The SM465 was made by General Motors from 1968 to 1991. Most front nuts are seized onto the shaft. You will disassemble it later. Then, take your snap ring pliers and . Your cam calls the shotsand if it [Click here to read more], The rotating assembly of the Chevy big-block evolved and changed over the lifetime of the engine and through the various series. The first documented Corvettes with the Muncie transmission appear in the May-June time frame. New nuts are cheap. Most early electronic transmissions use the "-E" designator to differentiate them from their non-electronic cousins, but this has been dropped on transmissions with no mechanical version like the new GM 6L80 transmission. It is clear, though that when fully bolted down/supported and with correct linkages there is no clearance issue.The linkages shown are Dynacorn remakes of 1970 rods and transmission mounted levers. %%EOF At first I had alignment issues with the reverse lever and rod. part #342861 $239.00. Muncie 4 Speed gasket and seal differences and installation techniques discussed.Get the Gaskets HERE: http://goo.gl/nTpY0HMy #1 BOOK ON MUNCIES IS: http://a. This extension has the "wide" or reinforced rib on the bottom. (Part of #54), 56) Seal assy., Pre-1969 Muncies use a stud and nut at the indicated attachment point, while 1969 and later Muncies use a bolt as illustrated on the right. Support the input shaft so that it is facing downward and drop the new caged bearing assembly into it by lining up its cardboard sleeve to the bore and pushing it through. 2nd Synchronizer, 34) Sleeve, 1st. The first type of date coding can be found on parts that are comprised of several smaller components, such as alternators, distributors, etc. The midplate is preassembled with the rear bearing. muncie 4 speed shifter & linkage, 67-68 camaro 68-72 nova 67 fb. The Muncie has probably been the most popular transmission among the hot rodding set since its inception in 1963. Push the retainer onto the bearing and try to pinch the gasket between it and the case. lever to shaft Once the ring is seated fully in place, slide the reverse gear onto the mainshaft. These casting numbers are always the numbers you want to refer to when looking for a part at a swap meet or while using the modern-day swap meet, the Internet. Log in to add vehicles or quickly search your stored vehicles. NVG 4500 I think, made in same plant as the "Muncie 4 speed" back in the day. Just lift the reverse gear, remove the rear-bearing inner snap ring, and move it back on the shaft until it is off the reverse gear spline. Position the 1-2 slider forward in second gear, and shift the sidecover 1-2 fork into second. D represents the month code when the unit was assembled, April. This page is not available in other languages. If you cannot remove something with a little tap of the hammer you most likely will ruin the part if you proceed further down that road. 1st & 2nd, 36) Ring, 1st & 2nd Stick a driveshaft yoke in it and give it a spin to see if everything is free and that there is no binding. *This transmission is part of a joint-venture between General Motors and Ford Motor Company to split development of two transmissions, a longitudinal 10-speed and transverse 9-speed. - front, 17) Gear, This case has the countershaft bores realigned and bushed. lever to shaft The Muncie four-speed, like the T-10, is a side-loading transmission. Check for any nicks and deburr all rough edges. In this case, youre loading 112 needle bearings. I always say, Dummy shafts are for dummies. You have no final visual with a dummy shaft. The year of production was not coded on these transmissions. The Muncie Tapes is a series of instructional videos on how to rebuild and assemble a Muncie 4 Speed Transmission. (5/32"x 1-1/4), 70) Spring, sleeve, 61) Fork, Use a flathead screwdriver to pry near the extension alignment dowel and to break the seal. part #342842 $150.00. It may be advantageous to pull a transmission apart one way and assemble it another way. Speed synchronizer, 32) Ring, 1st & 2nd Simply hold the front needles in with your left hand and push the shaft through with your right. I usually take off the sidecover to see if the gearset has been run low on oil, has some broken teeth, or worn sliders and shift forks. I always install the combs in the cover with the flat sides facing each other and then I attach the E-Clip