muncie 4 speed schematic
Lift the maindrive gear and front bearing assembly out of the main case cover opening. TRANSMISSION CODE NUMBER IDENTIFICATIONTRANSMISSION CODE NUMBER IDENTIFICATION. Muncies are rarely tight enough to need a press. 1-BK116WS - Master Rebuild Kit - Bearing, Seals, Gaskets with Synchronizer Rings . l'4qHs1apa pvE4GIN-2?1Sg}}UIS; L 9e{m5]&4/n+X?,t>/L`O}mHBzc_m9xc&vD Other Manual Transmission Links. If you have a split-seam tube always use six needle spacers. We offer both new and used as well as parts that are hard to find. Before final assembly of the mainshaft the synchro assemblies should be matched and assembled. Muncie Synchro Parts: Muncie Diagram / Drawing: Sort By: Page of 4 : 6308N Ball Bearing, 23MM Wide . The Muncie has probably been the most popular transmission among the hot rodding set since its inception in 1963. The shifter mounting plate and transmission mount bolt holes usually have stripped threads or seized bolts. P represents the manufacturing plant, Muncie. Once its together, I trial fit it by installing the input shaft and front bearing from the inside of the case. High Performance Forged Synchronizer Rings made by Synchroking! Military specification versions were made through the early 1980s. Within 10 minutes the pin is locked and sealed in place. It helps make your rebuild look more professional. There are no torque settings because you cant get a torque wrench on this. Put your other hand over the C-clip to catch it once it clears the cam. 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. Its a good idea to clean up the edges with a file and check your clearances with a yoke before final assembly. Most are also seized, and you may need to apply heat with a propane torch in this area to knock it out. Some speedometer drivegears on 1969 and 1970 transmissions are plastic and are held on with a clip. Vehicle Identification Number Stamped Into The Main Case. The basic rear-wheel drive Turbo-Hydramatic spawned two front-wheel drive variants, the transverse Turbo-Hydramatic 125, and the longitudinal Turbo-Hydramatic 425. 09 represents the day of the month the unit was assembled, the 9th day of April. There were two maincase casting numbers used for the 1963 and 1964 model years. 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. Sometimes you can spread the bushing end. ret. hb```d``rd`f``h`b@ !3G* We provide parts in three separate categories for the Muncie M20 4 Speed: Overhaul kits by application include standard kits, heavy duty kits for more horsepower and "WS" kits that include both bearings and syncro rings as well as gaskets and seal s. IDENTIFICATION - CHEVROLET 4spd, RWD, M20, Muncie, aluminum case, 7 bolt side cover Then remove the seven 1/2-inch-head 5/16-13 threaded bolts. The 3-4 sliders tapered side faces the front and the 1-2 tapered side faces the rear. Remember that nothing smaller than 350 ci is worth building. Put a little sealant on the top of the pin as well as on the bottom of the pinhole. To set up synchronizers, start by placing one key in first and then the other two keys as you wrap the spring around them. 0 transmission countershaft, 4) Washer, Use snap-ring pliers to spread the rear bearing retaining ring open and then tap the bearing with a hammer to dislodge it from the ring. Place the case facing down and realign the countergear with the cases countershaft bores and then slide in the countershaft. Stay up-to-date on our special promotions and deals. Start by placing the 1-2 shifter shaft in the second-gear position. Place third gear and its synchro ring on the mainshaft. Of the regular production codes, one particular Muncie 4-speed type appears. The easiest way to discern the proper date mark circle is to look for the week designator dots. They have no moving parts and merely have to connect the carburetor or throttle body with the intake ports. You must be observant and methodical as you go through the disassembly of a Muncie 4-speed. _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? Once the seal has been installed, wipe any excess sealant off the housing. Install the second-speed gear with the synchro ring and the 1-2 synchro assembly. A simple trick will save you time and prevent damage to your speedometer drivegear. The bottom half of the Date Marker circle will have 1 to 5 dots that represent which week of the month the part was cast. If you plan to reuse them, you should remove the gear over a tray so you avoid losing any needle bearings. shaft (11/32" x GM Muncie SM420 Transmission. The 1965 Muncie was identical to the 1964 version. I always say, Dummy shafts are for dummies. You have no final visual with a dummy shaft. 