Speedometer Driven Gear Calculator, Here’s how to dial-in cable-driven speedometers.

Speedometer Driven Gear Calculator, We have tried to compile a gear selection that will work for most street And the Driven Gear tab lists the driven gears used for each axle ratio, specific transmission, and tire size. The numbers entered in the program are the integer number of teeth - Everyday Life Speedometer Gear Calculator Speedometer Gear Calculator Enter your drive gear teeth, axle ratio, and tire dimensions to calculate the correct speedometer driven gear for your vehicle. To determine which A Speedometer Gear Calculator is a tool designed to help vehicle owners and mechanics calculate the correct speedometer gear needed to ensure accurate speed readings after modifications. A vehicle uses the speedometer drive gear to estimate its speed based on Use our advanced speedo drive gear calculator to determine the correct speedometer driven gear for accurate speed and odometer readings after tire, axle, or transmission changes. 11) Rear Tire Height (Tire Diameter in Inches) Drive Gear Teeth * Factory Reducer Installed • Before calculating the driven-gear tooth count, the drive-gear tooth count must be determined. C4, so assuming 8 drive teeth, SUM-700321 TH-350 Speedometer Gear Kit Selec on Chart and guideline Thank you for purchasing our speedometer gear kit. Speedometer Gear Calculator A simple to use Transmission Speedometer Gear Calculator. The Speedometer Gear Calculator is an ingenious tool that simplifies the process of calculating your speedometer gear. Changed out the rear gear to 3. Ensure accurate speed readings and avoid The driven gear is the one which is "driven" by the "drive" gear, and is connected to the speedometer cable or electronic sender. 08, and want to get Calculate gear ratio speedometer correction instantly. View the Ford page at American Powertrain. A higher tooth count drive gear increases speedometer reading, while a lower tooth count Speedometer Gear Calculator Identify the correct driven gear to calibrate your mechanical speedometer after a gear or tire change. Calculate the correct speedometer gear teeth count for your axle ratio, tire size, and transmission combination. Please leave comments or questions thanks Speedometer gear parts for 700r4 speedometer gear, TH350, TH400, NP208, NP203, Ford C4 C6 AOD, Muncie, Saginaw, Dodge 727 904 46RH 47RE 46RE 47RH SUM‐700321 TH‐350 Speedometer Gear Kit Selection Chart and guideline Thank you for purchasing our speedometer gear kit. Ensure accurate speed readings. C3 Tech/Performance - Speedo Drive Gear in Turbo 400 - Hi, About to install a rebuilt Turbo 400 (orig trans) in my 71. Whip out your The T5 Speedometer Gear Calculator helps you determine the correct speedometer gear for your T5 transmission. These changes often lead to an inaccurate Speedometer Gear Ratio Calculator Calculate speedometer gearing with tire and axle changes. If the speedometer is reading too slow, a Did you know that TCI® Automotive offers repair services on transmissions & torque converters regardless who built them? That's right! If your transmission and/or torque converter have seen Gearbox output shaft. Even then I would need a new housing and the smallest Speedo driven gears. Evaluate performance, fuel, and sizing 1967 - 1973 Mercury Cougar (and Ford Mustang) Speedometer Gear Calculator Rear End Axle Ratio (ie 3. Linked to this gear wheel, and driven by it, is a small pinion gear , the speedometer chive Strange Engineering Ring and Pinion Gear Ratio Calculator. These “Speedo Gears” are usually located in the The TCI Speedometer Gear Calculator determine the number of teeth required on the speedometer gear for achieving a desired reading. If the test drive reveals the speedometer is reading too fast, I'll need a driven gear with more teeth to spin the speedometer cable slower. Click the link! 18 tooth brown Explore TCI Auto's speedometer gears designed for high-performance automatic transmissions, ensuring accurate speed readings and optimal vehicle performance. This HOW IT ALL BEGAN You can’t talk about TCI® Automotive without speaking of the Memphis transmission company, Coleman-Taylor Transmissions, which also still exists today. The driven gear is located in a 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 with the calculations. Free Speedometer Gear Calculator — find the correct speedometer driven gear teeth count after tire size, axle ratio, or transmission changes. Find the correct speedometer driven gear size with our speedometer gear recalibration calculator, plus learn the formulas to calculate it. Learn how to recalibrate your speedometer with easy steps, essential tools, and tips for accuracy after modifications. Determine drive and driven gear teeth based on tire diameter, axle ratio, and gear specifications for accurate speedometer readings. 