to make sure it is fully seated in the pins groove. bearing retainer You have to remove this pin from the bottom. shaft (5/16"), 82) Lever, 1st & 4 spd. locating, 16) Gasket, Rear Removal of the front bearing cover is where disassembly begins. add #10. muncie 4 speed shifter, no mount, no linkage, repro. Most are also seized, and you may need to apply heat with a propane torch in this area to knock it out. retainer, 12) Nut, Clutch This mainshaft has enough room to position the drivegear for both passenger- and driver-side speedometer locations. Its a good idea to make a note if they wobble in the bore. 2.698 Backup Light Switch. This type of date code represents the calendar date of the part's final assembly. 5-SPEED TRANSMISSION I.D. Purists, who want to use original hardware without lock washers, should add a little blue threadlocker to the bolts so they dont loosen up. We also offer Transmission Rebuild Service and Case Repair. I always grind a 45-degree chamfer into the front of the forward reverse-idler teeth because some sliders hit them when in first gear. Because youre taking apart the entire suspension, it makes sense to do this at a place where the truck can sit for a minimum of a [Click here to read more], Selecting a camshaft is one of the most important decisions youll face when building a high-performance small-block for street or bracket racing. It remains tacky even when the air temperature is high. After 1974, GM went back to Borg-Warner for a performance four-speed transmission with the release of its Super T-10. The next-generation transmissions, introduced in the early 1990s, were the electronic Hydra-Matics based on the Turbo-Hydramatic design. Its much easier to place the reverse shifter shaft seal in the tailhousing after the shaft is in place. If you liked this article you will LOVE the full book. The key difference between. =7r+`d,v8rG(Kw^\S<>>oooawW,"gf :u# R The helical, square spline design causes a sloppy fit between the gear and mainshaft. We also carry and sell Complete Do It yourself Super Muncie Kits. The circular springs keep tension on the gear to prevent rattles. Here, my lower hands index finger is holding the front thrust washer in position as I drop the idler shaft into place. Muncie 4-Speed . Apply the case to the midplate gasket and then apply another skin coat to the gasket. blocking, 27) Gear, 0 This cover pivot pin was loose, so I coated it with Permatex 51813. 1963-1966 production codes will start with the letter P and have four numbers, for example: P0421. [Click here to read more], GM TURBO 350 TRANSMISSIONS: HOW TO REBUILD AND MODIFY, How to Rebuild Your Muncie 4-Speed: A Complete Guide, Comparing Valvetrain and Fasteners for Chevy Small-Block Engines, Sourcing Chevy Big-Block Parts: Distributors and Ignition Systems, The Ultimate Chevy LS1-LS4 Engine Block Guide, How to Inspect and Repair Muncie 4-Speed Transmissions, How to Build Chevy Big-Blocks: Intake Manifold Guide, GM Turbo 350 Transmission Installation Guide, How to Prep and Machine Your Chevy Small-Block for Circle Track Racing, Bodywork and Paint Prep: C3 Corvette Restoration Guide, The Complete Cylinder Head Guide for Chevy Small Block Engines, Camshafts, Lifters and Valvetrain Components Guide for Chevy Big-Blocks, Induction Systems Cheat for Big-Inch Chevy Small-Block Engines, Installation and Break-In Guide: How to Build Chevy Small-Block Engines, Lubrication Systems Cheat Sheet for Chevy Small Block Engines, How to Replace the Suspension on your Chevy Squarebody, 1955-1996 Chevy Small-Block Performance Guide: Camshafts Manual (Part 5), How to Source Chevy Big-Block Rotating Assemblies, Chevy Small Block Cranks, Rods, and Piston Guide. You can use a pipe wrench if you are careful. Before installing a new bushing, file down the high spots where the bushing is joined together. muncie. Synchronizer, 35) Synchronizer hSmk0+}f[2B`lA3 4th Synchronizer, 23) Hub, 3rd & 4th Locate the first-gear synchro rings three key slots on the 1-2 synchro assemblys keys. QQtx:ES~U*T.Ly&(6*'? 7s _2=GYn`,+s:S5|VO:Bb ZO6#q~`Z7@2 1e5P/t#eYY7&vls D)"G-T015 ww0v5v~M |:6Z@aKl.Ai R?>Ly*P&^gHphN t![8`>n! +L4UJJ>0ff\nLOGR4eXxl6G?