146 0 obj <> endobj & In this video, I show you how I installed the Muncie M21 4-Speed behind an LS Engine in my 1964 Chevy Impala using the factory Z-Bar and mechanical clutch li. Characteristics of the VIN stamp, including the location of the pad, the type size of the stamp, and the stamping method (gang or individual), was chosen by the final assembly plant. All rights reserved. Also, the first speed gear in 1963 transmissions ran directly on the main shaft with a thrust washer. The sealant on the cover gaskets also acts as a threadlocker. 2. Removal of the front bearing cover is where disassembly begins. The spring is installed so that it cannot pop off and land inside the transmission. 4th Synchronizer shaft (5/16"), 82) Lever, 1st & View M20 M21 M22 Muncie-4-Speed Transmission Diagram / Drawing / Exploded View / Parts Breakdown. 1. Using snap-ring pliers, install the 3-4 synchro locating snap ring in the mainshafts snap-ring groove. 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. 1963-1966 production codes will start with the letter P and have four numbers, for example: P0421. 4 spd. Longitudinal transmissions [ edit] Aisin AR5/MA5 5-speed longitudinal manual made by Aisin. Position the nut with the tapered side facing forward. Make sure the seal is square in the bore and that you drive it in evenly. Reply. The first character was the last digit of the model year. retaining, 20) Sleeve, 3rd & buy 4 - 4 and get 15% off buy 5 or above and get 20% off . Small parts kits usually have three selective-fit rear snap rings. The helical, square spline design causes a sloppy fit between the gear and mainshaft. Place a new locating snap ring in the midplate, spread it open, and start the rear bearing in the bore. Good assembly gel keeps the needles from falling in during this process. The Muncie four-speed, like the T-10, is a side-loading transmission. This number is much different than the casting date codes for the individual parts that make up the transmission, which is covered below in the Casting Date Code section. 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. The reverse shifter shaft lock pin is a No. zzzxxx}}}vvv~~~qqq F7~ Focus on getting all the gears removed and then disassemble the sidecover and extension housing. It is permissible to bend the combs in a vice until they are square with each other. After 1974, GM went back to Borg-Warner for a performance four-speed transmission with the release of its Super T-10. New combs are harder and much better than the older ones. 0 tapered pin that is wider at the top than at the bottom. Ive also used a press for ones that have a really tight fit. 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. Early units had a 1/2-inch head. By doing it this way, you use the reverse gear to press the speedo gear off and avoid any damage to the gear. (5/16"-18x3/4"), 79) Washer, The Turbo-Hydramatic was used by all GM divisions, and formed the basis for the company's modern Hydramatic line. Notice the way Im gripping the punch while tapping the bearing. You may also want to check casting numbers before you purchase a vehicle. This type of date code represents the calendar date of when the part was manufactured. Never use a dummy shaft to load needles. Place the fitting hold into the groove of the fitting. 2.698 Backup Light Switch. Grinding tends to create burrs on the gears so I use a bench grinder and then clean up the edges with a flexible shaft. Filed Under: Chevy Tech Tips, Transmissions, Power adders have been used since the earliest days of the automotive industry, and they continue to be a popular method for boosting engine performance cost effectively and reliably. The Muncie was used in all high performance applications until the Borg-Warner Second Design Super T-10 began replacing it in 1974. I do it this way because other techniques call for you to hammer on the bearing after the input is installed and that can damage the fourth-gear ring. Use a 7/16-inch socket and torque the bolt and lock washer to 10 ft-lbs. 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. Be sure to pay attention to the position of the countershaft. used), 33) Spring, 1st & '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 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. lever to shaft The problem was solved. SHARE THIS ARTICLE:Please feel free to share this article on Facebook, in Forums, or with any Clubs you participate in. All of the casting codes should be within 30 to 90 days of each other and in most cases will be reasonably close to each other. 