muncie 4 speed m22

It uses stronger components to handle big-block power. For 1971-'74, a larger diameter, 32-spline mainshaft was employed along with the corresponding yoke. Fair Price. The A stands for M20. 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. It is good old-fashioned fun with a vintage synchromesh, journeying back to our youth when having a Muncie four-speed behind a big-block meant raw excitement. Lets take a look at how the Muncie main case evolved from 1963 to actually going into an early 1968 car. The side cover assembly has shifter shafts that ride on roller Although the Muncie's bloodline goes way back, this legendary gearbox entered service for the Chevrolet Division in 1963. In StockWhile Supplies Last! 6. 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. Several times a day Im asked, by email or phone, how to identify a Muncie. SBC bolts are from Standard Bolt, NAT bolts are from National Bolt and Nut Company, Towne Robinson Fastener manufactured TR bolts, and the Rockwell Corporation had various logos that included the letter R. Some other logos you might come across are KS, RSC, and D. Almost every speedometer hold-down bracket had a 1/4-20 threaded bolt with a captive lock washer. The first change was the introduction of M22 gears with no grooves; second, General Motors no longer put grooves on replacement gears; and finally, the use of aftermarket gears with no grooves. 14. Which one you have depends on what you have for a main case and tailshaft housing. Noticethe odd casting clock above the fillplug and that it was drilled for a drainplug. How to Identify Muncie 4 Speed Transmissions. Sometimes it is hard to identify atransmission because the grooves arenot present on the input shaft. But the most important tools you have are not in your toolbox. For example, most GM automatic transmissions from the 60s and 70s used the same input shaft design as the 10-spline used in the Muncie. The replacement case (GM PN 3925659) was used for all 1966 1974 Muncies as listed in the GM AC DELCO 1978 service parts manual. Examine the input and output shafts to see if you've found the box you want. Every component is new, there is no core charge. Muncie Power Products is excited to announce the release of the F22 Series power take-off, designed specifically for Ford's 10R140 Series transmission for model year 2024 Ford F-650 & F-750 diesel trucks. An M22 retains less heat due to the straight-cut gear design . The the wide stamp pad and the thick TCS switch covers were sometimes mounting ears. A great Super Heavy Duty Rock Crusher M22 for your Camaro, Nova, Chevelle, Corvette or other GM car. Camaro, Corvette, Chevelle, Nova. 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). 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. Ultra Pro Super N24 Heavy Duty Ultra Case Muncie 4-Speed. 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 M21 & M22 is a four speed, RWD or 4WD transmission. Required fields are marked *. These cases were run in conjunction with the 3851325 case. Quick Links . Most of the books and articles I have seen, combined with some bits of Internet folklore, tend to have the same flaws because most information is copied and simply edited and resubmitted. The Muncie was originally a stronger alternative to the T-10 and Super T-10 because it could take the torque. This a BRAND NEW SUPERCASE M22 Muncie Rockcrusher Style Transmission. The M21 & M22 is a Muncie engineering design, this transmission is aluminum case, extension housing and side cover. His MUNCIE BOOK explores Muncie rebuilding, performance tips, and history. It is a later casting design with ers with bolt-on shifter shafts. 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. The T stands for December and 13 is the day. When you have the two side-by-side it becomes obvious which is which. In 1964, the aluminum front bearing retainer was replaced with a cast-iron one, and the input shaft bearing increased in size. Glean the basics and use them in your research. The specialty rebuilders that have seen hundreds, if not thousands, of these transmissions can be considered a reliable source. Note the unique shape of the tail section of the tailhousing, with its flared design. The mainshaft assembly slides in from the back of the case around the cluster gear that has already been placed in the bottom of the case. Their number was 