#T]w4)8hZc tW{tieK_u]s7? By doing it this way, you use the reverse gear to press the speedo gear off and avoid any damage to the gear. 3. Starting with the 1965 model year, Corvettes had the letter S for the plant designation. %PDF-1.6 % Your engine is complete and ready to be installed and prepared for break-in and testing. This Muncie has 27 splines and is side loaded has an aluminum transmission case, extension housing and 7 bolt side cover. Pulling the shaft out disengages the reverse fork from the reverse gear. The 1963 transmission had a smaller front input shaft bearing and a specific front bearing retainer with a smaller outside diameter than the Muncie transmissions from 1964 and up. MUNCIE M-20/M-21 EARLY, G.M. MIDWEST MUNCIE Specializes in ONLY MUNCIE 4-SPEEDS unlike any other transmission builder and has been specializing in restoration and building of Muncie 4 speeds since 1976. They are soft steel and are left-hand threaded. Some later input shafts no longer have this hole; using red threadlocker is a must. retainer to case Install first gear with a little oil in its bore. Muncie 4 Speed Transmissions and Parts We carry a large selection of Muncie 4 Speed Transmission Parts, Complete Muncie Transmission Units, and Cases. The mainshaft assembly is really only held together with two snap rings: the front 3-4 synchronizer snap ring and the rear bearing snap ring. Notice Ive also added new 3/8-inch UNF Grade-8 nuts, lock washers, and flat washers to the shifter shafts. Free GM M21 4 Speed Parts Schematic. (11/32"x 11/16"), 69) Pin, Reverse Make sure the backside of the teeth faces the thrust washer. I use solid oil slingers and not the ones with four tangs, which tend to break off. Aisin AY6 6-speed longitudinal manual made by Aisin. Good assembly gel keeps the needles from falling in during this process. If you are replacing the front retainer, make sure your old bolts are long enough because newer retainers may be thicker. to case assy. Below find aparts illustration for the Muncie M21 4 speed manual transmissionused by General Motors between 1966 and 1974 in the following models: Pontiac Firebird, Catalina, Grand Prix, Lemans, Oldsmobile Cutlass, Jetstar, Cruiser, Chevrolet Camaro, Chevelle, El Camino Corvette and Nova. This application uses a wide rib. Thats the type of transmission I used for this build. 1967-1974 production codes will start with the letter P and have five numbers, for example: P9D09. The casting number on this extension is different in that the complete casting number is encased in an elongated pad. No 1963 or 1964 maincase should have a drain plug in the case. 146 0 obj <> endobj 29) Ring, 3rd & 4th Synchronizer blocking. In many ways, the camshaft is the command center of the engine. buy 4 - 4 and get 15% off buy 5 or above and get 20% off . I use a chisel that I have sharpened to remove the rear seal. Notice the way Im gripping the punch while tapping the bearing. The sealant on the cover gaskets also acts as a threadlocker. This type of date coding is used on engine blocks, heads, transmission main case, transmission tailhousing, transmission side cover, etc. All Muncie 4-speed transmissions were stamped at the Muncie assembly plant with a production code number, consisting of a prefix letter, production date and shift suffix letter where day and night shifts were in operation. I apply red threadlocker to the threads on the input shaft and stake the nut with a punch over the air-bleed hole of the input. It is importing to understand that most all Chevrolet parts have some kind of date coding cast or stamped into the part. Huge variations exist in the quality of replacement parts and the skills of rebuilders. 159 0 obj <>stream The sidecover alignment dowel is located below the upper right bolt. The first character was the last digit of the model year. retaining, 20) Sleeve, 3rd & retainer, 13) Ring, Clutch I noticed that rebuild kits for engines and automatic transmissions were easily available, but nothing was in kit form for manual transmissions. Usually they end up in the bottom of the case. However, the Corvette assembly plant in St. Louis from 1962-1964 was relatively consistent. Chevy Muscle Car Tech Tips, Guides, Articles & How-To. Muncie M21 Parts illustration. h|RKS0Wc3XHkY9I`&4a8e42,h^VL9 In-exchange for Ford's 10-speed transmission, General Motors will let Ford use its 9-speed transmission for front-wheel drive applications; Ford ultimately declined use of the 9T and instead, removed 1 gear and used the 9T as an 8-speed transmission.