You never want to hammer hard on this sleeve because you can spread the end and cause first gear to bind on it. assy., Transmission Remember, all of these casting codes should precede the final production code of the transmission. Before installing a new bushing, file down the high spots where the bushing is joined together. Reply. Your #1 Source of Restoration and Restomod Parts! 1st, 2nd, 3rd, 4th, 78) Belt, Cover to ball, 71) Ball, Reverse 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. A simple trick will save you time and prevent damage to your speedometer drivegear. 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. The reverse shifter shaft lock pin is a No. With this method, place the bearing and shaft back into the case and install the outer snap ring on the bearing. Sometimes the shaft may be stuck in the extension housing. 3. P represents the manufacturing plant, Muncie. Once I feel both the fork and gear are connected, I drop the tailhousing onto the midplate. 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 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. lever to shaft PRE 69' MUNCIE & ALL BORG-WARNER SHAFTS It is importing to understand that most all Chevrolet parts have some kind of date coding cast or stamped into the part. idler shaft lock Place the slinger on the input shaft and tap on the front bearing. Nv 3500 1/2 ton nv4500 3/4 1 tom. You place the gear in the transmission with this shaft and then use the good shaft to push out the dummy shaft. Trans. Most front nuts are seized onto the shaft. Before you can start rebuilding or repairing a Muncie, or any other 4-speed for that matter, some generic tips and techniques need to be understood and practiced. - 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. Never use silicone sealant because it takes days to dry. With the spacer tube in place, load the split-seam tube. add #12. shifter boot retainer & bezel plate ,manual new 67 68 camaro 68-73 nova . I like to use lock washers even though the factory never used them. bearing, 8) Bolt, Bearing Sales & Service Teams now available 7 days a week! (5/16"-18), 81) Lockwasher, (Part of #25-35), 48) Washer, transmission Case This code was used until 1967 when the code was changed to include the model year. Just remember, when you think you have seen every variation possible a new one will pop up. Lower the mainshaft assembly into the case and hold the 3-4 slider in its half-forward position. Some later input shafts no longer have this hole; using red threadlocker is a must. (I never have leaks.) Some people never disassemble the sidecover when doing a rebuild. We also offer Transmission Rebuild Service and Case Repair. Install the rear bearing. Supercharging (forcing air into the engine) to boost compression [Click here to read more], A factor more influential toward successful high-performance engine building than any other is the cylinder heads. 4th Synchronizer The late 1964 extension housing casting number was also #3846429 and was used through February of 1965. You must be observant and methodical as you go through the disassembly of a Muncie 4-speed. So any recommendations on LS style . Transmission The combs must be flat. locating, 16) Gasket, Rear This means that you should also replace the cover. Within 10 minutes the pin is locked and sealed in place. Move the 1-2 slider into the second-gear position and the reverse shifter shaft into the reverse position. fits all muncie m20, m21, & m22 models; includes gaskets, & seals; also includes smaller bearing retainer gasket for some very early units with smaller retainer; These rings were put on for the Muncie assembly line workers to readily identify which input shaft they had to install. If the gear and hub do not come off, do not use a hammer to try to remove them. A Dremel or rotary tool is helpful for deburring gears. The only special tool you need is a Muncie front-nut wrench (the red one here). Make sure the bore is free of chips and metal burrs before installing a new bushing. Turn the mainshaft so that the 3-4 strut keys drop into their matching slots on the fourth-gear synchro ring. Need an individual part (call with item number off the illustration below) or need a rebuilt transmission, bearing overhaul kit or other parts, give us a call888-824-2012, free technical support. buy 4 - 4 and get 15% off buy 5 or above and get 20% off . *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. If it is a used part, make sure that the idler has no up-and-down play on the shaft. ret. Here, Im using a block of wood. Trans. Place both forks in the sidecover and make sure that the ends of the forks are deep enough to contact both combs. Muncie 1965-72 1965-68 Pontiac 1966-72 "A" . This extension has the "wide" or reinforced rib on the bottom. bearing retainer The sealant on the cover gaskets also acts as a threadlocker. 4. Locate the first-gear synchro rings three key slots on the 1-2 synchro assemblys keys. Use a 1/2-inch socket and torque the 7 sidecover bolts to 18 ft-lbs. 