3rd Speed, 28) Gear, Use the correct tools and techniques when performing any or all of the procedures. If the case was damaged from a gear explosion, the thrust washers are often jammed from debris. Starting with the 1965 model year, Corvettes had the letter S for the plant designation. If we can put together enough odd codes maybe we can publish a few in the future. One half of the Date Marker circle will have a month designator for when the part was cast. *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. 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. Posted in Corvette, C1 1953-62, Technical, C2 1963-67, Technical, C3 1968-82 and Technical. Many people have copied my idea, yet I still have sold thousands of kits. Again, this is something you cannot do with a dummy shaft. bearing, 6) Spacer, Position the reverse shifter shaft forward so it is in reverse. Use grease to place the reverse-gear fork in the lever arm. illustrated parts break down illustrates individual part placement in the assembly. 1965-1974 production codes will be stamped on the right side of the main case, just ahead of the tailhousing on the vertical boss pad of the case. I like to use lock washers even though the factory never used them. Muncie Transmission Identification. Use a 3/8-16 bolt as a tap surface for bolt-on shafts. Simply lift the forward reverse idler and thrust washer from the case. I use grease to hold it in place. MUNCIE M-20/M-21 EARLY, G.M. ), 10) Retainer, gear bearing This means that you should also replace the cover. Make sure the backside of the teeth faces the thrust washer. Place the slinger on the input shaft and tap on the front bearing. %PDF-1.2 % Place the exhaust pipe separator chisel in the oil return slot. This code was used until 1967 when the code was changed to include the model year. Shifter lever to If they do wobble, the seals wear out prematurely because bores in the cover are also worn. 2. Make sure to position and guide the three synchro keys of the assembly into the second-gear synchro ring key slots. This side cover was also used through the 1965 model year. Remove the side cover and forks for a look at the geartrain. MUNCIE 4-SPEED MANUAL TRANSMISSION ASSEMBLIES, GEARS & PARTS APPLICATIONS: GENERAL MOTORS 1963-1974 GENERAL MOTORS (HIGH PERFORMANCE) AUTO GEAR EQUIPMENT 530 State Fair Boulevard, Syracuse, New York 13204 (800) 634-3001, Inside New York: (315) 471-8141 Save your vehicles, create project lists, and track your orders. 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. Lower the mainshaft assembly into the case and hold the 3-4 slider in its half-forward position. Muncie 1965-72 1965-68 Pontiac 1966-72 "A" . My Dad Taught Me Everything About Classic Cars, Classic Mustang Wheel and Tire Combinations Part 2, Classic Mustang Wheel and Tire Combinations Part 1, Interior Upgrades for your Classic Mustang. 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. Always check to see that the date marked precedes the final assembly stamp code. This chart should help with Muncie identification. Special wrenches are sold for removing them but may break during the removal process. driven gear If it is a used part, make sure that the idler has no up-and-down play on the shaft. Once clamped, the 51813 Permatex sets up within 15 minutes. I drive it straight down the shaft until its seated. retainer to case (5/i6"- 18 x 3"), 9) Lockwasher, The steel gears are soft and pullers easily damage them. Its positioned this way so that the mainshaft assembly can clear the thirdspeed section of the countergear. gear bearing Your #1 Source of Restoration and Restomod Parts! Use a bearing cup installer with the drive cone flipped backward to install the bushing. Nv 3500 1/2 ton nv4500 3/4 1 tom. Specific bushing installation tools are available for purchase, but for the one-time rebuild it is really not necessary. Never use silicone sealant because it takes days to dry. The circular springs keep tension on the gear to prevent rattles. Checking how reverse feels in a Muncie rebuild and checking for binding by simply spinning the transmission can be accomplished easily on a work bench. R@W4a'K/n$ ~%JnH0('$uHQ2yh? 2nd Synchronizer, 31) Hub, 1st &2nd This type of date coding is used on engine blocks, heads, transmission main case, transmission tailhousing, transmission side cover, etc. (5/16"-18), 81) Lockwasher, If you want to clean up and detail the engine compartment of your car, there is no better time. Once you have adequately tapped on the bushing, the bushing drops right out. add #12. shifter boot retainer & bezel plate ,manual new 67 68 camaro 68-73 nova . This information was only useful to the Muncie plant by allowing the tracking of problem parts. The number of needle bearings and spacers used on the countershaft can be intimidating. The most common small repair is to change the front bearing retainer. Free GM M21 4 Speed Parts Schematic. (7/16"- 14x1-7/8"), 58) Gear, The casting number on this extension is different in that the complete casting number is encased in an elongated pad. Install the input shaft assembly from the inside of the case. - 7/8" diameter cluster gear pin- 5/16" course thread studs to attach shifting rods to transmission- speedometer gear on left side- thin blocking rings. 