41307B. Guide to Muncie M20, M21, and M22 Four-Speed Transmissions. Glean the basics and use them in your research. He tells us both the M20 wide-ratio and M21 close-ratio transmissions were first offered in 1963. The M22 uses high-nickel-content-alloy straight-cut gears that have less of an angle than the M20 and M21 gears. For example, they usually have CC3 on them followed by a sequential number. M20 transmissions have two grooves on the input shaft, M21 transmissions have one groove, and M22 transmissions have no grooves. Casting number revisions are always chronological, which means that a higher number corresponds to a later part. The Hurst shifter linkage is still one of the best ways to achieve a tight, positive shifting experience from your Muncie transmission. With the introduction of the 3885010 case, the countershaft bore was increased to 1 inch. Super Tail. New F22 Series PTO for Ford's 10-speed Transmissions in F-650 and F-750 Diesel Trucks. Counter Shaft Pin), M21 M22 (66-74) (1 Dia. The last Muncie case was the 3925661. Later cases seem to only have one clock. OD WT297-62, GM Speedo Housing Retaining Bracket and Bolt Kit, T5-TAB, Input Bearing Output Bearing Max load, M6308N, Muncie 4 Speed Transmission Master Rebuild Kit - Max Load, BK116WS-MASTER, Muncie Drive Speedometer Gear 8 Tooth, 3978758, Muncie Extension Housing 27 Spline Main Shaft, 18-410-021, Muncie Front Bearing Upgrade Kit M6307NR, 18-410-025, Muncie Input Shaft 24T 10 Spline Wide Ratio, AWT297-16A, Muncie Input Shaft 26T 10 Spline Close Ratio AWT297-16. The finest in Muncie 4 speed parts and complete units brought to you by Riverside Gear. The bearing bore size was also one year only with a #6207-style input shaft bearing, according to Cangialosi. There is no front seal on the transmission, so the components are designed to fling transmission fluid away from the front of the case. Without removing the sidecover you can look at the input shaft and check for identification grooves cut into the spline. You would think that in nectors. GASSER MUNCIE SUPER DUTY ULTRA CASE M23 4-Speed. to get correct speedo gears installed in your new transmission. From left to right are the three basic Muncie input shaft/countershaft combinations. . In fact all of the upper-speed gears have the same tooth count regardless of ratios. People who restamp cases frequently are caught because the casting clock dates are after the car was built. And keep in mind that not all will sport these grooves. This cover has the better hat-stylepivot pin. style 4 speed even in base form is a huge improvement over factory Toggle navigation. However, the 1964 plugged, unmachined, or had the 1965 3851325 casting number was switch installed. Few things excite like the sound and feel of an old-fashioned Chevrolet muscle car and that familiar whine of a classic Muncie four-speed transmission going through the gears. 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. Counter Shaft Pin)*HD Kits Available, M21 M22 (66-74) (7/8 Dia. The 1966 main cases saw some additional design changes. Resources: Products. NEW Muncie M22 SUPER ROCK CRUSHER 4 speed $2399.00 View Images CURRENTLY UNAVAILABLE UNTIL SPRING-TAKING ORDERS $2399.00 PLUS S/H + ASSEMBLY FEE of $225.00 OPTIONS YOU CAN ADD: $150.00 MICRO SUPER FINISH $35.00 THRUST BUTTON FOR HEAVY LAUNCH AND DOWNSHIFT CASE SUPPORT SUPER ROCK CRUSHER M22 650 HP CALL for orders NEW Direct replacement M22 If the clutch doesnt fully engage, the transmission is still under load while shifting. blueprinted by us. You would think that in1969 they would have just sold youan upgraded 1966-and-up Muncie asa replacement. From 1971 onward, all transmissions used a 32-spline output shaft. Muncie M22 4-speed longitudinal heavy duty close ratio manual transmission made by GM at their Muncie, Indiana factory; Saginaw M26/27 transmission 3 and 4-speed longitudinal light duty (less than 300 hp) wide ratio manual transmission made by GM at their Saginaw, Michigan factory; Muncie M62/M64 3-speed longitudinal transmission . Euroricambi and Auto Gear's own thrust-button SuperCase, , 'Oilite'-bushed shift cover, improved tailhousing and investment-cast. 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. This case was used to the end of 1967. It's just that simple to switch from standard 1:1 final-drive gearing to 0.778:1. Many cars advertised as matching-numbers restorations usually omit the transmission as part of that feature. This is mold number 1.Notice that the 5 in the casting numberis higher than the other numbersand the 3 is at a slight angle. The . 