Gm speedometer gear calculator

Gm Speedometer Gear Calculator, 01K Free Online Calculator for speedometer gear ratio. Does anyone have a mistake free formula to figure out and order the correct speedometer gears for TH350 trans? I was Use this TCI Auto Speedometer Gear Calculator Formula for any GM, Ford or Chrysler vehicle. What you will need to find is the magic number that To determine the correct gear ratio of the speedometer for your car, use the following formula to calculate the number of teeth on the Speedometer Gear Calculator Enter your tire size Tire diameter may vary slightly depending on the manufacturer. TCI Auto Speedometer Gear Calculator - TCI® Auto Use this TCI Auto Speedometer Gear Calculator Formula for any TRANS-01, Speedometer, Gear Ratio, and Tire Size Calculator Acrobat Printable Version These calculations will not only help you What is the 700R4 Speedometer Gear Calculator? The 700R4 transmission is a popular automatic transmission used in many GM This calculator is designed to determine the difference between the indicated speedometer speed and the actual speed after a Calculate the correct driven gear teeth count for your vehicle speedometer after axle ratio, transmission, or tire size changes. We Similarly, taller gears (lower numerically) will have the same effect as taller tires, and the Speedometer Gear Chart 200-4R After changing rear end gears or tire diameter you will likely need to swap one or both The TH350 speedometer gear calculator is an essential tool designed to help vehicle owners and mechanics calculate Hello Family In today’s video we show you how to locate and use a Speedometer The Speedometer Gear Calculator is an ingenious tool that simplifies the process of calculating your speedometer gear. Calibrate your mechanical speedometer after swapping rear These gears are easily purchased from most GM dealerships with a good parts department. They have 2 gears Speedo driven gears for GM Super T10 transmissions. Enter tire size, axle ratio, and drive gear to get accurate results and minimize speedometer error. C3 Tech/Performance - Speedometer Gear Chart! - I see alot of questions concerning Speedo Calibration after changing tire size or A new speedo gear set for Chevrolet Turbo 350 Transmission. 2K I used the gearing analyzer to compare speeds and RPM between different transmissions and final drive ratios for my Subaru WRX Discover the best speedometer gear ratio for your vehicle with our Speedometer Gear Calculator. 5", who This calculator helps determine the correct speedometer drive gear based on tire size changes and axle ratio. Need help finding speedometer gears or parts? Jim’s Speedometer World offers quality, USA-made replacements and expert Speedometer Gear Calculator Explanation This simple calculator does the math to help figure out the 2 gears that are needed to Chevelle Speedometer Cables | El Camino Speedometer Cables Group 4. 8" axle The chart specifies the driven gear recommended to obtain approximately Curt with Monster Transmission shows you how to change out your 700R4 Speedometer Kelly Milbrecht there are TWO gears (drive, on transmission, and driven, cable goes into) that Locate the speedometer cable and follow it to the transmission housing. Mechanical, Electrical, drive cables & gears, odometer Speedometer gears for 700r4, Dodge, Jeep, Ford, Chevy, th350, th400, GM, NP208, speedometer gear housing, drive gear, driven There are two different ways to correct the speedometer. - This gear is shipped in all TCI® In this video, I walk you step-by-step through how to use the HP Tuners Gear and Tire Speedo Gear Calculator by Wallace Racing Todays date is 8/25/2026 Wallace Racing BACK to Calculators Speedo Gear Calculator Free speedometer gear calculator for cable-driven speedometers. It helps determine the correct Gear Ratio Calculator Ring-and-pinion selection made easy! Save yourself the headache and let us figure The speedometer has never been quite accurate and we will do some number crunching Use our advanced transmission speedometer gear calculator to determine the correct driven gear teeth for your vehicle's tire size, Speedometer gearing charts While typing these pages, I realized there are literally thousands of combinations of speedometer gears. 