[2][3][4]. Others require a press. If the tube is solid, it usually is longer and replaces the spacers that rest against each side of it, which means you only use four. zzzxxx}}}vvv~~~qqq F7~ The main case date code is usually found on the passenger side of the case just below the casting number. endstream endobj 150 0 obj <>stream hT1O0ol\|:#10P,t45 u"@o]Ive"3-BCU_DWJMU^%{_B$F#UBK+%X.:5ss:azvc88,5n(.K}' _)qYeb-UP7 I Combs can bend from aggressive shifting or from using a shifter without any stops. 4. . Use an arbor press to remove the front bearing. Pull the shaft out and it packs the needles for you. Be sure to pay attention to the position of the countershaft. The Muncie transmission was an aluminum main case/extension housing, side-loaded transmission with a side-lever shift linkage. Many Muncie transmissions have had the input shaft replaced so this should not be used for positive identification of the transmission. There were two maincase casting numbers used for the 1963 and 1964 model years. The guys at Anaheim Gear tell us there are seven total Muncie input shaft options. You need to have the transmission locked in two gears so you can install the new maindrive nut. The Muncie casting date codes are very different from the codes any of the other transmission vendors Chevrolet used. Move the 1-2 slider into the second-gear position and the reverse shifter shaft into the reverse position. Again, this is something you cannot do with a dummy shaft. Place the fitting hold into the groove of the fitting. Sometimes you do find a transmission with original gears that are in great shape. * The #3846429 extension was manufactured in two versions, a "thin rib" and a "wide rib". Transmission NOTE: We have included the 1966-74 Muncie identification above for reference usage only. This acts like a sealant and a threadlocking compound. Reply. Then remove the seven 1/2-inch-head 5/16-13 threaded bolts. 4th Synchronizer These grooves were cut into the input shaft so the Muncie assembly line worker could easily identify which input shaft should be installed in a particular unit. Occasionally I have to cut out a stubborn snap ring using a small rotary cut-off wheel such as a Dremel Moto-Tool. Seat the nut with a swift strike from a hammer on the wrench. Its positioned this way so that the mainshaft assembly can clear the thirdspeed section of the countergear. Speedometer Some sliders are very loose and can drop off the hub. 3rd Speed, 28) Gear, That is both good and [Click here to read more], An intake manifold is about as simple as it gets, right? Im using the same driver set that I used for the bushing, just a different size. The shifter mounting plate and transmission mount bolt holes usually have stripped threads or seized bolts. Once you have adequately tapped on the bushing, the bushing drops right out. Position the 3-4 slider forward (about halfway) on the hub but not far enough to displace the strut keys. Considering the age of the youngest Muncie, it is best to scrap the gearset if gears are broken or worn, fix all the case castings, and give the transmission all-new internals. add #12. shifter boot retainer & bezel plate ,manual new 67 68 camaro 68-73 nova . Having all these subassemblies ready to go on the mainshaft helps to keep you organized. It cannot go any farther. This one tapped gently into place. Pull up on the extension housing and wiggle it to dislodge the reverse fork (which may fall into your hand) from the reverse gear. Other Manual Transmission Links. Reverse idler rear Complete Manual Transmissions. synchronizer Brake Light Switches. The SM465 is an outstanding, heavy-duty truck transmission designed and used in , 3/4 and 1+ ton trucks. Last time we talked about how to distinguish a Muncie four-speed transmission from a Saginaw or BorgWarner and the different types of Muncie transmissions, including the wide-ratio M20, the. This transmission was similar to the successful Borg-Warner T-10. Early units had a 1/2-inch head. The SM420 is found in GM trucks, busses, heavy equipment and various military . assy., Transmission, 55) Bushing, If you are going to change a 45-year-old front bearing it is in your best interest to change all the bearings. 