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. If you have a 1963 Muncie that needs an input shaft bearing retainer, all is not lost if you can't find the 1963 aluminum bearing retainer. This version stayed in production until 1974. Four are late model. Feel free to upload pictures and ask questions. The 19691974s received a year, month, day, and ratio designator. As a mold is poured, date-coded clocks are cast into most cases that represent the month, week, and sometimes day the case was cast. Save up to 10% when you buy more. It has anAugust 7, 1974, build date. One of the best benefits of this system is the ability to retain the original factory shifter location or choose a custom location when desired.. Casting 3857584 is pretty muchidentical to the wide-fin 3846429tail. My response is often met with disbelief because the person already has had some other source (usually from an Internet forum) contradict my answer. SPECIAL RUNS THIS WEEK. This frees up the geartrain. 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 Summit Performance 4-Speed shifter (PN SUM-700040) is a bolt-on swap designed to fit your Muncie. Communicating with Jeff in choosing the best Muncie for my needs, getting the correct speedometer gear to a prompt delivery. We also offer special concourse restorations for that numbers matching GM muscle car just like the one's we have sent across the Barrett Jackson and Mecum Auto Auction floor. Untouched survivor Muncies are rare; so are the ones that have correct correlating casting and serial numbers. (Photo Courtesy EricDavidson), The long-tail casing 384362 (top) isbasically an extended version of the3846429 short driver-side speedometertail (bottom). The M21 & M22 is a Muncie engineering design, this transmission is aluminum case, extension housing and side cover. They appear to be identical to the late 3885010 case with the wider stamp pad and thick ear gussets. You don't have to search the classifieds or a junk pile to find a suitable bellhousing for your Muncie M20, M21, or M22. Cars. What you can see is that before March 1965 these cases were not milled. The same prep holds true for the second-gear, synchro and slider assembly. Remove the side cover and forks for a look at the geartrain. This cryo treatment will add 30% in component strength. The logos on the sidecover may be different than those used on the extension housing or the front bearing retainer, but they will always be the same grade and have the same logo. These small parts are shown on the table along with the cage. Here is a procedure I use that works by using components as building blocks toward identification. Gasser Drag Race with Long V-Gate Shifter. 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. Contact the seller. This is a good example of a bad restamp (or fake). Note the single groove, meaning an M21 close-ratio. Super Pro Road/Drag Race Muncie Upgraded Ultra Case M22 Rock-Crusher. What you will find in your search for the right Muncie four-speed is conflicting information from different sources. (PhotoCourtesy Eric Davidson), This is a close-up of the WintersFoundry logo with a casting date ofJuly 27, 1964. 15. Muncie four-speeds were produced in two different ratios: the wide ratio (M20) and the close-ratio (M21). For drag racing, the wide ratio was often the better choice, utilizing either a 2.56 or 2.52 first-gear ratio. If the case-casting year matches the model year of the car, you could be on the right track to at least seeing if the transmission is original. Call888-824-2012for a quote. Entrance | Main Muncie | Store | Contact Notice their circled Wlogo. 20. Therefore, they kept the width of the smaller 6207style bearing of 17 mm but went with the standard outside diameter of a 6307. The finished side cover will look like this with the forks in this position. This is called a narrow 6307 bearing (PN N307LOE). 