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. Sometimes you do find a transmission with original gears that are in great shape. The workflow pattern is as follows: Disassemble the entire gearbox, inspect all components and parts, repair or replace all parts that are excessively worn or damaged, inspect all subassemblies, check subassembly fits and clearances, and then conduct the final assembly. As part of their joint-venture, Ford will let GM use the 10-speed transmission with rights to modify and manufacture it for their own applications. hbbd``b`@ H0_A ' Sales & Service Teams now available 7 days a week! 2. I was the first to get my kits into most of the specialty muscle car retailer catalogs. You cannot look at a rebuilt transmission simply as an object with a price tag. lever to shaft New gears can have tight bushings, so be sure that it spins freely on the shaft before installing it. Electric driver guns are cheap now and speed up fastener removal and installs. I spend most of my time building new transmissions with all-new parts. 2nd 3rd & 4th Its a good idea to shock them first by hitting the heads with a punch and hammer. Log in to add vehicles or quickly search your stored vehicles. Once you remove the shaft you get a great view of the packed needles. This means that you are completely disassembling the gearbox, inspecting all parts and components, replacing worn and damaged parts, installing suitable gaskets and bearings, and then assembling all the components into a complete unit. endstream endobj 4 0 obj <>stream Notice the new fill and drain plugs on the main case. For the best experience on our site, be sure to turn on Javascript in your browser. Check for any nicks and deburr all rough edges. Never use a hammer as a substitute for a press. driven gear, 60) Retainer, Step 2: Remove Sidecover The sidecover alignment dowel is located below the upper right bolt. Corvettes saw installation by May through June of 1963. If they are really bad you should change them out. We also discussed the best ways to identify a Muncie, which is by the casting numbers on the external components of the transmission. At this point, the geartrain is completely apart. Read further about Chevrolet's favorite gearbox. Light tapping should drive the bearing out of the bore. assy., Transmission There was only one side cover casting number used during the 1963 and 1964 model year. Huge variations exist in the quality of replacement parts and the skills of rebuilders. % "v5FiSz:ByFR:HyP^dw?e S( oJ`^b~_ ! This was accomplished with minimal changes to the overall design. On the main cases, the code is usually found on the passenger side of the case, below the casting number. Last edited on 22 December 2022, at 04:17, "Hydra-Matic History: The First Automatic Transmission", "Exclusive: An Inside Look At Ford's New 10 Speed Transmission", "Ford and GM finally consummate 9- and 10-speed joint development", "Ford passes on GM's 9-speed automatic transmission", "GM Hydra-Matic 9T50 Transmission Confirmed for Chevrolet Cruze, Malibu, Equinox", https://en.wikipedia.org/w/index.php?title=List_of_GM_transmissions&oldid=1128819580. Make sure all gears spin freely on the mainshaft and put the whole assembly aside. part #342861 $239.00. Pull the shaft out and it packs the needles for you. 151 0 obj <>/Filter/FlateDecode/ID[<6EFC8418C7EE2C061C8369EE535D4B2D>]/Index[146 14]/Info 145 0 R/Length 49/Prev 937887/Root 147 0 R/Size 160/Type/XRef/W[1 2 1]>>stream ** The #3846429 extension was manufactured in two versions, a "thin rib" and a "wide rib". The tip of the mainshaft is easily damaged. You are welcome to download and print this illustration. You do not need to change the split roll pin in the reverse idler shaft unless its loose or you are replacing it with a new shaft. =7r+`d,v8rG(Kw^\S<>>oooawW,"gf :u# R l)3:9(kW7x M,]Ff2 Ford led the design of the 10-speed transmission, as well as filing the design patents for said transmission. 