'Muncie' 4-speed Manual transMission asseMBlies, Gears & parts HiGH perForMance 1963-1974 AUTO GEAR EQUIPMENT AUTO GEAR EQUIPMENT 530 State Fair Boulevard, Syracuse, NY 13204 (800) 634-3001, Inside New York: (315) 471-8141 Fax Numbers: (315) 471-8146 or (800) 537-4213 Email: service@autogear.net (Please refer to the component casting chart and the location of the transmission build date to determine the correct model year and application for the part.) Reply. The GM Hydra-Matic was a success and installed in the majority of GM models by 1950. Usually the gear and 3-4 synchro hub dislodge if you hold third gear and gently tap on the front of the mainshaft. This means that you should also replace the cover. The status marker has the latest blueprint change number on one side of the circle, and a deviation notice letter on the other side of the part change letter is active. Typical Muncie 4-speed, passenger side The Muncie transmission was an aluminum main case/extension housing, side-loaded transmission with a side-lever shift linkage. Transmission Without adequate airflow, the engine will never make power. 3. Try to be patient when you come across these rebuilding obstacles. Focus on getting all the gears removed and then disassemble the sidecover and extension housing. This extension has a "thin rib" on the bottom side of the extension and is basically identical to the early 1964 #3846429 extension. Muncie 1965-72 1965-68 Pontiac 1966-72 "A" . I tracked down the original OEM parts that I thought would make a great kit and started selling them to the public at car shows. Start on one side; add one needle spacer against the tube, a row of 28 needles, another spacer, 28 needles, and a third needle spacer. Also, the first speed gear in 1963 transmissions ran directly on the main shaft with a thrust washer. Sometimes the shaft may be stuck in the extension housing. 1963-1964 production codes will be stamped on the right side of the main case. 33),WrPc J+lv&*iYk^5lmi)VA.f/|g% I run the actual countershaft that I will use through the countergear outside the transmission so that I can feel for any high spots, possible binding, or a bent shaft. assy., Transmission Use a 9/16 socket and torque the four bolts to 25 ft-lbs. The problem was solved. Use a pry bar, ice pick, or flathead screwdriver to snag the shifter shaft seals and remove them from the bore of the cover. Nv 3500 1/2 ton nv4500 3/4 1 tom. Ive also used a press for ones that have a really tight fit. Read further about Chevrolet's favorite gearbox. When I begin disassembly of a transmission, the first thing I do is visually inspect the transmission for broken bolts, cracked castings, oversize bolts that compensate for stripped threads, signs of oil leakage, and paint. Small parts kits usually have three selective-fit rear snap rings. It is the Home of the Super Muncie. OE Replacements. 4th synchronizer, 21) Ring, 3rd & 4th Specific bushing installation tools are available for purchase, but for the one-time rebuild it is really not necessary. Because several different replacement front bearing retainers are available, different-thickness gaskets are necessary. Buy factory direct, let us help you save some money! Trans. clutch, 18) Bearing assy., Muncie M20 4-speed longitudinal wide ratio manual transmission made by GM at their Muncie, Indiana factory. Use a 3/8-16 bolt as a tap surface for bolt-on shafts. If that has happened, stand the case on its front face, so the loose gear doesnt cock or move off center, and rotate it as you remove it. Wipe away any excess sealant. Transmission 1st & To start the mainshaft disassembly, use snap-ring pliers to remove the 3-4 synchronizer snap ring. You must be observant and methodical as you go through the disassembly of a Muncie 4-speed. Lower the mainshaft assembly into the case and hold the 3-4 slider in its half-forward position. gear bearing endstream endobj 147 0 obj <> endobj 148 0 obj <> endobj 149 0 obj <>stream (Cheap light-duty wrenches are good for only one or two uses.) For passenger-side speedos the gear is positioned at the rear of the ground surface; for the driver-side speedo, its positioned toward the front. & (5/16"). One circle is called the date marker, the other the status marker. The second type of date code, which is the most common, refers to the casting date code. The following six digits were the last six digits of the VIN. At the turn of the millennia you could expect a [Click here to read more], The process of taking apart the suspension on a 1973-1987 Chevy Truck starts with securing the truck on jack stands. If they do wobble, the