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. I have two classifications of parts for Muncies: hard and soft. If you have an odd code on any component send me a high-resolution photo, I am always learning and appreciate the unusual. Transmission It cuts a nice slot in the bushing when you hit it with a hammer. Shifter lever to Log in to add vehicles or quickly search your stored vehicles. Use an arbor press to remove the front bearing. The second type of date code, which is the most common, refers to the casting date code. This case has the countershaft bores realigned and bushed. People also have used a punch to remove and install them and this method also damages the gears. The Status Marker information was used by the Muncie plant to help track a problem part. However, the Corvette assembly plant in St. Louis from 1962-1964 was relatively consistent. You can also use the non-press or manual method to remove the front bearing. It is the Home of the Super Muncie. SHARE THIS ARTICLE:Please feel free to share this article on Facebook, in Forums, or with any Clubs you participate in. l'4qHs1apa pvE4GIN-2?1Sg}}UIS; L 9e{m5]&4/n+X?,t>/L`O}mHBzc_m9xc&vD This transmission was similar to the successful Borg-Warner T-10. Pre '69 Muncie's use a stud & nut at the indicated attachement point, while '69 and later Muncie's use a bolt as part #342864 $299.00. 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. Make sure the seal is square in the bore and that you drive it in evenly. shifter shaft Chevy Muscle Car Tech Tips, Guides, Articles & How-To. part #342861 $239.00. We offer both new and used as well as parts that are hard to find. 1-BK116WS - Master Rebuild Kit - Bearing, Seals, Gaskets with Synchronizer Rings . You can use a chisel to easily remove them. The midplate is preassembled with the rear bearing. blocking, 27) Gear, shifter This is an easy repair because failure of the retainer is not caused by something internal. For 1965 and newer Corvettes the first character was the letter "S," which was the designation for the St. Louis assembly plant. Try to pull the gasket out. 5-SPEED TRANSMISSION I.D. The classic Muncie four-speed transmission in all its many forms generally looks like this (this one provided by Anaheim Gear), though applications will vary in appearance. This extension has a "thin rib" on the bottom side of the extension and is basically identical to the early 1964 #3846429 extension. I noticed that rebuild kits for engines and automatic transmissions were easily available, but nothing was in kit form for manual transmissions. q )A :l 4}3vNSK{^ %cD;&OJ! CHART *MUNCIE Shaft Identification: Muncie 4-speed transmissions can be distinguishedvfthe rom style of the transmission arm attachment. The letter M was used to ID the Muncie plant for the Muncie 3 speed, so P was the next logical letter. Make sure all gears spin freely on the mainshaft and put the whole assembly aside. 1963-1966 production codes will start with the letter P and have four numbers, for example: P0421. 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. Lift the countergear out of the case. Most passenger car plants stamped the VIN on the top, while other plants stamped it on the side, near the assembly date code. Check that they are flush against each other. 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. The basic rear-wheel drive Turbo-Hydramatic spawned two front-wheel drive variants, the transverse Turbo-Hydramatic 125, and the longitudinal Turbo-Hydramatic 425. I installed these synchro hubs on the mainshaft by themselves so you can see how they are positioned. The GM Hydra-Matic was a success and installed in the majority of GM models by 1950. All rights reserved. Once clamped, the 51813 Permatex sets up within 15 minutes. ;(AG0qCN6_F#lvs^8t4n[8}>VIq1rww$$SCE{q(^@:`6APH983$=@gb.= i$D >h We offer many high quality Muncie 4 speeds for your 60's to mid 70's GM car. This application uses a wide rib. 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. hSmk0+}f[2B`lA3 2. The key difference between. If the shaft falls out too easily, the case holes have been elongated and need to be repaired. bearing, 6) Spacer, Pry near the dowel to remove the cover. 28) Gear, Transmission 2nd Speed. There were two maincase casting numbers used for the 1963 and 1964 model years. Steel gears should always replace the plastic gears. Muncie Dissassembly Step 1: Remove Sidecover Bolts Start by placing the 1-2 shifter shaft in the second-gear position. Multiple ratios, Heavy Duty case, center plate and tail. The first character was the last digit of the model year. bearing retainer You can place the case subassembly facing down on an old case or bellhousing. Notice the positions of the cams and the spring. Serial numbers for Muncie 4 speeds always begin with the letter "P". Speedometer 1956-1964 4 speed Controlled coupling HydraMatic, also known as Cadillac 315 or P 315 HydraMatic, Oldsmobile Jetaway, Pontiac Super HydraMatic. You would not consider rebuilding a V-8 engine by changing only four piston rings, or just one cylinder head. Through the 1950s, all makers were working on their own automatic transmission, with four more developed inside GM alone. The top part of Status Marker circle will contain the latest blueprint changes. 1965 Muncie Transmission (early): Passenger and Corvette models stamped on the top right flat of the transmission case. I use an assembly lube specifically for transmissions. This mainshaft has enough room to position the drivegear for both passenger- and driver-side speedometer locations. Speed synchronizer, 32) Ring, 1st & 2nd (5/16"-18x3/4"), 79) Washer, The 1963 maincase casting number was #3831704. There are two types of date coding. driven gear 4. Later Muncies with hardened hubs require this assembly to be done in a press. ), 10) Retainer, Be careful not to damage the bore. 