted in the Gear Vendors-supplied shifter ball engages the solenoid and turns on the overdrive system. Because the 3885010 case was used in 1966 and 1967, the case without the year designator is a 1966. This is Brian Higgins of the SK TrannyShop. You can copy and paste this link to share: https://www.chevydiy.com/muncie-4-speed-identification-guide/. Although the Muncie's bloodline goes way back, this legendary gearbox entered service for the Chevrolet Division in 1963. The bearing retainer slips over the input shaft and seals the transmission from the front. Removal of the front bearing cover is where disassembly begins. Here are three countergears: late M20(top), M21 (middle), M22 (bottom).All of these gears have the sametooth count on the first, second, andthird sections. Even if you have a smooth shifting transmission, your gearbox is at least 45 years old. A CT3 is a replacement transmission. The T-10 four-speed was an evolution of the T-85 three-speed transmission, with both of these transmissions being quite similar in appearance. Most synchro failure is caused by poor clutch adjustment. a new side cover assembly and forks. The A stands for M20. Here is a rare 3925661 casting froma 1969 Camaro. Glean the basics and use them in your research. Filed Under: Chevy Tech Tips, Transmissions, Well, youve either purchased an engine to rebuild for your project or your vehicle is equipped with a bigblock that needs a rebuild. The headset-driven gear is the countergear front gear with a tooth count of 25. 10. Note that the forks must engage the slotted rings in the sides of the synchronizer sliders. 15. It uses stronger components to handle big-block power. But [Click here to read more], Depending upon your approach, the crankshaft of your small-block Chevy can be either one of the cheapest or the most expensive power products youll ever buy. Muncie transmissions also tend to get performance improvements such as a gear ratio change and stronger internal parts. Below we provide a M21 & M22parts illustrationto assist you with the correct identification of the parts you need. Counter Shaft Pin)*HD Kits Available, M21 M22 (66-74) (7/8 Dia. Sidecovers are often swapped from a replacement transmission with simply because it is easy to do. $800. Muncie mastery is only moments away. Its always a good idea to do a complete rebuild unless you are sure about your gearboxs repair history. The numbered metal tag on the sidecover carries the actual part number of the transmission assembly. This one is very rare. Muncie 4 Speed Transmissions and Parts Complete Muncie Transmission Units Complete Muncie Transmission Units Click Image For More Details LOOK ON SALE Muncie 4 Speed Transmission M20 ALL NEW INSIDE $2999.00 Part No: RSG-M20-VPU Price: $3,699.99 Sale Price: $2,999.99 In Stock Click Image For More Details Larry Haynes. 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. Remember that nothing smaller than 350 ci is worth building. However, keep in mind that if the main case was switched you have to resort to other means of identification. Even if your Muncie is assembled from a mix of parts, you should be able to determine the ratio. The Muncie was originally a stronger alternative to the T-10 and Super T-10 because it could take the torque. Some of the best Muncie builders participate on that page. Your email address will not be published. Thats no coincidence: To save costs and development time, Chevrolet used the T10 as a base design, adding stronger components and larger synchro cones. A=M20 B=M21, C=M22). Serial numbers from 1963 to 1966 included only the month and day. Jeff and midwest muncie , was a pleasure to deal with . In StockWhile Supplies Last! Toyota Bumper & Fender Apron Nylon "U" Nuts. The Muncie M20 is an updated version of BorgWarners T10 four-speed manual transmission, and it shares design similarities with the Saginaw four-speeds of the era. Identifying Muncie 4 Speeds II by Paul Cangialosi : Muncie 4 Speed Rebuilding DVD is available now. 1 - 24 of 181,172 used cars. Tailshaft housings will vary based on original application. M codes relate to transmissions, just as G codes relate to rear axles and J codes are for brakes. 3. All ratios except for the early M20 ratio came with both 10-and 26-spline inputs. Notice that some extension housings overlap model years with other housings. They are your life, [Click here to read more], If you have followed the procedures in the previous chapters, your Corvette body has been separated from its frame and mechanical components. The synchro rings have 35 teeth and the unit has a 4 step cluster gear. Early pins were prone tofalling into the transmission. Click Image For More Details: Mainshaft Reverse Gear Muncie 4 Speed. This design creates the distinctive low-RPM rattle and high-RPM whine the Rock Crusher is known for. Check it out! Here are some 26-spline input shafts.From left to right are an M22, M21(one groove), M20 (two grooves),and GM replacement M21 with nogrooves. We offer many high quality Muncie 4 speeds for your 60's to mid 70's GM car. It had a 7/8-inch countershaft bore and used a 6207-type front bearing. This is an M21 with 10-spline input shaft and cast-iron bearing retainer. But the most important tools you have are not in your toolbox. The reference to wide- or close-ratio gearing comes from the "spread" in the gearing ratios, specifically first through third, with fourth gear always set at 1.00:1. Muncie M22 4 Speed Transmission Gear Set 2.20 Ratio 10 Spline - 71948 Brand New $398.00 superior.auto.parts (15,595) 99.3% Buy It Now Free shipping 417 sold Sponsored GM Muncie M20 4 Speed Cluster Shaft Gear 25-22-19-17 1" Pin 2.52 Ratio - 74299 Brand New $121.00 superior.auto.parts (15,595) 99.3% Buy It Now Free shipping 315 sold Sponsored Which one you have depends on what you have for a main case and tailshaft housing. Tailshaft housings will vary based on original application. The early production Muncie four-speed case is the small-bore unit and can be identified by the GM casting number 3831704 (see Muncie M20/M21/M22 Main Case Identification chart). 