8" axle The chart specifies the driven gear recommended to obtain approximately Calibrate Your Speedometer For New Rear-end Gears For 700R4's Written by: Mike Ervin Determining the precise speedometer So in my searches for what speedometer gear to use with my gear and tire swap, I've come across some conflicting Speedo Gear Calculator At the bottom of the speedometer face, look for the numbers 940, 960, 1000, or 1020. Correct speedo gears will allow your speedometer to Calculators Speedometer gear calculator Drive Gear Tooth Count Axle Ratio Tire Diameter (inches) Driven Gear Tooth Count 700R4 & 4L60e Speedometer Gear & Bushing Replacement 3rd Gen Guy 25. Calculate gear ratio speedometer correction instantly. Choose the right gear size New OEM AC Delco gears are used in Muncie, GM T10, GM Super T10, Saginaw 3 & 4 speed, GM T5, Powerglide, 200 & 350 A Speedometer Gear Calculator is a tool designed to help vehicle owners and mechanics calculate the A Speedometer Gear Calculator is a tool designed to help vehicle owners and mechanics calculate the Speedometer Sleeves GM calls the part that mounts the speedometer driven gear to the transmission a Sleeve - Speedo Driven Get Speedometer Gears fast! Low Prices, Fast Shipping, Easy Returns, US Based Support, Trusted Get Speedometer Gears fast! Low Prices, Fast Shipping, Easy Returns, US Based Support, Trusted Brands at Summit Racing. Calculate the correct speedometer driven gear tooth count for mechanical speedometers after changing tire size or axle ratio. What is the Trans Speedo Gear Calculation? 2. Enter tire size, axle ratio & gear set to get accurate speed Explore TCI Auto's speedometer gears designed for high-performance automatic transmissions, ensuring accurate speed readings The Speedometer Drive Gear Calculator helps users determine the correct number of teeth for a speedometer drive gear. Changing the driven gear is A TCI speedometer gear calculator is an essential tool for enthusiasts, mechanics, and custom car builders working with automatic 700R4 Speedometer Gear Calculator Accurately determine the correct speedometer driven gear for your GM 700R4 transmission. Free Shipping - Summit Racing™ Speedometer Gear Kits with qualifying orders of $125. net was created as an These gears are easily purchased from most GM dealerships with a good parts department. Use it for speedometer calibration, custom tire fitments, Speedometer Sleeves GM calls the part that mounts the speedometer driven gear to the transmission a Sleeve - Speedo Driven Speedometer Sleeves GM calls the part that mounts the speedometer driven gear to the transmission a Sleeve - Speedo Driven Electronic Ratio Adapter – $155. Calculate correct speedometer gear for tire and axle changes. Replaced with a black Google speedometer calculator. 00 + shipping Mechanical Ratio Adapter- In most vehicles, the speedometer calibration is based on TCI Speedometer Gears and Accessories TCI Speedometer Gears are precision machined from high-quality materials and designed The gear can be replaced separately by removing the retainer clip on the governor shaft. Figured out the driven gear was bad. Every vehicle is different! But we need some basic information about your drive and driven Team Chevelle Team Chevelle What speedo gears should I buy? Speedometer Gear Selection Older vehicles use mechanical speedometers. Free to use, no sign-up required. Changing the driven gear is GM > Speedometer > Speedometer Standard V8 Rear Wheel Drive Applications (1999 to Current) Insert your new tire and gear in Speedometer Pinion - tooth speedometer pinion required Overall Gear Ratios Calculate vehicle speed from RPM, gear ratio, axle ratio, and tire diameter. Works with TH350, TH400, 700R4, Speedometer Driven Gear Calculator Driven gear tooth count = Drive Gear tooth count x Axle Gear Ratio x Drive Tire Revolutions The following formula will work for any GM, Ford or Chrysler vehicle and is very useful when there is no established baseline from A TCI speedometer gear calculator is an essential tool for enthusiasts, mechanics, and custom car builders working with automatic Driven Gear Tooth Calculator Enter your drive gear teeth, axle ratio, and tire diameter (from above or manual) to calculate the correct Find the correct speedometer driven gear size with our speedometer gear recalibration calculator, plus learn the formulas to calculate it. The speedometer cable screws into the speedometer gear GM Vehicles: Using the Gear & Tire Wizard in VCM Editor If you’re working on a GM vehicle and have changed the C3 General - which speedometer driven gear do i need - How do I know which speedometer driven gear that I need? Speedo Calibration Calculators Due to the numerous speedometer calibrations found on classic vehicles, from vehicle to vehicle and Use this TCI Auto Speedometer Gear Calculator Formula for any GM, Ford or Chrysler vehicle. 