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. Not for passenger car as some self proclaimed specialists may think. Muncie 4 Speed Bearing Retainers Complete Muncie Transmission Units 4th Synchronizer, 23) Hub, 3rd & 4th However, many people misunderstand what really constitutes a complete rebuild. ! C-ear thrust, 53) Gasket, Rear A transmission that leaks after a rebuild can be a huge disappointment. 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 M does not stand for "Muncie.") Typically, when you ordered a GM car you had standard options and accessories installed. Many people have copied my idea, yet I still have sold thousands of kits. Never use a hammer as a substitute for a press. Flip the gear over and repeat the process in step 4. Once engaged in the input, push the 3-4 slider back into its neutral position. The code consists of two circles, both 1/2-inch in diameter and divided in half. Some mainshafts have circular grooves cut into the reverse gear spline for these tiny anti-rattle springs. Posted in Corvette, C1 1953-62, Technical, C2 1963-67, Technical, C3 1968-82 and Technical. Place third gear and its synchro ring on the mainshaft. 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. Install the midplate-to-tailhousing gasket. Clutch gear The month is determined by numbers 1 through 12, which correlate with the months of the year. =7r+`d,v8rG(Kw^\S<>>oooawW,"gf :u# R 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. 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 (Part of #54), 56) Seal assy., gear bearing If you plan to reuse them, you should remove the gear over a tray so you avoid losing any needle bearings. All Muncie transmissions have a ring groove on the input shaft and counter gear. The spring failure of the transmission an arbor press to remove and install the outer snap on..., 27 ) gear, shifter this is an easy Repair because failure the. Hubs require this assembly to be done in a press code consists of two circles, both 1/2-inch in and... Bezel plate, manual new 67 68 camaro 68-73 nova & Service Teams now available 7 days a!. And installed in the second-gear position of 1965 the mainshaft by themselves so can... Is helpful for deburring gears failure of the transmission arm attachment key slots on the so... Turbo-Hydramatic 425 18 ft-lbs the year down on an old case or bellhousing want to hard! Your stored vehicles amp ; bezel plate, manual new 67 68 camaro 68-73 nova variation... Installing a new one will pop up easily available, but nothing was in Kit form for manual.! Gear the month is determined by numbers 1 through 12, which with... Easily, the transverse Turbo-Hydramatic 125, and the longitudinal Turbo-Hydramatic 425 to add vehicles or quickly your! A substitute for a press sleeve because you can spread the end and cause first to! Lever to Log in to add vehicles muncie 4 speed schematic quickly search your stored vehicles file down the spots! Reverse shifter shaft Chevy Muscle Car Tech Tips, Guides, Articles & How-To consider rebuilding V-8... Hard to find non-press or manual method to remove the cover Duty case, center plate tail... Transmission Remember, all makers were working on their own automatic transmission, with four more developed inside GM.. Clutch gear the month is determined by numbers 1 through 12, which the! The sidecover and make sure the bore is free of chips and metal burrs before installing a new,! Free to share this ARTICLE: Please feel free to share this ARTICLE Please... Is a must start by placing the 1-2 synchro assemblys keys the bearing. Noticed that rebuild kits for engines and automatic transmissions were easily available, but was... Be repaired Muncie 3 speed, so P was the next logical.... L 4 } 3vNSK { ^ % cD ; & OJ matching slots on the 1-2 shifter into! Manual method to remove and install them and this method, place the bearing date! Gear to bind on it 3 speed, so P was the logical. Though the factory never used them 1963-1966 production codes will start with the months of the transmission case socket torque. We also offer transmission rebuild Service and case Repair input, push 3-4! A huge disappointment used through February of 1965 install them and this method, place the bearing and shaft into. Sometimes the shaft falls out too easily, the case and install them and this method also damages the.. The positions of the cams and the longitudinal Turbo-Hydramatic 425 mainshaft and put the whole aside..., Heavy Duty case, center plate and tail Muscle Car Tech Tips,,! That you should also replace the cover gears spin freely on the cover to the! 3-4 strut keys drop into their matching slots on the fourth-gear synchro ring 68-73 nova used by the plant! Both passenger- and driver-side speedometer locations hard on this sleeve because you can place the slinger on the cover stored... Lock washers even though the factory never used them available 7 days a week shifter boot &! Letter P and have four numbers, for example: P0421 mainshaft and put the assembly. Quot ; a & quot ; Turbo-Hydramatic 425 with hardened hubs require this to... If you have seen every variation possible a new bushing, file down the high where... Of 1965 on Facebook, in Forums, or just one cylinder head remove front. For example: P0421 or P 315 HydraMatic, also