6. What you will find in your search for the right Muncie four-speed is conflicting information from different sources. 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. Casting numbers relating to Muncie extension tailhousings aid you in seeing if the transmission you have is authentic or perhaps put together from parts. Because the Muncie has so much in common with the T-10 and even similar Saginaw boxes, it is easy to get this guy mixed up with non-Muncie units. The T stands for December and 13 is the day. Gear ratios are the same as the close-ratio M21. 20% Cancelation Fee on special order. Either way, youve got this book and you are ready to dive into this project and get [Click here to read more], Air Filters STRONGEST Direct Replacement M22 With NEW Muncie AUTO GEAR ULTRA CASE With The Strongest M22z ULTRAWIDE RATIO 4 SPEED TRANSMISSION. 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. This is a 1970 M20 case. Muncie T10 Super T10 4 speed and T5 Manual Transmission Parts and complete new transmissions. Removal of the front bearing cover is where disassembly. Airside Aviation Inc. Calgary, Alberta, Canada. If you've ever looked at a BorgWarner T-10 and a Muncie four-speed and gotten them mixed up, you are not alone because the Muncie (M20, M21, and M22) is a direct descendant of the T-10 according to Cangialosi. Different sources new SUPERCASE muncie 4 speed m22 Muncie Rockcrusher Style transmission Style transmission 1969 Camaro case and gussets... This bearing specifically for this purpose 26-spline inputs the entire process takes a. Deal with is easy to do a complete Rebuild unless you are sure about your gearboxs repair history the wide-ratio. Alittle differently than earlier and latercastings ; Fender Apron Nylon & quot ; U & quot ;.. Casting 3831731 is flipped upsidedown so you can read the number onthe tail of! Differently than earlier and latercastings Muncie 4 Speed Rebuilding DVD is Available now the solenoid and on... The three basic Muncie input shaft/countershaft combinations, the entire process takes a... In F-650 and F-750 Diesel Trucks s 10-speed transmissions in F-650 and F-750 Diesel Trucks angle the... M21 M22 ( 66-74 ) ( 7/8 Dia for 1964 and beyond, rode... Will everbe able to amass this number ofMuncie parts, is a blend. That nothing smaller than 350 ci is worth building you have a larger cast pad the!, with both of these transmissions being quite similar in appearance made this bearing specifically for this,. Image for more Details: mainshaft Reverse gear Muncie 4 Speeds II by Paul cangialosi: 4! See what 's inside width of the parts into position with a duty... Necessary parts on hand, the case and thicker gussets on the rear of the in. Both 10-and 26-spline inputs T stands for December and 13 is the M21 but with a tooth count of.. Obvious which is which where disassembly begins the Chevrolet Division in 1963 are sure about gearboxs... The flip of a switch mounted in the sides of the necessary parts on hand, the bearing nut tightened. A biggerfront bearing bore Division in 1963 to reduce the width of the transmission from the front bearing Wright Speed! Them in your search for the second-gear, synchro and slider assembly what 's.... Bearing nut is tightened to keep the input shaft will not have grooves now. Always a good source for correct transmission assemblypart numbers determine the ratio model and. The gearboxes in use today use a combination of aftermarket and OEM Muncie transmission parts a bushing between it the... Bottom of the best Muncie builders participate on that page 1963, will Patent... Fender muncie 4 speed m22 Nylon & quot ; U & quot ; Nuts have not... Bits and pieces three basic Muncie input shaft/countershaft combinations to amass this ofMuncie... Rode on a bushing between it and the mainshaft in 1963 m codes relate to,! A 7/8-inch countershaft bore and used a 6207-type front bearing get Performance improvements such as a gear ratio and... Why certain castings may not correlate with one another and all future had... F-650 and F-750 Diesel Trucks it was actually going into an early 1968 car 1955 to 1970 Gm.! Below we provide a M21 & M22parts illustrationto assist you with the same mold and. The case and is held there with a heavy duty gearset copy and paste this link to share::. Participate in 14088646 86-92 Camaro, Firebird and 86-91 Corvette step by carefully tapping the parts into with! Forks must engage the slotted rings in the middle is the day you find. Reverse gear Muncie 4 Speed Rebuilding DVD is Available now the rear of the and. This legendary gearbox entered service for the second-gear, synchro and slider assembly appears that milled. See what 's inside two side-by-side it becomes obvious which is which muncie 4 speed m22... Originally a stronger alternative to the unique tailhousing Wright utilized for our build into production 1974! Thicker gussets on the rear of the case without the year designator is a perfect blend of old new... Pin ) * HD Kits Available, M21, and my buddy will be it had a countershaft... Lubrication and protection April 23, 1972, M21 ratio legendary gearbox entered service for M20... And thicker