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. Here, Im using a block of wood. The most frequently replaced hard parts are shift forks, sliders, and the front retainer. reverse sliding, 40) Bearing assy., 1965 Muncie Transmission (early): Passenger and Corvette models stamped on the top right flat of the transmission case. The letter O would add confusion since it resembles zero. Transmission 4. The Muncie 4-speed transmission was used with many different GM models and engine combinations from 1963-1974. Most passenger car plants stamped the VIN on the top, while other plants stamped it on the side, near the assembly date code. In the past, you could purchase replacement parts only from General Motors and a few aftermarket sources. Others require a press. The opposite side of the date marker has between one and five dots, representing the week of the month. I use a micrometer because some rings only vary in thickness by .005 inch. P represents the manufacturing plant, Muncie. (Part of #54), 56) Seal assy., 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. 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. That is both good and [Click here to read more], An intake manifold is about as simple as it gets, right? Once the bearing goes through the snap ring, you can release the pliers and gently tap down the bearing until the ring seats itself in the bearing groove. The guys at Anaheim Gear tell us there are seven total Muncie input shaft options. Countershaft Extension housing castings are prone to cracks around the reverse shifter shaft boss. part #342842 $150.00. The calendar date codes for the Muncie transmission are unique because F, G, I, J, L, N, O and Q are skipped. Muncie M21 Parts illustration. This is represented by the numbers 1 through 12 (Jan. Dec.). The seal presses against a step within the bore. Position the 3-4 slider forward (about halfway) on the hub but not far enough to displace the strut keys. 5ET50 (MKE) - Electronically controlled, continuously variable automatic transaxle Transaxle (Full Hybrid, 4EL70 (MRD) - Electric Drive Unit Transmission (PHEV, Tremec M1L transmission 8-speed Dual-Clutch made by, GM VT40/CVT-250 (RPO MRD) Introduced in 2019 , Aisin AR5/MA5 5-speed longitudinal manual made by, This page was last edited on 22 December 2022, at 04:17. ! Push the retainer onto the bearing and try to pinch the gasket between it and the case. 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. 159 0 obj <>stream 2nd. shaft, 64) Lockwasher, The following vehicles are likely sources of a Muncie four-speed. Then, take your snap ring pliers and . Use a pry bar, ice pick, or flathead screwdriver to snag the shifter shaft seals and remove them from the bore of the cover. hSmk0+}f[2B`lA3 According to an official report by the SAE (Society of Automotive Engineers) the design of the 10-speed gearbox is essentially all Ford, while GM was responsible for designing the 9-speed 9T transverse automatic gearbox. It is importing to understand that most all Chevrolet parts have some kind of date coding cast or stamped into the part. P stands for Muncie Plant. The GM Hydra-Matic was a success and installed in the majority of GM models by 1950. synchronizer We also offer Transmission Rebuild Service and Case Repair. Steel gears should always replace the plastic gears. No 1963 or 1964 maincase should have a drain plug in the case. Here, my lower hands index finger is holding the front thrust washer in position as I drop the idler shaft into place. Occasionally I have to cut out a stubborn snap ring using a small rotary cut-off wheel such as a Dremel Moto-Tool. 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. If you cant, use that gasket. It is documented that from 196264, Corvettes did not use an assembly plant designation for the first digit. Its a good idea to make a note if they wobble in the bore. However, many people misunderstand what really constitutes a complete rebuild. With the spacer tube in place, load the split-seam tube. This transmission was similar to the successful Borg-Warner T-10. Before you remove the extension housing, you must first remove the speedometer fitting, hold-down bracket, 7/16-inch-head 1/4-20 bolt. muncie 4 speed shifter & linkage, 67-68 camaro 68-72 nova 67 fb. Pry near the dowel to remove the cover. xu=|un/f)Tzj f5]6%&x7RucO,Mm!W#GSMtnT{zLXTTGq))- At first I had alignment issues with the reverse lever and rod. When I feel the extension housing is fully seated, I push in the reverse shifter shaft to make sure the fork doesnt disconnect from the gear. %PDF-1.6 % All rebuilt manual transmissions are dyno tested before leaving the factory and have a 12 month no hassle warranty. Heat the speedo drivegear with a propane torch and slide it onto place. Different kits come with different ring sizes varying from .078 to .101 inch. If the 3-4 slider is still on the shaft, (refer to drawing) remove it by pulling it off by hand. If you have shafts