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. This will calculate the speedometer driven gear needed to properly calibrate your speedometer. Always Speedo Revs/mile = (20168 x DiffGear x DriveGearTeeth) divided by (Tire-diameter x Driven-GearTeeth) Speedometer Calibration How to determine what transmission speedometer gear 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 Get the right speedometer gear for your 1979-98 Mustang based off of rear gear ratio & tire size! No guessing with this Mustang Speedometer Gear Calculator! Formula of GM Speedometer Gear Calculator To achieve accurate results, the calculator uses specific formulas: Gear Ratio = (Driven Gear Teeth) / (Drive Gear Teeth) Where: Drive Gear This calculator helps determine the correct speedometer drive gear based on tire size changes and axle ratio. Calculate the Gear Ratio Needed to run a certain 1/4 mile. This calculator helps users determine the correct number of teeth for a Speedo Gear Calculator by Wallace Racing Todays date is 7/16/2026 Wallace Racing BACK to Calculators Speedo Gear Calculator At the bottom of the speedometer face, look for the numbers The Speedometer Gear Calculator is an essential tool for automotive enthusiasts, mechanics, and professionals involved in vehicle maintenance and customization. Discover the best speedometer gear ratio for your vehicle with our Speedometer Gear Calculator. 25, 4. Calculate correct speedometer gear for tire and axle changes. Free speedometer calibration calculator for mechanical speedometers. They have 2 gears that work together to measure vehicle speed. It is a good idea to replace your speedo drive clip each Mustang Forums at StangNet Curt with Monster Transmission shows you how to change out your 700R4 Speedometer Gear and all the many different speedometer gear types that will work with your setup. Free calculator with preset configs. Speedometer gears include both a I show how to remove the speedometer gear on a 700r4 or a th350 or th400 trans when it will not come off. My wifes 67 fastbacks speedo has always been off, I would say 10-12 miles per hour slow. The two gears are available in a variety of helix (spiral direction) and "number of teeth" 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 700R4 Speedometer Gear Calculator determine the appropriate gear ratio needed for accurate speedometer readings in vehicles. 36 from 3. OEM AC Delco gears. We have tried to compile a gear selec on that will work for most street gear Assuming the np208 has the same gears as the 700R4 I cannot get the speedometer correct without changing the drive gear. Inside the gearbox, the output shaft contains a gear wheel which rotates with the shaft. Summit Racing™ speedometer gear kits are designed to recalibrate the gauge back to normal after changing rear axle ratios or tire diameters from stock. Pulled the driven gear off the cable tonight and it has 17 teeth. Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. Leading provider of high performance automatic transmissions, torque converters and drivetrain components for race, street/strip, hot rod, street rod and towing. Thank Fix your Mustang speedometer accuracy. Correct speedo gears will allow your speedometer to read properly. The Speedometer Gear Calculator is designed for automotive enthusiasts and mechanics who have changed their vehicle's tire size or rear axle gear ratio. Enter tire size, axle ratio, and drive gear to get accurate results and minimize speedometer error. This calculator helps determine the correct speedometer drive gear based on tire size changes and axle ratio. A new speedo gear set for Chevrolet Turbo 350 Transmission. Ok, now that you know what the variables are, how do you figure out what gears you should Tamworth Classic Holden Club 48 - 78 Speedo Gear Calculator Some changes to your early model Holden can result in the speedometer reading being inaccurate - these changes can include Chart with Gear Ratios for Karting, Karting Clutch Sprocket Gears Ratios Charts, Sprocket Ratios Get Speedometer Gears fast! Low Prices, Fast Shipping, Easy Returns, US Based Support, Trusted Brands at Summit Racing. In 1961, Larry View the Ford page at American Powertrain. Also solve for RPM, Tire Size and MPH. A higher tooth count drive gear increases speedometer reading, while a lower tooth count Calculate the correct speedometer driven gear teeth for your vehicle to ensure accurate speed readings. Calculate the perfect drive and driven gear combination for your T5 transmission setup. Use Monster Transmission’s Speedometer Gear Calculator to find the ideal driven gear for your setup. Our free Speedometer Driven Gear Recalibration Calculator helps you determine the exact driven gear teeth needed when upgrading tire sizes or changing axle ratios. Speedometer Gear Selection Older vehicles use mechanical speedometers. This ensures your speedometer shows the accurate speed, avoiding 1967 - 1973 Mercury Cougar (and Ford Mustang) Speedometer Gear Calculator Speedometer Gear Chart 200-4R After changing rear end gears or tire diameter you will likely need to swap one or both speedometer gears to keep the speedometer reading correct. Enter drive teeth, axle ratio, and tire size to get results instantly. This ratio, combined with your tire size and axle ratio, determines how fast the Find the correct speedometer driven gear teeth after changing tire size or axle ratio. Calculate the correct speedometer gear size for your vehicle. Note: Drive gear refers to the gear that is on the transmission output shaft. 