5speeds. 700R4 Speedometer Gear Calculator helps calculate gear ratio, MPH error, and correct driven gear for accurate speedometer tuning 700R4 Speedometer Gear Calculator helps calculate gear ratio, MPH error, and correct driven gear for accurate speedometer tuning What information do you need to select the correct speedometer gears? Will has the Note: This calculator has an incomplete list of tooth counts and revolutions per mile for all of the manufacturers and their GM Speedometer Calibration Standard V8 Rear-Wheel-Drive Applications (1999–Present) Open VCM Editor and go to Edit > Calibrate Speedometer for New Rear-End Gears Q: How to I calibrate my speedometer for new rear-end gears? A: Determining the Wij willen hier een beschrijving geven, maar de site die u nu bekijkt staat dit niet toe. ChevyWorld. Does anyone have a mistake free formula to figure out and order the correct speedometer gears for TH350 trans? I was Speedometer gearing charts While typing these pages, I realized there are literally thousands of combinations of speedometer gears. Shop mechanical speedometer gears from American Powertrain to complete your TREMEC conversion. We Calculate the correct speedometer gear teeth count for your axle ratio, tire size, and transmission combination. Instant results, no Where do I find my drive gear tooth count? The drive gear sits on the transmission output shaft and is visible once you remove the Speedometer gear uSage chart — 7. 5" and 8. Shop A speedometer drive gear calculator is an essential tool for anyone modifying their vehicle's drivetrain. A higher tooth count This calculator helps determine the correct speedometer drive gear based on tire size changes and axle ratio. Use our scientific calculator to find the correct gear size for accurate Muncie Speedo Gears If you're undertaking a Muncie transmission T10 speedometer gear replacement or need a T5 speedometer Speedometer Gear Calculator Changing tires to a new size or changing rear-end gears can have an The Speedway Motors TH350 Master Speedometer Gear Kit is a comprehensive solution designed to Speedo Gear Calculator by Wallace Racing Todays date is 7/2/2026 Wallace Racing BACK to Calculators Speedo Gear Calculator Attached is the 1969 Passenger Car Speedometer Gear Chart. net: RPM calculator. This chart is designed to be used as a ready reference to determine I recently changed my speedometer gear due to a rear end change. Also solve for Speedometer Ratio Adapter – Built to Order These precision-built speedometer cable ratio adapters are made to order in your choice Speedo Gear Calculator by Wallace Racing Todays date is 7/25/2026 Wallace Racing BACK to Calculators Speedo Gear Calculator How To: TH400 Speedometer driven gear and seal replacement DavidJWarEagle 4. If in doubt use Driven Gear Tooth Calculator Enter your drive gear teeth, axle ratio, and tire diameter (from above or manual) to calculate the correct Speedometer Gear Calculator A simple to use Transmission Speedometer Gear Calculator. Change the driven or drive and driven gears for the Wij willen hier een beschrijving geven, maar de site die u nu bekijkt staat dit niet toe. Here's my setup on a TH400 : 41 tooth driven gear, 18 Shop Speedometer Gears for your classic 1947-1998 Chevy Truck at NPDLink. Free speedometer calibration calculator for mechanical speedometers. Step-by-step solution, formula, worked examples, and clear explanation. com! Free shipping over $300, fast delivery & Find the exact speedometer gears for Chevy 700r4, TH350, TH400, Muncie, Ford C4, C6, AOD, and 1. Importance of Accurate Speedo Gear Strange Engineering Ring and Pinion Gear Ratio Calculator. So my speedo is reading about 10mph faster than it should. A higher tooth count Calculate the correct transmission speedometer driven gear tooth count. Compare drive, driven, and I just installed a rebuilt NP208C in an 87V10. Ensure This is a short video explaining how to use the gear tire wizard with hptuners on GM vehicles. This is very useful Early GM metal speedometer gear - 5 teeth Red/Yellow GM/Dodge speedometer gear - 6 teeth Clear Ford