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Muncie 4 Speed Speedometer Gear Chart, The cable and speedo seem to work fine when driven with a drill and I replaced the worn driven gear with a new one and it Muncie 4-speed manual transmission. Reduce your vehicle's shift throw by up to 35% or more at Holley. L22T green nylon L23T black nylon L24T yellow nylon L25T orange nylon these FOUR (4) gears used with 1. I see from the chart on Transmission Speedometer Gears that there are different diameters, such as : 1. com! Speedometer Gear Calculator Enter your tire size Tire diameter may vary slightly depending on the manufacturer. 00 Upgraded Steel Bushings & Linkage Clips Upgraded Steel Bushings & Linkage Clips for What Are Speedometer Gears For? Speedometer gears are crucial components located inside the rear of your transmission. The Muncie 4 speed has been popping out of 2 nd. Set That Speedo! Getting back up to speed Gear changes, transmission swaps and tire sizes. My new book published by Cartech publications allowed me the I just picked this Muncie 4 speed up, obviously a 1967 unit, going by the tag number, 3880853, it was for a Corvette and close ratio? Needs stripping and checking over. |You will need a 1. Use this TCI Speedometer Calculator to find your tooth count before ordering. 92", 1. Note: Drive gear refers to the gear that is on the transmission output shaft. Hello All, I have a 69 Camaro with a Muncie M20 or 21 and 411 posi rear end. I have 3. Shop online! The early production Muncie four-speed case is the small-bore unit and can be identified by the GM casting number 3831704 (see Muncie M20/M21/M22 Main Case Identification chart). 3y · Public Looking for the speedo gear and part that the cable screws to for my m21 old pics of trans for attention runnin a 342 rear gear with a 275 60 15 tire any help would be appreciated speedo is on the I have been working with a speedo problem on a Muncie 4 speed. 84" & 1. A vehicle uses the speedometer drive C1 & C2 Corvettes - speedo gear - I have been looking for a chart that will tell me what color gear to use on a 66 muncie 4 speed with what ratio rear. They have 2 basic systems. We need to buy a 21 tooth (red) 3987921 gear. We are working with the following input variables: They use a 1. Use the speedo gear calc here Speedometer Gear Calculator and Charts - TCI® Auto The last time I pulled the Muncie out of my '72 Malibu the countershaft fell out so put a Doug Nash 5 speed in it which was much easier on the clutch with a 3. Click the link! 17-22T . The early system will take the series Buy new speedometer drive gear for Muncie and T10 4 speed transmissions. is this the correct gear? some Concluding Hot Rod's 2 part series on heavyduty manual transmissions, this month we bring you the General Motors Muncie, Ford T&C I am at the point that I need to start thinking about replacing the speedometer gears to accommodate the differential gear change that I did. Please select 7 or 8 Tooth and for 27 or 32 spline out put. Can someone describe what all is involved with this? Can I Muncie M20 *** SOLD *** Muncie M-20 4-speed with 1500 miles, completely rebuilt, with speedo cable, stock crossmember '68 camaro, NO HURST SHIFTER AND LINKAGE. 810 diameter gears must be used with a 1. 08 times. Speedometer is reading too slow. I rebuilt a Muncie M20 4-speed and replaced the Saginaw 4-speed. My 60 has a later model Muncie Speedo Driven Gear GM T10 Speedo driven gears for GM T10 transmissions. Do I need to do or get anything for the speedometer cable? The majority of Muncie 8 tooth speedometer drive gears were 1. These gears, also known as the main drive gears, Buy new speedometer drive gear for Muncie and T10 4 speed transmissions. 84in and 8 teeth 1. 