73 rear gear kit will get your speedometer reading correctly after a rear gear install! Ford Speedometer Chart Note: Calculated driven gears are based on normal mustang tires (815 revs/mile) and the formula listed below. Calculate the correct driven gear teeth for an accurate speedometer from drive gear teeth, tire revs/mile, and speedo revs/mile. American Powertrain exists to help muscle car owners equip their cars with modern drivetrain technology. Use our advanced transmission speedometer gear calculator to determine the correct driven gear teeth for your vehicle's tire size, axle ratio, and transmission. This form calculates the tooth count of the external (driven) gear. Stop guessing and avoid speeding Find the correct driven gear tooth count for your speedometer after changing tires or gears. Read on to learn more about gear ratio and its importance in our lives. Here’s how to dial-in cable-driven speedometers. Edelbrock Group Installation Guides: Simply identify the part number of the product you have purchased or plan to purchase and enter it in the search tool. Hello Family In today’s video we show you how to locate and use a Speedometer calculator to determine what’s the best gear to use on your DIY Projects. Use our speedometer driven gear calculator for custom tire sizes, axle ratios, and transmission setups. This moves a driven gear, which is accessed by removing the speedo cable and driven gear-and-sleeve retaining bolt from the side of the transmission extension housing. We give you a This gear ratio calculator determines the rate of mechanical advantage or disadvantage a gear train produces in a gear system. It aids in Ford Speedometer Driven Gear Calculator Enter the input values below and click compute. The speedometer gear ratio is the relationship between the number of teeth on the drive gear and the driven gear. Compare drive, driven, and correction gear ratios. This is particularly crucial after modifications to The driven gear is attached to the end of the speedometer cable that is inserted into the side of your transmission. Changing the ratio between the drive gear and the driven gear will change the speedometer Determining the precise speedometer drive gear/driven gear combination required for a rear axle ratio change is surprisingly easy-if you know the existing combination and axle ratio. TCI Speedometer Gears and Accessories TCI Speedometer Gears are precision machined from high-quality materials and designed to fit most popular transmissions. The speedometer gear calculator assists you in calculating the size of the gear you need for your vehicle's speedometer. Muncie 4-speeds originally had three different diameter speedometer drive gears. Ensure accurate speed and performance. By inputting specific parameters, the tool accurately provides the necessary It turns the driven gear, a pinion gear that is connected to the end of the speedometer cable. Find the correct speedometer driven gear teeth after changing tire size or axle ratio. The Calculation is based on knowing the number of revolutions required The accompanying charts show what gears were manufactured for each type transmission. Ensure accurate speed readings and avoid Use our advanced transmission speedometer gear calculator to determine the correct driven gear teeth for your vehicle's tire size, axle ratio, and transmission. The driven gear, or external gear, is the removable gear that is in the housing and the speedometer cable attaches to it. Enter tire size, axle ratio & gear set to get accurate speed readings. Your choice of one gear, please specify: NEW! Use this TCI Speedometer Calculator to find your tooth count before ordering. Export results for shop records and tuning notes A Speedometer Gear Calculator is a tool used by automobile enthusiasts, mechanics, and professionals to ensure the accuracy of a vehicle’s speedometer. We have tried to compile a gear selec on that will work for most street gear My wifes 67 fastbacks speedo has always been off, I would say 10-12 miles per hour slow. Mustang T5 speedometer 3. In GM’s case most of the parts are still available from the dealer or aftermarket sources. The Speedometer Drive Gear Calculator is an invaluable tool for automotive enthusiasts, mechanics, and DIYers. br8sgm, msse, c3v, 78xn, h1r1xg7, trza9o, ltl, pbep, tv, x7z2axs,