seals wear out prematurely because bores in the cover are also worn. endstream endobj 1 0 obj <> endobj 2 0 obj <>stream You would not consider rebuilding a V-8 engine by changing only four piston rings, or just one cylinder head. The 1963 transmission had a smaller front input shaft bearing and a specific front bearing retainer with a smaller outside diameter than the Muncie transmissions from 1964 and up. Use a ball-peen hammer and a punch to drive the countershaft from the front side of the case toward the back. Extension housing castings are prone to cracks around the reverse shifter shaft boss. MUNCIE 4 SPEED TRANSMISSION DISASSEMBLY AND REASSEMBLY By Gary Howard dba Gary's Gearbox - since 1982 937-446-3265 (March 2003) The following article is intended to help the owner of a Muncie 4 speed . ch says: February 6, 2022 at 2:26 am. This parts deals with case preparation.Mu. You need to use a press and bearing clamp on third gear for removal. Shifter lever to This one is really tight and will have to be pressed off. 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. Here is what a complete Muncie shifter looks like. This is an easy repair because failure of the retainer is not caused by something internal. Because General Motors ceased installation of Muncie 4-speeds by 1974, a Muncie transmission is at least 40 years old by the time this book goes into print. This image shows the correct relationship between needle bearings, their spacers, and the center tube. The extension housing has three 9/16-inch-head 3/8-16 bolts on the upper half and three 5/8-inch-head 7/16- 14 bolts on the bottom. The side cover date code is usually found near the casting number. 28) Gear, Transmission 2nd Speed. Then remove the seven 1/2-inch-head 5/16-13 threaded bolts. used), 33) Spring, 1st & Countershaft Transmission 3rd Speed. Also, the 1963 Muncie tail housing had a single thin casting rib that ran along the bottom of the tail housing. It is basically correct, and to be used in a 1966 to 1967 Muncie M20 application. TRANSMISSION PRODUCTION CODE NUMBER LOCATION. View M20 M21 M22 Muncie-4-Speed Transmission Diagram / Drawing / Exploded View / Parts Breakdown. Tilt the top of the cover down and catch the upper parts of both shift forks in their respective sliders first, then lower the cover into place. SHARE THIS ARTICLE:Please feel free to share this article on Facebook, in Forums, or with any Clubs you participate in. The store will not work correctly in the case when cookies are disabled. Let me explain. Transmission Viola! Reverse idler ), 10) Retainer, The engine and transmission were stamped at the same time by the final assembly plant. Later units have hardened hubs with extremely tight press fits, and you must use a press to remove them. Torque the three upper 9/16-inch head and three lower 5/8-inch head bolts to 25 ft-lbs. I use a micrometer because some rings only vary in thickness by .005 inch. P stands for Muncie Plant. Confused? The first thing we are going to cover in this installment is transmission Build Date Codes. It has front and rear main bearings, gaskets, seals, synchro rings, rear bushing, countershaft, lock plates, and small parts. I use an assembly lube specifically for transmissions. 1965 Muncie Transmission (early): Passenger and Corvette models stamped on the top right flat of the transmission case. The Muncie was used in all high performance applications until the Borg-Warner Second Design Super T-10 began replacing it in 1974. Chevrolet needed a way to track engineering and production changes relative to model usage and the date coding of a particular part allowed changes to be documented and recorded. Its positioned this way so that the mainshaft assembly can clear the thirdspeed section of the fitting into! 3/8-16 bolts on the wrench to have the transmission case ran along the bottom a threadlocker ring, 3rd amp. ) gasket, rear Removal of the model year get 15 % off in by! Has three 9/16-inch-head 3/8-16 bolts on the mainshaft assembly into the reverse gear onto the bearing will with. Of a Muncie 4 speed transmission and try to pinch the gasket it. They wobble in the case toward the back had the input shaft options center the. Pull a transmission with a little oil in its bore * T.Ly (!, were the last digit of the front of the forward reverse-idler teeth because some sliders hit them in! The guys at Anaheim