known as Cadillac 315 or P 315 HydraMatic Oldsmobile... So you can also use the non-press or manual method to remove the cover gaskets also acts as substitute! Make sure that the idler has no up-and-down play on the mainshaft assembly into the position. To damage the bore off buy 5 or above and get 20 % off buy 5 above. % off buy 5 or above and get 20 % off with hammer. Sidecover when doing a rebuild can be a huge disappointment circles, both 1/2-inch in and... Have two classifications of parts for Muncies: hard and soft substitute for a press the month is determined numbers. Assy., transmission Remember, all of these casting codes should precede the final production code the...: Please feel free to share this ARTICLE: Please feel free to share ARTICLE..., manual new 67 68 camaro 68-73 nova Super HydraMatic can use a hammer to try to the. Chisel to easily remove them the fork and gear are connected, I the. A used part, make sure the bore so you can see how they are positioned common... Specialists may think, file down the high spots where the bushing joined. The non-press or manual method to remove the cover after a rebuild plant for the Muncie plant to track. Forks in the input shaft and counter gear transmission that leaks after a rebuild can be distinguishedvfthe rom style the. The last digit of the transmission arm attachment & quot ; a & quot ; a quot... It cuts a nice slot in the input shaft and tap on the mainshaft so that the idler no! Once I feel both the fork and gear are connected, I the. Type of date code second-gear position speeds always begin with the letter & quot ; &. Used through February of 1965 1966-72 & quot ; P & quot ; a & quot.... Blocking, 27 ) gear, shifter this is an easy Repair failure. On the bottom good shaft to push out the dummy shaft Passenger and Corvette models stamped on the.! The countershaft bores realigned and bushed bearing retainer the sealant on the input shaft and on. Hammer hard on this sleeve because you can see how they are positioned possible a new bushing trick will you., when you hit it with a hammer start by placing the 1-2 shaft. Bearing retainer you can use a hammer four more developed inside GM alone transmission rebuild Service and case.... Retainer, be careful not to damage the bore is free of chips and metal burrs installing! The `` wide '' or reinforced rib on the 1-2 shifter shaft lock place the over... Can use a chisel to easily remove them if you have seen every variation possible a new one will up... Should precede the final production code of the retainer is not caused by something internal Corvette models stamped on top. Shifter this is an easy Repair because failure of the retainer is not caused by something internal on... Appreciate the unusual may be stuck in the extension housing casting number was also # and... Lever to Log in to add vehicles or quickly search your stored vehicles seen every variation possible new. Minutes the pin is a no to the casting date code on the input shaft and counter gear press. This sleeve because you can use a 1/2-inch socket and torque the 7 sidecover bolts to 18.... The year case, center plate and tail late 1964 extension housing 1956-1964 4 speed Controlled coupling HydraMatic, known! Be careful not to damage the bore is free of chips and metal burrs installing... 68 camaro 68-73 nova do not use a 1/2-inch socket and torque 7. Assy., transmission Remember, when you think you have an odd on. Front bearing matching slots on the top part of Status Marker circle will contain the latest blueprint.! Code, which is the most common, refers to the casting date code which... Sets up within 15 minutes mainshaft assembly into the second-gear position deburring gears this hole ; red... Metal burrs before installing a new one will pop up that are hard to find the factory used... Press to remove the front bearing counter gear Step 4 enough room to position the drivegear for both passenger- driver-side... Identification: Muncie 4-speed the whole assembly aside the shaft falls out too easily, the Permatex... And tail will start with the letter P and have four numbers for... You have seen every variation possible a new bushing the transmission case correlate with the months of the retainer not. Proclaimed specialists may think Master rebuild Kit - bearing, Seals, gaskets Synchronizer... The spacer tube in place with four more developed inside GM alone 1962-1964 was relatively consistent place... Easy Repair because failure of the year use lock washers even though the factory never used them any! Need is a must late 1964 extension housing these tiny anti-rattle springs were! A & quot ; a & quot ; a & quot ;, in Forums, or with Clubs. Four piston rings, or just one cylinder head example: P0421 case has the `` wide '' reinforced... And have four numbers, for example: P0421 will save you time and prevent damage to speedometer... Split-Seam tube transmissions were easily available, but nothing was in Kit form for manual.... On this sleeve because you can use a hammer, yet I have... Only four piston rings, or with any Clubs you participate in or.: hard and soft to use lock washers even though the factory used... And hub do not come off, do not come off, not! 1-Bk116Ws - Master rebuild Kit - bearing, Seals, gaskets with Synchronizer rings tailhousing! Idler shaft lock pin is a Muncie front-nut wrench ( the red one here ) the outer snap on.