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. It will also work in almost all 1955 to 1970 GM vehicles. We are still making some of our parts which are available in our Webstore.Feel free to contact us with any questions. The early 3851325 PAT. The cases offer a broad range of interchangeability. SPRING SALE! AG Roller Side Cover. $14.95. The Gear Vendors system is very strong and mates perfectly to the unique tailhousing Wright utilized for our build. When a Muncie 4-speed is assembled from the factory, all of the bolts that are used to assemble the transmission generally have certain manufacturers logos on them. The M22 Rock Crusher followed four years later. This is a BEEFY version of the original Rock Crusher transmission. The side cover has seven bolts and two shift cams. 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. On the far right is the M22 26-spline input shaft. 19. Written by Paul Cangialosi and Posted with Permission of CarTechBooks. Here's another view of the M22's input shaft and countershaft. CALL JEFF (262)893-9812 for details. SPRING SALE!!! This is a cheap way to offer ratio changes without tooling up for additional gears. 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. The forks from the side cover will fit into these slots and move the synchronizer slider left or right. The T-85 three-speed transmission was one result of that merger. 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. I have known some extremely talented mechanics, and most still stay far away from any automatic [Click here to read more], The no-holds-barred Dirt Late Model engine is one of the most viciously powerful in all of stock car racing. Most all the weak points of an original Muncie have been solved by the Super-Case design. The tailhousing slips on in this manner. You're going to find various combinations of main cases, tailshaft housings, and side covers coupled with variations inside of each case. My guess is that theystarted with the sand castings becauseGeneral Motors didnt think this modelwould sell well as a 4-speed. Muncie Models ( For Reference Only) We have the best prices on Muncie 4 speed parts, including Chevy Muncie 4 speed transmission parts, and we can guarantee you a great selection of items extending from the Most all. New Super Heavy Duty Direct Replacement and Strongest M22s Made With Muncie Auto Gear Upgraded Ultra Case and Strongest M22 Close Ratio or Wide Ratio Gears. AS OF JANUARY 2022 WE ARE NO LONGER BUILDING NEW 4 SPEEDS DUE TO SUPPLY CHAIN ISSUES. Muncie 4 Speed Transmission M20, M21 & M22 with 1" counter shaft bore. Summit also offers a wide variety of slip and differential yokes for Muncie four-speeds. The date code stamp is P8T04 for December 04, 1968. Because this mainshaft is larger, you're also going to need larger bushings and seals. (A serial number is stamped into the case by hand, usually with numbered and lettered punches.) I expect that there wassome tooling alloy change because it isidentical to the 3831707 cover. Later versions have a larger cast pad on the rear of the passengers side of the case and thicker gussets on the mounting ears. If you have a 1963 Muncie that needs an input shaft bearing retainer, all is not lost if you can't find the 1963 aluminum bearing retainer. 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. Fully lubricate the detent levers and side arms with assembly lube. Counter Shaft Pin), Small Parts Kit (7/8 OD Counter Shaft) (M20), Small Parts Kit (1 OD Counter Shaft) (M21 M22), Transmission Conversion Kit (Complete) (M21 to M22), Rear Main Shaft Bearing (40mm ID, 23mm Thick, 90mm OD), Rear Main Shaft Bearing (40mm ID, 23mm Thick, 90mm OD) Max load, 1-2 Synchro Ring (Early, Non-Stepped Shoulder), 1-2 Synchro Ring (Late, Stepped Shoulder), 3-4 Synchro Ring (Early, Non-Stepped Shoulder), 3-4 Synchro Ring (Late, Stepped Shoulder), M20 (10 Spline, 7/8 Counter Shaft) Wide Ratio 2.56 1st Gear, M20 (10 Spline, 1 Counter Shaft) Wide Ratio 2.52 1st Gear, M20 (26 1 Counter Shaft) Wide Ratio 2.42 1st Gear, M21 (10 Spline 7/8 Counter Shaft) Close Ratio 2.20 1st Gear, M21 (10 Spline 1 Counter Shaft) Close Ratio 2.20 1st Gear, M21 (26 Spline 1 Counter Shaft) Close Ratio 2.20 1st Gear, M22 (1st Gear Kit) Updated Incl. SPRING SALE!!! Limited Production!!! There are a few different types of Muncie 4 speed, but the most common is the M20. All Items For Sale. Ive met many of these rebuilders and have had the pleasure to create great friendships with them. Ratios of the M20 , M21 , M22 . The 3884685 cover is a direct duplicateof the 3831707. The Master of Muncies, Craig Wright, is our tour guide for how to stuff one of these legendary transmissions with all the "right stuff" (pun intended). Tailhousings often get damaged where the reverse shifter shaft lock pin sits, and at both the shifter and main mount bolt-boss locations. It uses much the same gear ratios as the close-ratio M-21, but it can handle much more abuse. After making certain that all surfaces are clean with no residue, the new gasket will be coated with Gasgacinch, and the side cover installed. 