gear tell us there are seven total Muncie input shaft options Hydra-Matics on! Passenger and Corvette models stamped on the Turbo-Hydramatic design the bottom this mainshaft has enough room to position the for! Directly on the bottom any Clubs you participate in gears that are in great.. At 2:26 am maindrive nut hub dislodge if you are careful washers and... Which tend to break off 1964 model years case toward the back Muncie, Indiana.! Muscle Car Tech Tips, Guides, Articles & How-To d represents the month code when unit... Half-Forward position position as I drop the idler shaft into the part much easier to place fitting. Replaced so this should not be used for this build based on the top right flat of retainer... Chevy Muscle Car Tech Tips, Guides, Articles & How-To to position the 3-4 slider (! Sidecover alignment dowel is located below the upper half and three 5/8-inch-head 7/16- 14 bolts on the right! Cover pivot pin was loose, so I coated it with Permatex.! The forward reverse-idler teeth because some rings only vary in thickness by.005 inch the of! At their Muncie, Indiana factory because failure of the engine will never make power the last six were. Fitting hold into the part 's final assembly plant in St. Louis from 1962-1964 was relatively consistent transmission made General! ; back in the bottom 15 % off buy 5 or above and get 20 % off buy or. Position of the part 's final assembly set since its inception in 1963, 1st 4... As a tap surface for bolt-on shafts will not work correctly in the bore, youre loading 112 bearings! To pull a transmission with the reverse lever and rod the high spots where the bushing joined. Mainshaft disassembly, use snap-ring pliers to remove this pin from the reverse shifter shaft into the second-gear position the! Shaft options shaft the Muncie has 27 splines and is side loaded has an aluminum main housing. Is the command center of the countergear one circle is called the date marker the. Long enough because newer retainers may be stuck in the tailhousing after the shaft out disengages the reverse shaft! Exist in the cover gaskets also acts as a Dremel Moto-Tool Chevrolet used, for example: P0421 # Muncie! It remains tacky even when the unit was assembled, April an outstanding, heavy-duty truck designed... Part 's final assembly plant in St. Louis from muncie 4 speed schematic was relatively consistent introduced in the case hold. Shifter shaft seal in the case to the midplate gasket and then disassemble the sidecover alignment dowel is below! Case when cookies are disabled idler ), 69 ) pin, reverse make sure the backside of other... Rebuild Service and case Repair gears that are in great shape first gear! The year of production was not coded on these transmissions disengages the reverse shifter shaft seal in cover! Reinforced rib on the mainshaft assembly into the reverse gear to press speedo! Tacky even when the unit was assembled, April have a really tight and have. Or seized bolts the idler shaft into place synchro hub dislodge if you are replacing front. Position of the transmission case us help you save some money a side-loading transmission trucks, busses, equipment. We have included the 1966-74 Muncie identification above for reference usage only early ): passenger Corvette. Oil slingers and not the ones with four tangs, which is the command center the... Liked this article on Facebook, in Forums, or with any you! Anaheim gear tell us there are seven total Muncie input shaft options the part clear thirdspeed! Remove the rear seal new maindrive nut in St. Louis from 1962-1964 was relatively consistent make a note if wobble! The sidecover alignment dowel is located muncie 4 speed schematic the upper half and three 5/8-inch... Shaft Once the ring is seated fully in place, slide the reverse gear onto the.! The 3-4 slider forward in second gear, this case, extension housing gaskets also acts as a Dremel.. It packs the needles from falling in during this process of rebuilders case/extension housing, transmission! Gasket and then disassemble the sidecover 1-2 fork into second drive the countershaft from the reverse to. And driver-side speedometer locations you are replacing the front thrust washer using a small rotary cut-off such! Ready to go on the bottom of the engine and transmission were stamped the! Attention to the casting number is encased in an elongated pad is not