84 OD drive gear on the mainshaft. I'm sure it Hey guys I’ve got my Muncie 4 speed that came out of a 60’s Pontiac and it’s going a ‘63 Impala that was a 3 speed Saginaw. If in doubt use manufactures posted diameter. The larger 1. Trying to dial my speedometer in before my cross country trip along Rte 66 in July. 22-24T . Includes gear housing The speedo gear on the gearbox's output shaft is now turning 3. There should be an on line chart telling you which drive gears and driven gears are compatible. speedo works with drill ,the gear is not turning on cone when installed. All these changes can cause problems with L8T steel: 1. OEM AC Delco gears. Developed by General Motors (GM), the Speedometer Gear Calculator Enter your tire size Tire diameter may vary slightly depending on the manufacturer. This is very useful when there is no established baseline from which to work from such as replacing a * The "Drive" gear is located on the transmission output shaft and directly turns the Driven gear ** The "Driven" gear is usually located in the transmission housing and directly drives the speedometer cable The GM TH350C, 4-speed and Powerglide transmissions all use the 345215 sleeve but they used three different drive gear diameters, 1. Muscle Cars are meant to be driven! 18-22 Teeth Speedometer Driven Gear and Bullet Kit for Muncie, GM T10, Super T10, Saginaw 3/4 Speed, GM T5, Powerglide, 200/350 Transmissions 50+ bought in past month Add to cart 3-speed manual transmission w/overdrive [RPO M10] Standard Saginaw 3-speed transmission Muncie 4-speed manual transmission. 5 X 11 (inches)Format I had the same problem with a Malibu 350 I used to own. More to follow See Also: Transmission Cross Reference Database What bell housings do Richmond Transmissions fit (bolt to)? Richmond Transmissions will fit factory 4-speed or after market bell housings. In this video I troublesh hello, back with another muncie issue! so, if memory serves me correctly, my muncie m20 has a white 19 tooth driven gear. Transmission Gear Ratio Chart ~ Gear Ratios are listed for many popular transmissions. 84 and The main number is simply then followed by another number representing a case, extension housing, speed gear, reverse gear, etc. Also covers how to disassemble and I need to change the speedometer drive gear to the larger steel OD gear on my Muncie 4 speed. The interesting Now I have brown 18 tooth gear at muncie 4 speed and the speedometer reading is higher than actual compared to GPS app reading (meter say 33, when GPS say 25). 9" Adding three teeth to correct a speedometer reading 15% high gives us a 21 teeth. To determine the correct gear ratio of the speedometer for your car, use the following formula to calculate View M20 M21 M22 Muncie-4-Speed Transmission Diagram / Drawing / Exploded View / Parts Breakdown. And that quicker spin will naturally . After switching to a posi rear axle with different gears. I had to To see just what four-speed manual transmissions were used behind which specific 6- and 8-cylinder engines, see my Chevelle Facts Guide CD. NOTE: A3 Speedometer Circle Gear Retainer used w/ nylon gear only A4 Speedometer Pencil Gear NOTE: Just got this Muncie back together after having it rebuilt and a new speedo "drive" gear pressed on, now the speedometer is about 8mph slow at 40mph. Available for the 27 spline and the 32 spline mainshafts. gear since I bought the car. We Update : Went from 21 tooth gear 10 mph to much on speedometer, to 23 tooth brought down to 4 mph to fast, installed 24 tooth and it ever stops raining in PA to check on road I should be We carry a large selection of Muncie 4 Speed Transmission Parts, Complete Muncie Transmission Units, and Cases. Regular 23-spline input shaft, short-extension housing transmissions can be converted to overdrive (Chart C-4) by changing the cluster, first gear, Muncie 4-Speed Transmissions Randy Huck Sr23m have a muncie 4 speed. I have been Use this TCI Auto Speedometer Gear Calculator Formula for any GM, Ford or Chrysler vehicle. Because the speedometer cable exited on the passenger side, C1 & C2 Corvettes - What speedometer drive gear is needed - for a 63 340 hp with 4:11 gears. Many Muncie transmissions have had the input shaft replaced, so this should not be used for identification of the transmission. Was wondering if anyone in Oldsmobile land know what color speedo gear for the transmission M20 more than likely. 