Speedometer Gear Calculator Ford, Ensure accurate speed and performance.

Speedometer Gear Calculator Ford, xls 1967 - 1973 Mercury Cougar (and Ford Mustang) Speedometer Gear Calculator Our free Speedometer Driven Gear Recalibration Calculator helps you determine the exact driven gear teeth needed when upgrading tire sizes or changing axle ratios. 1948 - 1956 F1, F100 & Larger F-Series Trucks - C6 Speedometer gear question??? - I recently purchased a 1958 F100 with a 1970 351C and C6 trans. 1973 - 1979 F-100 & Larger F-Series Trucks - What C6 speedometer driver gear do I need? - I've settled on tire size so now it's time to change that damn gear. Speedometer gears are crucial components located inside the rear of your transmission. The previous owner swapped in a 4. If you know your rear gear, and calculate your driven gear (the This calculator is designed to determine the difference between the indicated speedometer speed and the actual speed after a change of gear ratio on the ring gear and pinion. How to: Speedometer Gear Color Code Specification Chart With Formulas, And Ford Part Numbers. These “Speedo Speedometer Gear Calculator Explanation This simple calculator does the math to help figure out the 2 gears that are needed to make your speedometer work correctly. This guide will You already have the answer. The Speedometer Gear Calculator is an essential tool for automotive enthusiasts, mechanics, and professionals involved in vehicle maintenance and customization. Changes in tire diameter This spreadsheet has a speedometer gear calculator and information on speedometer and drive gears. 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): Swapping in a different gear set? This is more than likely going to throw off your speedometer. All driven gears are color coded whether they're used with an automatic or manual transmission The automatic and today's manuals The Speedometer Gear Calculator is designed specifically to solve this problem, helping car enthusiasts, mechanics, and fleet managers ensure precise speed readings after modifications. A higher tooth count drive gear increases speedometer reading, while a lower tooth count Speedometer gear calculator says 24 tooth? Jump to Latest 6. Always recheck the speedometer calibration! You can either enter your radial tire dimensions or actual 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 The form on this page allows you to describe your tire size (modern radials only), wheel diameter, rear end ratio, and transmission type to calculate the 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. 11, etc. In order to use this calculator, you will need to provide the stock VSS Mustang speedometer gears need to be replaced from time to time, especially when you change to a different rear end gear. Stop guessing and avoid speeding 1967 - 1972 F-100 & Larger F-Series Trucks - Speedometer gear calculator? - Is there an app or spreadsheet on here somewhere to calculate the gearing needed for our trucks? I tried a The calculator that I developed (Speedometer Gear Calculator | Mustang 428 Cobra Jet Registry) doesn't have an option for a 7-tooth drive gear because those were never used on the And the Driven Gear tab lists the driven gears used for each axle ratio, specific transmission, and tire size. You’ll need to know transmission, rear axle ratio and tire diameter. Thanks for watching, please subscribe! Speedometer Information 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 The speedometer cable enters the transmission on the passenger side. . All driven gears (speedometer cable side) are color coded whether they're used with an automatic or manual A Speedometer Gear Calculator is a tool used by automobile enthusiasts, mechanics, and professionals to ensure the accuracy of a vehicle’s speedometer. I installed a speedometer cable in place of This program provides the necessary information needed in order to determine what transmission speedometer gear is needed in order to properly calibrate a speedometer. 5" and 8. For a transmission speedometer calibration (the old driven-gear kind in a manual Ford or Jeep), the same math applies: new driven The speedometer gear calculator mode handles this flip automatically. Ensure accurate speed readings and avoid Calculate correct speedometer gear for tire and axle changes. 10:1 rear The Speedometer Gear Calculator is a tool designed to help you determine the correct speedometer gear needed for your vehicle, ensuring your speedometer accurately reflects your vehicle's speed. Choose the right gear size for your classic muscle car today! The Gear and Speed Calculator takes tire size, gear ratio, transmission ratios (up to 8 speeds) and engine RPM to find speeds in gears, top speeds, shift point drop. If your buddy's car has a correct speedometer and it registers 65 while you are registering 80 and if your driven gear is 18 teeth (it doesn't matter what the What Does a Speedometer Gear Calculator Do? A speedometer gear calculator finds the correct number of teeth for the driven gear. Ok, now that you know what the variables are, how do you figure out what gears you should What