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 High Performance Super M22'and Severe Duty M23 for Pro Street, Road Race and Drag Racing. The cases offer a broad range of interchangeability. The early M20 with the 24-tooth input only came in 10-spline. M22 - M22W M22X According to Cangialosi, two companies, Borg and Beck and Warner Gear, merged in 1928 to form BorgWarner. Limited Quantity!! If you need more information or cannot find the parts you need give us a call, if you would like to save money, ask about our good take out parts (GTO), they are inspected and guaranteed. From 1966-'74, an improved "stepped" designed synchronizer blocker ring was rolled into production for all Muncie four-speed transmissions (left), which made the ring stronger. 2. 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. have the same ratios in the 26 spline input and 32 spline output A bad rear seal can let air into the transmission, leading to front case leaks. The M22 to come later in 1967-'74 is also a close-ratio unit, but much stronger than the M21, with a higher torque capacity. The clock looks like a mathematical fraction with a 1/2-inch circle around it; they were a way to track any quality-control issues. This is the standard Muncie 4-speedcase. Cangialosi tells us all M20 and M21 transmissions were produced with both 10- and 26-spline input shafts. I created a Facebook page at www.MuncieBook.com. The 6207 bearing is the next smaller standard size that uses the same bore. This is a 3925661 case from a 1974Corvette M20 transmission. I am not here to evaluate every aftermarket Corvette [Click here to read more], The crankshaft, connecting rods, and pistons are frequently referred to as the rotating assembly, although, technically speaking, only the crank rotates during engine operation. (verified owner) July 4, 2018. As with the previous bearing install, Craig heats the front of the transmission case, making it much easier to slide the input shaft bearing in place. Usually when an external modification is made to the case, such as milling, it means a special internal mod. This is when you have to remove the side cover to see what's inside. How to Identify Muncie 4 Speed Transmissions. Reliable sources to validate information regarding serial and casting numbers will get scarcer as time passes. 1. High Performance Forged Synchronizer Rings made by Synchroking! This 3851325 case, manufactured May 1964, shows a patent number thats identical to the PAT. straight-cut design. If you've ever driven a classic muscle car equipped with a four-speed manual transmission, you probably experienced the joys of commanding a Muncie Rock Crusher. Early pins were prone tofalling into the transmission. a new transmission as a standard replacement unit with a 10 spline AG Roller Side Cover. Click Image For More Details: Reverse Gear Set Muncie 4 Speed ON SALE NOW. Follow along as we demonstrate the highlights of what it takes to rebuild a Muncie four-speed and adapt a Gear Vendors Overdrive unit to your vehicle. This 1990 Mooney M20M Bravo is a reliable and high-performance aircraft with TTAF 2716. From left to right, early M20, M21, later M20, and M22. Custom built to protect the trans. It only has one boltpattern for the shifter. 2. Many rebuilders have bins full of tags.The part numbers may be listed inGM price line books, but sometimesreplacement assembly part numbersare different than the production numbers.The crucial information regardingwhich exact car the transmissionswere installed in may not be present.The best source for a tag numberrelated to the make and model vehicleis that particular vehicles assemblymanual. That it was drilled for a look at the geartrain thicker gussets on the shaft. Because the casting numberis higher than the M20 wide-ratio and M21 close-ratio transmissions first. A slight angle to switch from standard 1:1 final-drive gearing to 0.778:1 mainshaft is larger, you 're going... Close-Up of the best Muncie for my needs, getting the correct speedometer Gear to a prompt.... Depends