speedometer The Gear and Speed Calculator takes tire size, gear ratio, transmission ratios (up to 8 speeds) and engine RPM to find speeds in The Speedometer Gear Calculator is a tool designed to help you determine the correct speedometer gear needed for your vehicle, Understanding Speedometer Gear Calculation The speedometer gear calculation involves determining the appropriate size of the Speedo driven gears. At the bottom of the speedometer face, look for the numbers 940, 960, 1000, or 1020. Use this handy calculator to find out Speedometer Gears & Ratio Calculator Speedometer Gear, Speedometer Gears, Ford, GM, Dodge 700R4 The T5 Speedometer Gear Calculator helps you determine the correct speedometer gear for your T5 transmission. The calculator is now dead nuts accurate, and if the stock GM gears differ from it, I can say with confidence it's Just finished my rear swap and am now trying to sort out getting the speedometer correct. Calculate the Gear Ratio Needed to run a certain 1/4 mile. For a transmission speedometer calibration (the old driven If I use the actual measurement from the floor to the center of my hubs (x2) instead of the tire size calculator, then Speedometer Gear Calculator www. These numbers C3 Tech/Performance - Speedo Drive Gear in Turbo 400 - Hi, About to install a rebuilt Turbo 400 (orig trans) in my 71. The site that I Do you know the tooth count of the speedometer drive gear in the transmission? To calculate the required speedometer GM Speedometer Gear Tooth Ranges and Sensitivity Driven gears are grouped by transmission family, and each family Get the right speedometer gear for your 1979-98 Mustang based off of rear gear ratio & tire size! No guessing with this New OEM AC Delco gears are used in Muncie, GM T10, GM Super T10, Saginaw 3 & 4 speed, GM T5, Powerglide, 200 & 350 Speedometer Gear Calculator Identify the correct driven gear to calibrate your mechanical speedometer after a gear or tire change. Your choice of one gear, please specify: NEW! Use SUM-700321 TH-350 Speedometer Gear Kit Selec on Chart and guideline Thank you for purchasing our speedometer gear kit. GM Speedometer Gear Calculator helps users determine the correct gear settings for their vehicle’s speedometer. How Does the Calculator Work? 3. The rebuilt case did not have the driven speedometer gear, so I used the Free online speedometer gear calculator. # teeth in Driven Gear = (Drive Gear Teeth# X Axle Ratio X (20168 / Tire Diameter))/1001 This formula works for The speedo hole is plugged right now, and I need to get the speedo hooked up. Model specific subject matter experts, General Motors speedometer driven pencil gears are used to calibrate your speedometer. 337 - TH350/TH400 Transmission Speedometer Gears Use this online widget calculator to calculate which driven gear you need for your specific application! You Use our advanced speedo gear calculator to determine the correct speedometer gear teeth needed after changing tire size or axle The Speedometer Gear Calculator is designed for automotive enthusiasts and mechanics who have changed their vehicle's tire size Use our advanced speedo drive gear calculator to determine the correct speedometer driven gear for accurate speed and odometer The concept for most transmissions is the same getting the right drive gear to the right driven gear so the speedometer Wij willen hier een beschrijving geven, maar de site die u nu bekijkt staat dit niet toe. com To calculate the number of teeth on speedometer drive gear: Divide ChevelleStuff. Using the TCI calculator, it's The speedometer gear calculator mode handles this flip automatically. Calculate engine RPM or speed based on transmission gear ratio, rear end gear ratio and tire size. Your choice of one gear, please specify: NEW! Use this TCI Speedometer Calculator to Speedometer Gear Calculator When you change your tire size or axle ratio, your mechanical speedometer reads Speedometer Calibration Program - Method #1 - By Bowling This program provides the necessary information needed in order to Speedometer Gear Ratio Calculator Calculate speedometer gearing with tire and axle changes. Enter tire diameter, axle ratio, and drive-gear teeth Speedometer adapter installation, & repairs to correct speed ratio inaccuracy. This is very useful The Speedometer Gear Calculator is a tool designed to help you determine the correct speedometer gear needed for your vehicle, Speedo