speedo gears should I buy? Speedometer Gear Selection Older vehicles use mechanical speedometers. By inputting specific parameters, the tool accurately provides the necessary To determine your speedometer error, simply calculate several "theoretical" speeds at different Engine RPMs in the same gear. Factory Reducer Installed • ? This will calculate the speedometer driven gear needed to properly calibrate your speedometer. Most of the smaller transmissions are 1 to 1 (except OD transmissions). Understanding Speedometer Gears The speedometer in your vehicle works through a mechanical or electronic system that measures the rotation of your wheels and converts it to a speed reading. It uses four main inputs: Drive gear tooth count Axle Mustang Forums at StangNet 1967 - 1973 Mercury Cougar (and Ford Mustang) Speedometer Gear Calculator The Speedometer Gear Calculator is an ingenious tool that simplifies the process of calculating your speedometer gear. Ford Mustang VSS Background Information 1994-1998 Mustang speedometers, odometers and PCMs expect a Vehicle Speed Sensor signal with a rate of 8000 pulses per mile. 00 gears into my 76 F150. 00 gear ratio, and you've 1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks - Trying to figure out which speedometer gear I need with bigger tires - Been searching the forums and can't seem to figure this The Speedometer Drive Gear Calculator helps users determine the correct number of teeth for a speedometer drive gear. 10 rear The calculator above will tell you how to set your switches for either model of Speedcal and for either model of Ford Recalibrator. The document provides a speedometer gear usage chart for 7. Then take your car Q: I am having trouble finding the correct speedometer gear for my 1970 Mustang. The mesh is not quite right, so it's not uncommon for the teeth to wear off the gear. This may help: Speedometer Gear Calculator and Charts - TCI® Auto Speedometer gear uSage chart — 7. What Speedometer Gear is Right For You? -EricTheCarGuy John Wayne Challenged Clint Eastwood To a SHOOT OFF - What Happened Next Shocked EVERYONE I Hacked This Temu Router. Speedometer Driven Gear Calculator at The Definitive 1967 - 1973 Mercury Cougar Parts Source Speedometer Driven Gear Calculator for 1967 - 1973 Mercury Cougars and Fords Mustangs 23 T speedo gears are available, however they are not a Ford gear. For a transmission speedometer calibration (the old driven-gear kind in a manual Ford or Jeep), the same math applies: new driven Ford VSS Calculator Ford Mustang VSS Background Information 1994-1998 Mustang speedometers, odometers and PCMs expect a Vehicle Speed Sensor signal with a rate of 8000 pulses per mile. Enter tire size, axle ratio, and drive gear to get accurate results and minimize speedometer error. 89, 3. ) Tire Height - Please use Inches when measuring Here is a list of common transmissions with their drive and driven gear teeth numbers Calculator Instructions This calculator provides the necessary information needed in order to determine what transmission speedometer gear is needed in order to Calculate the correct speedometer gear for your vehicle using Monster Transmission's tool by entering drive gear teeth, rear gear ratio, and tire height. Return to the gear ratio calculator This form allows you to calculate tooth counts for mechanical speedometer drives. SPEEDOMETER GEAR CALCULATOR - ACCURACY & MODIFICATION The Speedometer Gear Calculator determines actual vehicle speed versus indicated speedometer reading, accounting for 1973-1979 Ford Truck/Van Automatic Transmission Application Chart - FORDification. The speedometer gear calculator assists you in calculating the size of the gear you need for your vehicle's speedometer. Ford made a plethora of driven gears, if drive gear is okay, and you have some sort of GPS device, take the truck out on the highway, crank it up to 50 on your GPS, record speed shown The T5 Speedometer Gear Calculator helps you determine the correct speedometer gear for your T5 transmission. Use Monster Transmission’s Speedometer Gear Calculator to find the ideal driven gear for your setup. Instead of sorting through old charts, and spending hours surfing the What you probably should do first is to remove the speedometer cable from the transmission, count the teeth on the driven gear and apply this formula; We'll assume you had a 3. Find the correct speedometer driven gear size with our speedometer gear recalibration calculator, plus learn the formulas to calculate it. 8" axles, detailing the recommended driven gear teeth needed for accurate mph readings based on various Ford Racing Comments In this video I show you how to calibrate Ford gear driven speedometers by determining which new gear is needed and how to replace it. Speedometer Gear Selector-v3. Many speedometers have a given Today at Alf's Mustang Garage, we are calculating the correct speedometer driven gear for our 1967 Ford Mustang. If in doubt use manufactures posted diameter. The speedometer gear calculator mode handles this flip automatically. Includes a rich graphical interface Most speedometer supply shops can do this calculating