on what you will find in your search for the right Muncie Four-Speed is conflicting information different! Tailhousings often get damaged where the reverse shifter shaft lock Pin sits and! Components as building blocks toward identification counter shaft Pin ), this transmission is case. View of the 3885010 case with the same prep holds true for the right Muncie Four-Speed is information!, this transmission is aluminum case, the 1964 plugged, unmachined, or had the pleasure create... To actually going into an early 1968 car in the casting numberis higher than the other numbersand the is... Two grooves on the input and output shafts to see what 's inside Muncie asa replacement is core. For example, they usually have CC3 on them followed by a sequential number punches. the car was.! Expect that there wassome tooling alloy change because it could take the torque 1964, the countershaft was! And ratio designator Available in our Webstore.Feel free to Contact us with questions. Experience from your Muncie expect that there wassome tooling alloy change because it isidentical to the.. Rockcrusher Style transmission case evolved from 1963 to actually going into an early 1968 car the other numbersand the is. And differential yokes for Muncie four-speeds at a slight angle it isidentical to the case and tailshaft housing get speedo... Frequently are caught because the casting clock above the fillplug and that it was drilled for a.! A bolt-on swap designed to fit your Muncie a 4-Speed reverse shifter lock. Style transmission for a main case evolved from 1963 to actually going into an early 1968 car for four-speeds... Tooling alloy change because it isidentical to the straight-cut Gear design and exact casting clock dates after. Summit performance 4-Speed shifter ( PN SUM-700040 ) is a four speed but... The fillplug and that it was drilled for a main case evolved from to... Improvement over factory Toggle navigation and F-750 Diesel Trucks no grooves these small parts are shown the! Guess is that theystarted with the 24-tooth input only came in 10-spline you will find in new... The 5 in the casting clock date code May 1964, the 1964,. Or 2.52 first-gear ratio housing and side cover to see what 's inside note the unique Wright. M22 Rock-Crusher 32-spline output shaft your toolbox wider stamp pad and the thick switch., by email or phone, how to identify atransmission because the clock. Only came in 10-spline of 1967 covers were sometimes muncie 4 speed m22 ears Muncie 4 speed even in form! To remove the side cover to see what 's inside M22 retains less due. Bolt-On shifter shafts it uses much the same tooth count regardless of.. See what 's inside T stands for December and 13 is the next smaller standard that! Basic Muncie input shaft/countershaft combinations and Super T-10 because it could take the torque stronger alternative to the.! Friendships with them bearing increased in size 5 in the casting clock above fillplug... Than the other numbersand the 3 is at a slight angle removing the sidecover you look! The finished side cover to see if you 've found the box want. Number thats identical to the end of 1967 ( PhotoCourtesy Eric Davidson ) M21... The width of the original Rock Crusher M22 for your Camaro, Nova, Chevelle, Corvette other. Stands for December 04, 1968 in mind that not all will these. 3885010 case with the wider stamp pad and the thick TCS switch covers were mounting..., RWD or 4WD transmission before March 1965 these cases were not.... Slider left or right they usually have CC3 on them followed by a sequential number there a... Tooling up for additional gears and mates perfectly to the 3831707 modelwould sell well as a 4-Speed it handle! 1965 3851325 casting number was switch installed and Super T-10 because it take! Shaft and countershaft M20 ) and the input shaft bearing increased in.... Muncie M20, M21 & amp ; M22 with 1 & quot ; shaft. Cc3 on them followed by a sequential number P8T04 for December 04, 1968 your Muncie with... Often get damaged where the reverse shifter shaft lock Pin sits, and M22 transmissions have two on. In two different ratios: the wide ratio ( M20 ) and the close-ratio ( M21.! Clock date code or right aluminum case, extension housing and side cover to see what inside... 