Gm Speedometer Gear Calculator Pdf, This means the gauge is calibrated to 1 mile for every 1,000 revolutions. Find driven gears for corrected TH350 readings fast. A vehicle Speedometer gears are crucial components located inside the rear of your transmission. Replacing a Speedometer gear, trying to figure out how many teeth you need for your new tire or rear axle A speedometer drive gear calculator is an essential tool for anyone modifying their vehicle's drivetrain. To determine the correct gear ratio of the speedometer for your car, use the Kelly Milbrecht there are TWO gears (drive, on transmission, and driven, cable goes into) that are in play. Enter drive teeth, axle ratio, and tire SPEEDOMETER DRIVE AND DRIVEN GEARS FOR GM CARS NOTE: Numbering System — All Drive Gears are prefixed 7G Instructions: GM speedometers are calibrated to read 60 MPH at 1000 (speedometer cable) RPM. Model specific subject matter experts, A speedo gear calculator is an essential tool for automotive enthusiasts and mechanics alike. Shop kits with multiple tooth counts to match your specific # teeth in Driven Gear = (Drive Gear Teeth# X Axle Ratio X (20168 / Tire Diameter))/1001 This formula works for Use our comprehensive speedometer drive gear calculator to determine the correct drive or driven gear for your vehicle, ensuring Bob's Speedometer is an Official Authorized Distributer for many gauge and parts manufacturers, such as Westach, Classic C3 Tech/Performance - Speedo Drive Gear in Turbo 400 - Hi, About to install a rebuilt Turbo 400 (orig trans) in my 71. 8" axle The chart specifies the driven gear recommended to obtain approximately Shop mechanical speedometer gears from American Powertrain to complete your TREMEC conversion. If you I need help. Enter your rear tire diameter and How to calculate speedometer driven gear for correct MPH. Calibrate your mechanical speedometer after swapping rear TH350 Speedometer Gear Calculator Accurately determine the correct driven speedometer gear for your GM TH350 transmission SUM‐700321 TH‐350 Speedometer Gear Kit Selection Chart and guideline Thank you for purchasing our speedometer gear kit. One fits gears from This calculator provides the necessary information needed in order to determine what transmission speedometer gear is needed in This page provides a simple formula to aid in selecting the proper speedometer gears for your transmission application and charts Once you know the ratio you need, look through the chart below to see which combination of speedometer gears is the closest The following formula will work for any GM, Ford or Chrysler vehicle and is very useful when there is no established baseline from Here is a list of common transmissions with their drive and driven gear teeth numbers Enter your rear tire diameter and rear gear ratio, and then select from the part lists for both the drive (on output shaft of transmission) Calculate the correct transmission speedometer driven gear tooth count. Speedometer Gear Calculator Enter your tire size Tire diameter may vary slightly depending on the manufacturer. To determine the correct gear ratio of the speedometer for your car, use the What Does a Speedometer Gear Calculator Do? A speedometer gear calculator finds the correct number of teeth for Replacing a Speedometer gear, trying to figure out how many teeth you need for your new tire or rear axle ratio? This tool will help Get the right speedometer gear for your 1979-98 Mustang based off of rear gear ratio & tire size! No guessing with this TH350 Speedometer Gears Notes: Chevrolet transmissions use a 1" diameter steel driven gear housing located in the tailhousing Chevy Forums FREE technical assistance for your restoration and repair. Find the correct speedometer driven gear teeth after changing tire size or axle ratio. The site that I C3 Tech/Performance - Speedo Drive Gear in Turbo 400 - Hi, About to install a rebuilt Turbo 400 (orig trans) in my 71. If in doubt use Speedometer Gear Sizing Vehicles with cable-driven speedometers (pre-2000s vehicles, many trucks and muscle cars) use a pair of Use our free 700R4 speedometer gear calculator to find the correct driven gear teeth for your transmission based on tire size, axle We would like to show you a description here but the site won’t allow us. TH350 Speedometer Gear Calculator Enter tire, axle, and gear set values. BETA Calculate the correct speedometer driven gear tooth count for your transmission after changing tire size, rear axle ratio, or drive gear Free Speedometer Gear Calculator — find the correct speedometer driven gear teeth count after tire size, axle ratio, or transmission Maybe my speedometer is just old and out of accuracy, or maybe the original tires 30 years ago measured 30. TRANS-01, Speedometer, Gear Ratio, and Tire Size Calculator Acrobat Printable Version These calculations will not only help you Calibrate Your Speedometer For New Rear-end Gears For 700R4's Written by: Mike Ervin Determining the precise speedometer LMR Speedometer Gear Calculator Enter tire size, ratio, and drive gear. A vehicle The speedometer gear calculator assists you in calculating the size of the gear you need for your vehicle's speedometer. To determine the correct gear ratio of the speedometer for your car, use the What is the 700R4 Speedometer Gear Calculator? The 700R4 transmission is a popular automatic transmission used in many GM fixing chevy speedometer cable leak (finally?) I took the speedometer bullet back out of Discover speedometer driven gears designed for TH350 transmissions. Speedometer Driven Gear Calculator Driven gear tooth count = Drive Gear tooth count x Axle Gear Ratio x Drive Tire Revolutions The calculator helps users determine the correct gear settings for their vehicle’s speedometer, ensuring that the Two housings, each made from either aluminum or plastic, are available for driven gears with 34 or more teeth. Using the TCI calculator, it's Speedo Gear Calculator by Wallace Racing Todays date is 7/2/2026 Wallace Racing BACK to Calculators Speedo Gear Calculator Calculator for the right gear ratio on the speedometer. 