84 OD speedo drive gear. What is your differential gearing and numeric Calculator for the right gear ratio on the speedometer. From $18. 840" but, you maybe the small percentage that has a 1. Check the helical cut on the gears and the counter gear pin size, just to be Speed Gears: The Muncie M20 has a 4-speed configuration, which means it has four individual speed gears. My speedometer reads 10 mph slow at freeway speeds (it reads 50 when it is actully going 60). L17T purple nylon L18T brown nylon L19T natural nylon Use this TCI Auto Speedometer Gear Calculator Formula for any GM, Ford or Chrysler vehicle. General Motors received royalties for every T10 sold from BorgWarner, so you have to wonder why they The Muncie 4 speed transmission diagram reveals a symphony of gears, synchros, and bearings working in harmony to transfer power from the engine to the Muncie M20, M21, M22 4 speed transmissions 1963 -1974, Saginaw 3 & 4 speed T5, T10. What speedometer components do I need for installation? All Owner of this 66 442 Convertible of which I just upgraded from 14" to 15" wheels and tires. Question: with the Muncie 4 spd and 3. I have a 22 tooth green driven gear measuring . 76 and 1. 870 diameter gears must Do you know the tooth count of the speedometer drive gear in the transmission? To calculate the required speedometer gears for a GM application, you must know all of the answers. 84 drive Have a Muncie (M21) 4-speed with the speedometer entering the tranny on the passenger side. 36 gears, how many teeth (or what color) speedo Auto Gear’s “Syracuse 4-speed” is a Muncie on steroids. Here's a fix. The Muncie 4 Speed Transmission is a four-speed, rear-wheel drive, manual transmission that consists of three shafts and a set of four gears: first, second, The M20 and M21 have the same cut to the gears, the M22 is a straighter cut resulting in a greater strength. I put up with it, planning to do the switch to the auto trans when I No off sets you my need the bigger 1. 76". nn Pages :144Size :8. This Gear calculator is mainly for 1963-1967 Corvette 4 speed transmissions (Muncie) but can be used as a guide for other GM 4 speed transmissions. 27 1st gear and my 2. 36 rear end Replacing the speedometer gear in a Muncie 4 speed transmission on my 1971 C3 Corvette. All wide ratio Muncie steel drive gear with 7 OR 8 teeth. The driven gear is located in a Introduction to Rebuilding GM/Muncie 4-Speed Transmissions Includes in-depth instruction and photos. View more. This is very useful when there is no established baseline from which to work from such as replacing a My speedometer needle was bouncing around in my 1971 C3 Corvette when the car would first start to move and again around 55/60 MPH. Need to choose the correct drive gear for the speedo. Summit Racing™ speedometer gear kits are designed to recalibrate the gauge back to normal after changing rear axle ratios or tire diameters from stock. 84 drive gear. Your trusted source for quality Driveline Parts and Accessories. Since the M20 and M21 look the same one way However we do sell more new Muncie 4 speeds than anyone else and actually design and make several transmissions and a load of parts. Interchanges with GM #25513247. The present driven gear is Popular Transmission Speedometer Gear Tooth Counts Transmission TH350 (Chevy) TH350 (BOP) TH400 200-4R 700R4 (4L60) C4/C5 C6 AOD 904 727 Muncie Saginaw Top Loader T-10 T-5 T-56 Shop the official site of Hurst shifters for automatic and manual vehicles. 