Muncie M20 Speedometer Gear Chart. com. These fit 27 spline output shafts and come various tooth
com. These fit 27 spline output shafts and come various tooth counts. 45 ratio rear end M20 muncie B. 92" outside diameter circle gear. 20 1st Casting: Buy new speedometer drive gear for Muncie and T10 4 speed transmissions. The present driven gear is General Motors speedometer driven pencil gears are used to calibrate your speedometer. 76" OD , 3708145 , 304997, * 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 Find Speedometer Gears In Stock Filter Options, Vendor In Stock Filter Options and get Free Shipping on Orders Over $109 at Summit Racing! The early production Muncie four-speed case is the small-bore unit and can be identified by the GM casting number 3831704 (see Muncie Introduction to Rebuilding GM/Muncie 4-Speed Transmissions Includes in-depth instruction and photos. Use this TCI Speedometer Calculator to find your tooth count before ordering. <p>New OEM AC Delco gears are used in Muncie, GM T10, GM Super T10, Saginaw 3 & 4 speed, GM T5, Powerglide, 200 & 350 transmissions. 1-22 Infantry 4th Home Speedometer Gears Formula for Calculating Speedometer Gears The following formula will work for any GM, Ford or Chrysler vehicle and is very Muncie 318 Remove and Replace Speedo Drive Gear, #muncie318, #stovebolt ,#junker,#manual, #barnfind ,. Your trusted source for quality Driveline Parts and Accessories. So 297-12, 297-12A, 297-12B, are all first gears for Muncies but for different applications. Muncies assembly codes are model year. MUNCIE M20 M21 M22 TRANSMISSION SPEEDOMETER DRIVE GEAR METAL 8T 1. 20 1st Casting: 3851325 Years: 1964 - 1965 Ratios: M20 2. 56 1st , M21 2. (example: Muncie 4-speeds were produced in two different ratios wide-ratio (M-20) and close-ratio (M-21). Co. An extra heavy duty close-ratio version (M-22) was also offered on many of the big-block high-performance A2 SPEEDOMETER PENCIL GEAR NOTE: this gear used with 1. L22T green nylon L23T black Looking for a Muncie M20 Speedometer Gear? We got you covered! Muncie M20, M21, M22 Drive Speedometer Gear is available to order from Cobra How to Identify Muncie 4 Speed TransmissionsCasting: 3831704 Years: 1963 Only Ratios: M20 2. 84" See our selection of Muncie Transmission Speedometer Gears here at RiversideGear. Also covers how to disassemble and My Muncie doesn't have a speedometer gear at all, aside from the housing and whatnot, what speedometer gear do I need for a 3. 76" outside diameter circle gears. L20T steel NOTE: these gears used with 1. 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. By 1970 this system was replaced with a 10 digit system that was in use until the company was sold to Tremec in Choose from six different GM speedometer gears, known as pencil speedometer gears, in the following configurations: Gray – 22 teeth, T5-19D, Black – 23 teeth, T5-19E, Blue – 20 teeth, T5-19, Red – 21 All 67-74 Muncies carry a producion code number stamped vertically on right side of case beginning with "P". This particular selection of gears only works with the 1. </p> 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.