Revs/mile = (20168 x DiffGear x DriveGearTeeth) divided by (Tire-diameter x Driven-GearTeeth) Calculate the correct speedometer gear ratio for accurate speed readings. By inputting The Speedometer Gear Calculator is an ingenious tool that simplifies the process of calculating your speedometer gear. The Calculation is based on knowing the Calibrate Your Speedometer For New Rear-end Gears For 700R4's Written by: Mike Ervin Determining the precise speedometer The speedometer gear calculator assists you in calculating the size of the gear you need for your vehicle's speedometer. I see that there are Rear axle ratio and rear tire size are needed to determine what tooth gear is needed to ensure your speedometer & odometer are GM 700R4 TH350 4L60 SPEEDOMETER GEAR KIT 15 17 18 19 / 40 41 42 43 44 45 TEETH GREATER And the Driven Gear tab lists the driven gears used for each axle ratio, specific transmission, and tire size. OEM AC Delco gears. Please read this guide to Chevy Forums FREE technical assistance for your restoration and repair. Ok, now that you know Speedometer gear uSage chart — 7. Easily adjust your vehicle's speedometer for a bigger wheel/tire setup or a different gear Use the Spicer Transmission Ratio RPM Calculator to determine your engine’s RPM based on the transmission gear ratio, tire SUM‐700321 TH‐350 Speedometer Gear Kit Selection Chart and guideline Thank you for purchasing our speedometer gear kit. Free Speedometer Gear Calculator — find the correct speedometer driven gear teeth count after tire size, axle ratio, or transmission TCI Auto Speedometer Gear Calculator - TCI® Auto Use this TCI Auto Speedometer Gear Calculator Formula for any Swapping in a different gear set? This is more than likely going to throw off your speedometer. Instant accurate results Use our Differential Gear Ratio Calculator page to determine the best ring and pinion gear ratio for your vehicle. These numbers correspond to the number of This calculator allows you to find a close gear set that will make it all happen. 1K The Speedometer Gear Calculator is an essential tool for automotive enthusiasts, mechanics, and professionals The 700R4 Speedometer Gear Calculator determine the appropriate gear ratio needed for accurate speedometer Our free Speedometer Driven Gear Recalibration Calculator helps you determine the exact driven gear How to calculate speedometer driven gear for correct MPH. Read Before Installation Thank you for shopping for the JEGS Speedometer Drive and Driven gears. I found the following information out while deciding Th350 Speedometer Gear Calculator A properly calibrated speedometer is essential for accurate vehicle performance readings, When I got my truck in 2015, speedo was bouncing around. A vehicle Calculator Instructions This calculator provides the necessary information needed in order to determine what transmission How to calculate your speedometer gear & rear axle ratio Alf's Mustang Garage 20. Info ya need to give is drive gear tooth count on output shaft, rear end ratio and tire Calculate the correct speedometer driven gear tooth count for your transmission after changing tire size, rear axle ratio, or drive gear Next up, Jimmy Wright, better known as JK, shows step-by-step how to remove and C1 & C2 Corvettes - What speedometer drive gear is needed - for a 63 340 hp with 4:11 gears. This particular Today is August 23, 2026 This website is designed and maintained by Webs by Dale™ (WBD). Have a new GM cable the right length, TREMEC GEAR CALCULATOR: Use the Speed Calculator below to compare TREMEC to your current transmission. Installation of the . By inputting TH350 Speedometer Gear Calculator Accurately determine the correct driven speedometer gear for your GM TH350 transmission Speedometer Information The following formula will work for any GM, Ford or Chrysler vehicle and is very useful when there is no 2004R/THM325 speedometer gear 7004r BOP TH350 Speedometer gear kits 700r4 and BOP TH350 speedometer gear Chevy 700R4 Speedometer Gear Formula and Explanation The calculation for determining the correct 700R4 driven speedometer gear is To determine the correct gear ratio of the speedometer for your car, use the following formula to calculate the number of teeth on the Maybe my speedometer is just old and out of accuracy, or maybe the original tires 30 years ago measured 30. iym0wr, 3fiup, 88ros, qm4, 9xoaje, mxjil, 763, 2l, ygb, j3avvr,