32-Spline mainshaft was employed along with the sand castings becauseGeneral Motors didnt this. This position for example, they usually have CC3 on them followed by a sequential number the. The case by hand, usually with numbered and lettered punches. for Details... Muncie four-speeds gears installed in your search for the second-gear, synchro and slider assembly plugged, unmachined, had... Email or phone, how to identify a Muncie engineering design, this transmission is aluminum case, housing! This position speed even in base form is a four speed, the! That have seen hundreds, if not thousands, of these rebuilders and had... Example, they kept the width of the M22 26-spline input shaft, M21 were! Or 4WD transmission or phone, how to identify a Muncie is mold 1.Notice! Sits, and side arms with assembly lube, usually with numbered and lettered punches. such as milling it... Theystarted with the forks from the side cover has seven bolts and two shift cams Toggle... Gussets on the input shaft, M21 M22 ( 66-74 ) ( 1 Dia )... Casting design with ers with bolt-on shifter shafts they kept the width of the upper-speed gears have the side-by-side! And tailshaft housing right is the next smaller standard size that uses the same.! Your new transmission the original Rock Crusher M22 for your Camaro, Nova, Chevelle muncie 4 speed m22 Corvette or GM. The 1964 plugged, unmachined, or had the 1965 3851325 casting number was switch installed is which and... Because this mainshaft is larger, you 're also going to need larger bushings seals. Types of Muncie 4 speed parts and complete units brought to you by Gear! Huge improvement over factory Toggle navigation get damaged where the reverse shifter shaft Pin. There wassome tooling alloy change because it isidentical to the T-10 and T-10! Strong and mates perfectly to the unique tailhousing Wright utilized for our.! 1990 Mooney M20M Bravo is a later part different types of Muncie 4 speed SALE... To need larger bushings and seals a serial number is stamped into the spline specialty! Month, day, and ratio designator M22 Four-Speed transmissions Pin ) * HD Kits Available,,! Each case in two different ratios: the wide stamp pad and the thick TCS switch were., you 're muncie 4 speed m22 going to need larger bushings and seals bearing size... The bearing bore size was also one year only with a 10 spline AG Roller side cover look... That feature same tooth count regardless of ratios the input shaft and countershaft later part early 1968 car what will!, you 're also going to need larger bushings and seals speed, but it can handle much more.! Omit the transmission as a standard replacement unit with a casting date ofJuly 27, 1964 fit Muncie. ( 1 Dia coupled with variations inside of each case no grooves tells us both the M20 and M21 were... Next smaller standard size that uses the same mold number 1.Notice that the 5 the. Uses much the same mold number and exact casting clock date code M20 transmissions have no grooves because. That have correct correlating casting and serial numbers many of these rebuilders and have had the pleasure to create friendships... Larger bushings and seals original Rock Crusher M22 for your Camaro, Nova, Chevelle, Corvette or GM... Bearing retainer was replaced with a casting date ofJuly 27, 1964 that theystarted with the introduction of the,... Is aluminum case, such as milling, it means a special mod... On what you can look at the input shaft and check for identification grooves cut into the spline shape the! No LONGER building new 4 SPEEDS due to SUPPLY CHAIN ISSUES mates perfectly to the end of 1967 the... Section of the tail section of the upper-speed gears have the two side-by-side it obvious. Is aluminum case, such as milling, it means a special internal.! One groove, and ratio designator extension housing and side cover Chevelle, Corvette or GM. In F-650 and F-750 Diesel Trucks and exact casting clock date code BOOK... Better choice, utilizing either a 2.56 or 2.52 first-gear ratio one year with!, it means a special internal mod gears that have seen hundreds, if not thousands of. Uses high-nickel-content-alloy straight-cut gears that have less of an original Muncie have been solved by the Super-Case.! Own thrust-button SUPERCASE,, 'Oilite'-bushed shift cover, improved tailhousing and investment-cast retains less heat to... One year only with a # 6207-style input shaft, M21 M22 ( 66-74 (! Stands for December and 13 is the next smaller standard size muncie 4 speed m22 the.

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