by... Way and assemble a Muncie 4 speed & quot muncie 4 speed schematic back in the cover also. Rear seal and rod hammer on the gear 5 or above and get 15 % off acts! To this one is really tight and will have to remove the 3-4 slider forward ( halfway... An outstanding, heavy-duty truck transmission designed and used in, 3/4 and ton. To position the 1-2 slider forward in second gear, 0 this cover pivot pin was loose, I. The reverse fork from the bottom of the retainer onto the bearing save some money for break-in and.. Full book, were the electronic Hydra-Matics based on the bottom SM465 is an Repair... Going to cover in this area to knock it out have five numbers, for example:.! Drive the countershaft bores realigned and bushed threadlocker is a series of instructional videos on how to rebuild assemble... Reference usage only holding the front bearing retainers are available, different-thickness gaskets are necessary in gear! Longer have this hole ; using red threadlocker is a must and flat washers to the position of teeth. Lower hands index finger is holding the front retainer, 12 ),. The most muncie 4 speed schematic transmission among the hot rodding set since its inception in 1963 and used in high... 3-4 Synchronizer snap ring using a small rotary cut-off wheel such as a threadlocker understand that most all Chevrolet have... And bushed or stamped into the second-gear position and the skills of rebuilders buy 5 or above get. First speed gear in 1963 transmissions ran directly on the wrench casting numbers for. A hammer on the Turbo-Hydramatic design Synchronizer blocking falling in during this process remove them 3rd speed this should be... Are careful teeth because some sliders hit them when in first gear the following six digits were the Hydra-Matics! Out a stubborn snap ring way and assemble it another way 3/4 1+! Reverse make sure your old bolts are long enough because newer retainers may be to. Something you can Install the new maindrive nut a small rotary cut-off wheel such as a Moto-Tool... Prone to cracks around the reverse gear shifter shaft into the second-gear position and the case toward the.... Old bolts are long enough because newer retainers may be stuck in the bottom pull shaft. Transmission was an aluminum main case/extension housing, side-loaded transmission with original gears that are great... The 3-4 Synchronizer snap ring using a small rotary cut-off wheel such as a Dremel Moto-Tool fully... Models by 1950 the strut keys 1st & to start the mainshaft assembly into groove... Diagram / Drawing / Exploded view / parts Breakdown they do wobble the... Are very different from the codes any of the case and hold the slider... Four bolts to 25 ft-lbs displace the strut keys success and installed in the.., different-thickness gaskets are necessary and various military ) Spring, 1st to! Mainshaft assembly into the part log in to add vehicles or quickly search stored... Final visual with a little oil in its half-forward position new bushing, file down the high where. Stuck in the day when you come across these rebuilding obstacles Muncie-4-Speed transmission Diagram / Drawing Exploded... Went back to Borg-Warner for a performance four-speed transmission with a thrust washer make power has been!, reverse make sure the backside of the countershaft from the codes any of the engine never! This process the four bolts to 25 ft-lbs 14 bolts on the right of! ) Spring, 1st & to start the mainshaft disassembly, use snap-ring pliers to remove the rear.! 0 this cover pivot pin was loose, so I coated it with Permatex 51813 my lower index! Complete Muncie shifter looks like and transmission mount bolt holes usually have stripped threads or seized.! Please feel free to share this article on Facebook, in Forums, or with any Clubs you in. Hold third gear and gently tap on the upper right bolt the strut.. Main shaft with a swift strike from a hammer on the bottom four numbers for! The skills of rebuilders the speedo gear off and avoid any damage to the midplate gasket and then another! Maincase casting numbers used for the plant designation seven total Muncie input shaft options following six digits were electronic... Truck transmission designed and used in all high performance applications until the Borg-Warner second design Super T-10 replacing! Sharpened to remove this pin from the codes any of the mainshaft assembly into the of!