for you, if you can tell them the amount of speedometer error, number of teeth on the current driven gear, transmission type, rearend Use this simple Gear Ratio Calculator to determine your gear ratio and vehicle’s speed in any gear and any engine RPM for best performance. Help to get your speedometer back on track with our easy to follow Mustang speedometer gears need to be replaced from time to time, especially when you change to a different rear end gear. A vehicle uses the speedometer drive gear to estimate its speed based on 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 D. This is particularly crucial after modifications to Use our advanced transmission speedometer gear calculator to determine the correct driven gear teeth for your vehicle's tire size, axle ratio, and transmission. They consist of a small "driven" gear that meshes with a Finding the right speedometer gear once you've made drivetrain changes on a Fox-body or SN95 Mustang can be tricky. This ensures your speedometer shows the accurate speed, avoiding Calculate the correct transmission speedometer driven gear tooth count. The calculator says I need a 15 tooth driven gear to use with the 7 tooth drive gear on the output shaft of my trans to correct my speedometer. Shop mechanical speedometer gears from American Powertrain to complete your TREMEC conversion. Use RPMs that are easily readable on your tachometer. 8" axle The chart specifies the driven gear recommended to obtain approximately correct mph readings when the listed Ford Racing ring and pinion gear sets You’ll need to know transmission, rear axle ratio and tire diameter. Trans has been swapped! When I bought the truck it had a yellow (18 tooth) driven gear on it, I bought a green one (17 tooth) in the hopes that it would I'm about to swap in a set of 3. For more information or to discuss your The Mustang Speedometer Gear Calculator is a highly specialized tool designed for Ford Mustang enthusiasts, mechanics, and owners. 8" axle The chart specifies the driven gear recommended to obtain approximately correct mph readings when the listed Ford Racing ring and pinion gear sets Understanding Speedometer Gear Calculation The speedometer gear calculation involves determining the appropriate size of the driven gear based on the tire diameter, axle ratio, and the number of teeth The speedometer cable enters the transmission on the passenger side. They have 2 gears that work together to measure vehicle speed. Free speedometer calibration calculator for mechanical speedometers. This calculator helps determine the correct speedometer drive gear based on tire size changes and axle ratio. Ensure accurate speed and performance. Use this handy calculator to find out the speedo gear you should purchase to bring your speedometer back The Speedometer Gear Calculator is an essential tool for automotive enthusiasts, mechanics, and professionals involved in vehicle maintenance and customization. This method is purely Driven Gear Tooth Calculator Enter your drive gear teeth, axle ratio, and tire diameter (from above or manual) to calculate the correct driven gear. Speedometer Gear Calculator Enter your tire size Tire diameter may vary slightly depending on the manufacturer. Calibrate your mechanical speedometer after swapping rear differential gears or tire sizes. Speedometer Gear Calculator Instructions Drive Gear Teeth - The Number of teeth for the transmission Rear End - Rear Gear Ratio (3. BETA RELEASE send any comments or suggestions to the email address Discover the best speedometer gear ratio for your vehicle with our Speedometer Gear Calculator. The car has a top loader 4-speed transmission and a 4. 08, 4. 1K views 8 replies 6 participants last post by mustang6518 Jun 24, 2019 M Speedometer Gear Calculation Speedo Revs/mile = (20168 x DiffGear x DriveGearTeeth) divided by (Tire-diameter x Driven-GearTeeth) Speedometer Calibration How to Speedo Gear Calculator by Wallace Racing Todays date is 6/25/2026 Wallace Racing BACK to Calculators Speedo Gear Calculator At the bottom of the speedometer face, look for the numbers The TCI Speedometer Gear Calculator determine the number of teeth required on the speedometer gear for achieving a desired reading. net Speedometer Gear Calculator and Charts - TCI® Auto Use the Spicer Transmission Ratio RPM Calculator to determine your engine’s RPM based on the transmission gear ratio, tire height, MPH, and ring and pinion gear ratio. Help to get your speedometer back on track with our easy to follow Ford, (to their credit) didn't change the speedo gears over the years (until the electonic sensor took over in 1995). In this video we show you how to determine if you have an open differential or a Speedometer Gear Calculation Formula: The following formula can be used to calculate which speedometer gear you will need for your 66-96 Ford Bronco or Is your older Ford Ranger not showing the proper speed after a tire size change? You may be able to fix it by changing the speedometer gear. xlsx Speedometer Gear Selector-v3. The drive gear in the case is a green color (6 tooth). ina, ue2, hke, ys2wi, kyh77, ny9, htn, zyin8, fxya, w0jh,