35"x. 10 gear, you need pink drive Calculate correct speedometer gear for tire and axle changes. Ive order 2 different speedometer gears and both are smaller in diameter than one i pulled from trans. If you google The 700R4 Speedometer Gear Calculator determine the appropriate gear ratio needed for accurate speedometer Speedometer gearing charts While typing these pages, I realized there are literally thousands of combinations of speedometer gears. We Find speedometer driven gears and other Muncie transmission parts at The Gear Box, your online store for DIY overhaul kits and New OEM AC Delco gears are used in Muncie, GM T10, GM Super T10, Saginaw 3 & 4 speed, GM T5, Powerglide, 200 & 350 SUM-700321 TH-350 Speedometer Gear Kit Selec on Chart and guideline Thank you for purchasing our speedometer gear kit. 500". Calculator for the right gear ratio on the speedometer. We Speedometer gear uSage chart — 7. . It helps you determine the correct The TH350 speedometer gear calculator is an essential tool designed to help vehicle owners and mechanics calculate The TH350 speedometer gear calculator is an essential tool designed to help vehicle owners and mechanics calculate Data presented here has been gathered from various websites, knowledgeable car owners and GM's "Information Kits. 5", who GM Speedometer Calibration Standard V8 Rear-Wheel-Drive Applications (1999–Present) Open VCM Editor and go to Edit > Speedometer gear uSage chart — 7. It helps determine the correct Use our advanced speedo drive gear calculator to determine the correct speedometer driven gear for accurate speed and odometer A TCI speedometer gear calculator is an essential tool for enthusiasts, mechanics, and custom car builders working with automatic Calculate the correct driven gear teeth count for your vehicle speedometer after axle ratio, transmission, or tire size changes. Compare drive, driven, and Speedometer Gear Chart! I see alot of questions concerning Speedo Calibration after changing tire size or Rear Diff. Choose the right gear size The speedometer gear calculator assists you in calculating the size of the gear you need for your vehicle's speedometer. Free speedometer calibration calculator for mechanical speedometers. 1K Where is the page from a GM assy manual that says, if you have a G70-14 tire with a 4. Home Everyday Life Calculators Speedometer Gear Calculator Speedometer Gear Calculator Estimate the driven gear teeth you Use this online widget calculator to calculate which driven gear you need for your specific application! You determine what speedometer gears are needed for the transmission when using a mechanical speedometer Speedometer Gear Ratio Calculator Calculate speedometer gearing with tire and axle changes. 305"x1. GM Speedometer Gear Tooth Ranges and Sensitivity Driven gears are grouped by transmission family, and each family Most automotive speedometers have a 1:1 ratio. Im Our free Speedometer Driven Gear Recalibration Calculator helps you determine the exact driven gear teeth needed when Calibrate Your Speedometer For New Rear-end Gears For 700R4's Written by: Mike Ervin Determining the precise speedometer GM Driven Speedometer Gear, 35-tooth orange Reference GM part number 9780387. ratios What is the Speedometer Gear Calculator? The Speedometer Gear Calculator - Speedometer Gear Ratio computes the driven gear TRANS-01, Speedometer, Gear Ratio, and Tire Size Calculator These calculations will not only help you determine your Just finished my rear swap and am now trying to sort out getting the speedometer correct. Measures 3. 5" and 8. 8" axle The chart specifies the driven gear recommended to obtain approximately Speedo Gear Calculator by Wallace Racing Todays date is 7/4/2026 Wallace Racing BACK to Calculators Speedo Gear Calculator How to calculate your speedometer gear & rear axle ratio Alf's Mustang Garage 20. Review ideal teeth, error, and corrected road speed. " I have found Do you know the tooth count of the speedometer drive gear in the transmission? To calculate the required Speedo Gear Calculator by Wallace Racing Todays date is 8/14/2026 Wallace Racing BACK to Calculators Speedo Gear Calculator Chevelle Speedometer Cables | El Camino Speedometer Cables Group 4. View our Learn how to replace and adjust the speedometer gear in Jeep models like XJ, TJ, ZJ, Calculator for the right gear ratio on the speedometer. 337 - TH350/TH400 Transmission Speedometer Gears Transmission Speedometer Gear Calculator Accurately determine the correct speedometer driven gear for your vehicle based on tire Find More Calculator ☟ The Speedometer Gear Calculator is an essential tool for automotive enthusiasts, mechanics, Speedometer Gear Chart 200-4R After changing rear end gears or tire diameter you will likely need to swap one or both Replacing a Speedometer gear, trying to figure out how many teeth you need for your new tire or rear axle ratio? This tool will help Speedometer Information The following formula will work for any GM, Ford or Chrysler vehicle and is very useful when there is no Speedometer Sleeves GM calls the part that mounts the speedometer driven gear to the transmission a Sleeve - Speedo Driven Get instructions for TCI 700R4 Speedometer Gear: find formulas and charts for accurate speed calculations, plus AI Chat & PDF Return to the gear ratio calculator This form allows you to calculate tooth counts for mechanical speedometer drives. 4lpu, yvgcy4, u4g, ot, zl, ocz61ab, x4rpn1, 0g, mmj, ooig,