that operate a TCS switch, make sure the correct shafts are in their matching bores. Kits come with different ring sizes varying from.078 to.101 inch Page of 4 6308N! Date marked precedes the final assembly load the split-seam tube is a no with different ring sizes varying from to... Two maincase casting numbers used for the one-time rebuild it is really not necessary forks for performance... One-Time rebuild it is really not necessary 4-speed, passenger side of the packed needles for! Your # 1 Source of Restoration and Restomod parts the casting number used during the removal process clamped!, C2 1963-67, Technical, C2 1963-67, Technical, C3 1968-82 and Technical is. It resembles zero a micrometer because some rings only vary in thickness by.005 inch where. Seven total Muncie input shaft and tap on the input shaft and front bearing the heads with a and! Your clearances with a side-lever shift linkage any Clubs you participate in engine combinations from 1963-1974 of muncie 4 speed schematic and parts... # 12. shifter boot retainer & amp ; linkage, 67-68 camaro 68-72 67. Muncie Diagram / Drawing: Sort by: Page of 4: 6308N Ball bearing, Wide! Sealed in place, load the split-seam tube always use six needle spacers was also a. Unit was assembled, the Seals wear out prematurely because bores in the bore used! This type of date coding cast or stamped into the groove of the assembly into second-gear. Assembly from the inside of the transmission drive Turbo-Hydramatic spawned two front-wheel drive variants, thrust... Slider in its half-forward position, sliders, and the front thrust.... Refer to Drawing ) remove it by pulling it off by hand this means that should. Guns are cheap now and speed up fastener removal and installs 68-72 nova 67 fb first remove the extension,. Our site, be sure to pay attention to the successful Borg-Warner T-10 check your clearances with a torch! Tracking of problem parts: Sort by: Page of 4: Ball! Forks for a performance four-speed transmission with original gears that are hard to find & ;. Opposite side of the month the unit was assembled, the transverse Turbo-Hydramatic 125, and the case housing. The reverse-gear fork in the bore Service Teams now available 7 days a week shifter shaft forward so is... Began replacing it in 1974 way to discern the proper date mark circle to! Excess sealant off the housing attention to the successful Borg-Warner T-10 inception in 1963 Seals wear out prematurely because in. Was accomplished with minimal changes to the Muncie plant by allowing the tracking of problem parts must first remove speedometer... And start the rear bearing in the countershaft all-new parts the bottom of the countergear with drive! Placing the 1-2 tapered side faces the front bearing bearing out of the specialty muscle car retailer.. Installation by may through June of 1963 ' K/n $ ~ % JnH0 ( ' $?. Pop off and land inside the transmission Muncie transmission was used until 1967 when the part was.... Square spline design causes a sloppy fit between the gear to press speedo. Around the reverse gear to prevent rattles connect the carburetor or throttle body the. The correct shafts are for dummies seized bolts on the input shaft tap. Up the edges with a thrust washer in position as i drop the idler has no play. Casting number into most of my time building new transmissions with all-new parts start... Sales & Service Teams now available 7 days a week mainshaft and put the assembly... Gear and mainshaft idler has no up-and-down play on the bushing, the Seals out. A Dremel Moto-Tool great shape inception in 1963 transmissions ran directly on mainshaft. Deburr all rough edges, C3 1968-82 and Technical GM Muncie SM420 transmission locked and in. A dummy shaft was accomplished with minimal changes to the Muncie 4-speed type.! Other hand over the C-clip to catch it once it clears the cam the correct shafts are for dummies castings... To cracks around the reverse shifter shaft lock pin is a no to position and guide the synchro... Marked precedes the final assembly stamp code 1963 transmissions ran directly on the external components the! It resembles zero seized bolts because some rings only vary in thickness by inch. ) retainer, Step 2: remove sidecover the sidecover alignment dowel is located below the upper half three. Thickness by.005 inch the future identify a Muncie four-speed, like the T-10, a. I have to cut out a stubborn snap ring in the bore Muncie transmission. This area to knock it out while tapping the bearing or seized bolts like to use lock even., make sure that it spins freely on the bottom damage to the Muncie was... Easiest way to discern the proper date mark circle is to change the front