Tci Speedometer Gear Calculator, Use this handy .

Tci Speedometer Gear Calculator, 55) • Tire size (i. Dec 16, 2023 · Calculate the number of teeth needed on the speedometer gear based on vehicle speed, drive gear teeth and desired speedometer reading. Speedo Gear Selection Measurements needed: • # of output shaft drive teeth (But how?) • Axle ratio (i. To determine the correct gear ratio of the speedometer for your car, use the following formula to calculate the number of teeth on the driven gear (round to the nearest available gear): Use the following formula to calculate "tire revolutions per mile" for the formula above: Sep 24, 2024 · TCI Auto Speedometer Gear Calculator - TCI® Auto Use this TCI Auto Speedometer Gear Calculator Formula for any GM, Ford or Chrysler vehicle. Use this handy Calculate Rear End Gear Ratio: Enter the tire diameter in inches, the rpm’s of the engine at entered speed as indicated by your speedometer in mph. Use the formula, example and FAQs to understand and apply this tool in automotive applications. So you're dramatically changing your tire size? Swapping in a different gearset? This is more than likely going to throw off your speedometer. A vehicle uses the speedometer drive gear to estimate its speed based on the rotations of its tires. Are you looking TCI Auto Stall Speed Charts? Use this Stall Speed Chart guide to help answer your questions. They consist of a small "driven" gear that meshes with a larger "drive gear" installed onto the transmission output shaft. Here is a list of common transmissions with their drive and driven gear teeth numbers Input Data: To use the calculator, you'll need to know the tire size, gear ratio, and the number of teeth on the existing speedometer gear. This is particularly crucial after modifications to the vehicle’s transmission, tire size, or differential gear ratio, as these changes can affect the speedometer’s readings. Find the correct speedometer driven gear size with our speedometer gear recalibration calculator, plus learn the formulas to calculate it. Use the Tire Height Speedometer Driven Gear Calculator Driven gear tooth count = Drive Gear tooth count x Axle Gear Ratio x Drive Tire Revolutions per Mile (or 20168 / Drive Tire Diameter) / 1001 Calculator Instructions This calculator provides the necessary information needed in order to determine what transmission speedometer gear is needed in order to properly calibrate a speedometer. This is very useful when there is no established baseline from which to work from such as replacing a transmission in a vehicle that was purchased without a drive line! A Speedometer Gear Calculator is a tool used by automobile enthusiasts, mechanics, and professionals to ensure the accuracy of a vehicle’s speedometer. Home Speedometer Gears Formula for Calculating Speedometer Gears The following formula will work for any GM, Ford or Chrysler vehicle and is very useful when there is no established baseline from which to work from such as replacing a transmission in a vehicle that was purchased without a drive line. This calculator is for a 1:1 final drive ratio. This method is purely calculations-based and you should always check your manufacturers specifications. Calculator for the right gear ratio on the speedometer. Check out the calculator on TCI’s webpage here: Speedometer Gear Calculator. Oct 3, 2024 · The Speedometer Gear Calculator is an essential tool for automotive enthusiasts, mechanics, and professionals involved in vehicle maintenance and customization. The following collection of technical information should provide a basic understanding of everything from learning ATF fluid capacities to Gear Ratio Calculations. It aids in accurately calculating the size or number of teeth needed on a speedometer's driven gear, based on the tire size and axle ratio of a vehicle. 3. This is very useful when there is no established baseline from which to work from such as replacing a transmission in a vehicle that was purchased without a drive line! This page provides a simple formula to aid in selecting the proper speedometer gears for your transmission application and charts showing the various gears available for each transmission. Most older GM speedometers are 1000. These numbers correspond to the number of revolutions the speedometer cable must make to register one mile on the speedometer. This ensures that the speedometer displays the correct speed, especially after Jun 16, 2023 · Speedometer gears are crucial components located inside the rear of your transmission. 225/60R16) The calculators on this page were borrowed with pride from Jim Roal and TCI Automotive. These gears play a pivotal role in measuring your vehicle's speed and ensuring your speedometer provides accurate readings. e. 5 should consider an electronic ratio adapter available on the aftermarket to maintain speedo accuracy (check with your local speedometer shop). The accompanying charts show what gears… The speedometer gear calculator assists you in calculating the size of the gear you need for your vehicle's speedometer. Use this TCI Auto Speedometer Gear Calculator Formula for any GM, Ford or Chrysler vehicle. Speedo Gear Calculator by Wallace Racing Todays date is 6/16/2026 Wallace Racing BACK to Calculators Speedo Gear Calculator At the bottom of the speedometer face, look for the numbers 940, 960, 1000, or 1020. Process: Enter the details into the calculator, and it will calculate the correct number of teeth needed on your speedometer gear for accurate speed readings. 5 or greater than 23. Can't Find what you're looking for Call or Email Us! 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