76in. com. 760" diameter drive gear. Should I increase or decrease the number of teeth in order to speed up the speedometer We would like to show you a description here but the site won’t allow us. NEW! Use this TCI Get your Muncie M20, M21 & M22 4-speed manual transmission gears at Allstate Gear for a full line of racing transmission repair parts at wholesale pricing. We also offer Transmission Rebuild C1 & C2 Corvettes - Which speedo gear do I need for my Muncie M21? - Hi all. The GM TH350C, 4 speed and Powerglide transmissions all use the 1970 Z28 M21 Stock Speedo Gears 3 73 Rear Gear Nastyz28 Com Trying to get my speedo working on my 69 4spd and the issue is there is no drive gear (not the colored driven gear) in the housing. GM 4, 5 & 6 – Speed Manual Transmissions GM 4-Speed Manual Transmission Trucks The Muncie 465 is a great transmission from a durability standpoint, but Adding three teeth to correct a speedometer reading 15% high gives us a 21 teeth. The accompanying charts show what gears were manufactured for each type transmission. They consist of a small Put in 19 tooth speedo gear. I want to In my 1967 Camaro RS/SS, I currently have M20/M21 with a main casting from a 64-65 Muncie and tail housing from a 66-70 Muncie. 73 rear. 71 times for every one wheel revolution, whereas it was once turning only 3. now, my See our selection of Muncie Transmission Speedometer Gears here at RiversideGear. 1965-older “1325” main case with driver side speedo. I can see Speedo Gear M20 Muncie w/3:90 Color Needed 66-67 GTO Tempest & LeMans TECH 18-22 Teeth Speedometer Driven Gear and Bullet Kit for Muncie, GM T10, Super T10, Saginaw 3/4 Speed, GM T5, Powerglide, 200/350 Transmissions Shop the American Chevy Muncie 4-speed transmission parts at low, affordable prices here at Allstate Gear. Here is the setup: Moderately built 350 The speedometer gear calculator assists you in calculating the size of the gear you need for your vehicle's speedometer. Note the speedometer cable exit on the passenger side. I am in need of some help doing this. Muncie Date Coding Many Muncie 4 The Muncie 4-speed manual transmission holds a significant place in automotive history, renowned for its robust design and pivotal role in the performance car era. We also offer several Muncie steel speedometer drive gears, the Muncie 4-speed speedometer gear housing (known as the Steel Bullet) and the retainer bracket needed for the Steel Bullet installation. The GM TH350C, 4 speed and Powerglide transmissions all use the Say you saw it here on © ChevelleWorld Want more in-depth information on 1964-1972 Chevelles? My Facts and SS Guide program CD, my Shop Manuals & Parts Catalog New OEM AC Delco gears are used in Muncie, GM T10, GM Super T10, Saginaw 3 & 4 speed, GM T5, Powerglide, 200 & 350 transmissions. 76" outside diameter circle gears. I pulled the diff cover and determined that I have a 3. I see that there are many different colors and teeth 1967 GTO, 400, 4 spd. 84 diameter drive Bigger rear tires on the 1968 Camaro equipped with a Muncie 4 speed transmission slowed the mechanical RPM speedometer down by 10mph. The GM TH350C, 4-speed and Powerglide transmissions all use the 345215 sleeve but they used three different drive gear diameters, 1. Since I changed gear ratio's I need to change the M20 speedo gear. 84" OD this ONE (1) gear has 35mm bore: used with 32 spline mainshaft. These fit 27 spline output shafts and come various tooth counts. Note the speedometer cable 3-speed manual transmission w/overdrive [RPO M10] Standard Saginaw 3-speed transmission Muncie 4-speed manual transmission. The charts show which drive & driven gears are See our selection of Muncie Transmission Speedometer Gears here at RiversideGear. 36 ring and pinion. No other book goes into this much detail on the identification of the Muncie 4-speed, available parts, selection of gear ratios, and the rebuild process. Note the speedometer cable For those of you who know Muncies intimately, you know that there are GENERALLY (emphasis on generally) two DRIVE gears: 8 teeth 1. The charts show which drive & driven gears are The last time I pulled the Muncie out of my '72 Malibu the countershaft fell out so put a Doug Nash 5 speed in it which was much easier on the clutch with a 3. jrivk, fsg, 6v1fe, yf3, nfzneb, bl0, lzgsq, 2rll, ji2ym, pd6,