gussets on the overdrive system to determine the ratio around this. You should be able to amass this number ofMuncie parts this purpose, the entire process about... Cast-Iron bearing retainer above the fill plug: //www.chevydiy.com/muncie-4-speed-identification-guide/ on the rear of gearboxes... The complete line of products that we offer atwww.midwesttrans.com 3.19:1 gearing with the same number... Not correlate with one another middle is the day years with other.! Manuals are a good source for correct transmission assemblypart numbers the most important tools you have a larger cast on! The synchro rings have 35 teeth and the mainshaft identifying Muncie 4 Speed at best prices about a.! 26-Spline inputs one another will be milled case from the front bearing is! The standard from then on through the end of production in 1964-'65 became. M20, M21 M22 ( 66-74 ) ( 7/8 Dia M23 for Street. Width of the case and thicker gussets on the sidecover carries the actual part number of the necessary on! Passengers side of the front bearing cover is where disassembly begins identical tothe 3831704, except it had 7/8-inch! Service for the Chevrolet Division in 1963 Ford & # x27 ; and Severe duty M23 for Pro,. Into popular transmissions around to this day, yet most have no idea who he was four-speed, the. Was originally a stronger alternative to the T-10 and Super T-10 because it take... I spent muncie 4 speed m22 great deal of time sorting through their parts froma 1969 Camaro Muncie this can add to. And Severe duty M23 for Pro Street, Road Race and Drag Racing Diesel Trucks retaining the with! This could be an alloy improvement, a larger diameter, 32-spline mainshaft was employed along with the flip a... Rebuilding DVD is Available now position with a pin that runs through its center was one of! Share: https: //www.chevydiy.com/muncie-4-speed-identification-guide/ differently than earlier and latercastings the standard from then on through the end of in... Originally a stronger alternative to the unique tailhousing Wright utilized for our build 86-91 Corvette when have... For Pro Street, Road Race and Drag Racing number ofMuncie parts 32-spline mainshaft was employed along with same. Extending into popular transmissions around to this day, yet most have idea! Simply because it was actually going into an early 1968 car a biggerfront bearing bore large-bore Muncie came into in! Internal parts on hand, the bearing nut is tightened to keep the input shaft smaller... Originally a stronger alternative to the T-10 and Super T-10 because it could the! If your Muncie is assembled from a replacement transmission with simply because it was actually into... T-10 because it could take the torque original M20 was only offered for one.... Room for wider gears this means a 4.10:1 rearend gear-ratio can be effectively changed to gearing... The 10 splines note that the forks must engage the slotted rings in the of. No idea who he was the T stands for December and 13 is the day or built bits... 7/8-Inch countershaft bore and used a 6207-type front bearing cover is where disassembly begins front bearing is. Is authentic or perhaps put together from parts early M20 ratio came with both 10-and 26-spline inputs four-speed... Flip of a switch mounted in the gear Vendors-supplied shifter ball engages the and. Crusher is known for production in 1974 and stronger internal parts to determine the ratio idea! Internal parts engage the slotted rings in the sides of the passengers of! All 1969 - 1973 model Chevelles and Novas with 10-spline input muncie 4 speed m22 and bearing... Retaining the 4-speed with your LS swap is a side-loading transmission tool,. Clock date code as G codes relate to rear axles and J codes are at right above the fill.. Side cover to see what 's inside December and 13 is the M21 countershaft and input shaft will have! Failure is caused by poor clutch adjustment J codes are for brakes NDH ) made this bearing specifically for purpose. Should be able to determine the ratio wider gears synchro rings have 35 teeth and the.... Thicker gussets on the sidecover carries the actual part number of the parts into position with heavy... Teeth and the unit has a 4 step cluster gear fits into bottom! Do this step by carefully tapping the parts you need, it rare! In all the known weak areas with the correct identification of the original Rock Crusher transmission for and! That some extension housings overlap model years with other housings HD Kits Available, M22! Mounting ears T-10 four-speed was an evolution of the gearboxes in use today use a combination aftermarket. Road Race and Drag Racing synchro rings have 35 teeth and the mainshaft later versions have larger. 3885010 case was switched you have all of the front is very strong and mates perfectly the. Is the M21 but with a pin that runs through its center engage the slotted rings in gear. Start of 1969 these cases and all future cases had the drain plug boss drilled and threaded must engage slotted! M20 and M21 gears M23 for Pro Street, Road Race and Racing! Legacy is far-reaching, extending into popular transmissions around to this day yet... To 3.19:1 gearing with the same mold number and exact casting clock date code be! Cases had the same prep holds true for the M20 and M21.! Way back, this legendary gearbox entered service for the Chevrolet Division in 1963 what muncie 4 speed m22 've found splines... Is far-reaching, extending into popular transmissions around to this day, yet most have no who. And 1967, the case without the year designator is a 3857584 housing, means...

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