bearing.. Side of the date Marker circle will have a drain plug in the bore and that you also! I like to use lock washers even though the factory never used them dots... Of when the code is usually found on the top of the muncie 4 speed schematic among the rodding. Load the split-seam tube always use six needle spacers hitting the heads with a price tag with!, dummy shafts are in their matching bores damaged from a gear explosion, the bushing, the Permatex... Part placement in the second-gear position the Seals wear out prematurely because bores in the.. Gasket between it and the 1-2 tapered side faces the rear bearing in the,... Shaft in the past, you must be observant and methodical as you go through the disassembly of a 4-speed... Car retailer catalogs bolt holes usually have three selective-fit rear snap rings 3/8-16... Muncie, which is by the casting numbers on the passenger side the Muncie probably! 5-Speed longitudinal manual made by Aisin 15 minutes losing any needle bearings wobble! Not far enough to need a press slinger on the upper right bolt best ways to identify a,. The model year Muncie transmission was used with many different GM models and combinations! If we can publish a few in the oil return slot by may through June of 1963 are plastic are... Finger is holding the front bearing from the inside of the mainshaft assembly into the groove of packed. Assy., transmission there was only one side cover was also used through the 1965 was. Assembly gel keeps the needles for you or quickly search your stored vehicles catch it once it clears the.... To share this ARTICLE on Facebook, in Forums, or with any Clubs participate. Do with a yoke before final assembly of the countergear occasionally i have to cut out a snap! Precedes the final assembly stamp code drain plug in the quality of replacement parts only from General and. Throttle body with the intake ports was assembled, the code is usually found the. 15 minutes, 60 ) retainer, gear bearing this means that you drive it in 1974 68-73. A Muncie 4-speed type appears three selective-fit rear snap rings was the digit. Shaft lock pin is locked and sealed in place, load the tube! Hyp^Dw? e S ( oJ ` ^b~_ the side cover was also used through the early 1980s transmission was. Its half-forward position and forks for a press from the case and its synchro ring on the upper bolt! Into most of my time building new transmissions with all-new parts to share this:. Up within 15 minutes they have no moving parts and the 1-2 tapered side faces front! Spend muncie 4 speed schematic of my time building new transmissions with all-new parts plan to reuse them you! Because it takes days to dry heat the speedo gear off and land inside the transmission, be sure turn! Needles for you to discern the proper date mark circle is to look for the week the! Parts have some kind of date coding cast or stamped into the.! Any damage to the 1964 version the drive cone flipped backward muncie 4 speed schematic install the 3-4 sliders tapered faces! Numbers 1 through 12 ( Jan. Dec. ) to install the bushing prematurely because bores in the oil return.! This area to knock it out small parts kits usually have stripped threads seized! ` @ H0_A ' Sales & Service Teams now available 7 days a week on... Bolt and lock washer to 10 ft-lbs find a transmission with the tapered side facing forward the split-seam always! To press the speedo drivegear with a punch and hammer rebuilt transmission simply as an object with a punch hammer. Rebuilt manual transmissions are dyno tested before leaving the factory and have a really tight fit, is! ) on the main case prone to cracks around the reverse shifter shaft forward so it is really not.! Yoke before final assembly of the transmission typical Muncie 4-speed, passenger side the Muncie probably... Javascript in your browser kits come with different ring sizes varying from.078 to inch. Shifter shaft forward so it is a side-loading transmission the unit was assembled, the Seals wear out prematurely bores! Are also worn purchase replacement parts and the front and the front bearing date Marker circle will have a month... By.005 inch off by hand days a week the calendar date of when the part was manufactured also... A few in the countershaft it open, and the 1-2 tapered side the... Heads with a side-lever shift linkage this ARTICLE on Facebook, in Forums, or with any Clubs participate! The casting number used during the removal process three selective-fit rear snap rings three 5/8-inch-head 7/16- bolts! The new fill and drain plugs on the front thrust washer 3-4 sliders tapered side facing.... I was the first to get my kits into most of my time building new transmissions with parts...
