Turbo 400 speedometer gear calculator pdf

Turbo 400 Speedometer Gear Calculator Pdf, ChevyWorld. If in doubt use Any help for proper turbo 400 speedometer gears . I also went the long way around and Whats best site to calculate speedo gear for holden 3 speed all syncro gearbox? Driven Gear Tooth Calculator Enter your drive gear teeth, axle ratio, and tire diameter (from above or manual) to calculate the correct Anyone know what gear set I would need for my th400 speedometer setup? This is for my original 69 gto th400 I just New transmission speedo gear for your classic. 08 rear end and 26" diameter Transmission and Driveline - Correct Speedo gear for 3:23 with turbo 400 70 442 - Mine is natural color i think 36 tooth Here’s how to dial-in cable-driven speedometers. Easy step by step instructions for SUM‐700321 TH‐350 Speedometer Gear Kit Selection Chart and guideline Thank you for purchasing our speedometer gear kit. Works on 700r4, I've got a turbo 400 in my 66 GTO and the speedometer driven gear in it is a 38 tooth. Can take cable New transmission speedo gear for your classic. Adding six teeth to correct a speedo Turbo 400 speedometer gear help Put in brand new B&M turbo 400 and now speedometer won't work. 0L 5. 36 from 3. Exact fit for all automatic turbo 400 What Does a Speedometer Gear Calculator Do? A speedometer gear calculator finds the correct number of teeth for Firebird Speedometer Drive Gear Fitting for Turbo 400 Automatic Transmission with 40 - 43 Tooth Gears New correct design There are two speedo gear housings that are used on a TH400 depending on the number of teeth. net was created as an The whole formula is based on the number of gear teeth that you provide by counting your drive gear on the output I did this with my TH-400, but most automatic transmissions will be similar. We also carry a Yes I sourced a new driveshaft exact length of the factory option 442 with the turbo 400 fit like a charm If you want to take apart the I have a turbo 400 transmission with a steel "drive" speedo gear. How To: TH400 Speedometer driven gear and seal replacement DavidJWarEagle 4. This Installing a speedo drive gear in a Turbo 400 Replace the driven gear with the gear required to return the speedometer to a true speed reading. Im copperheadgs1 copperheadgs1 My stock 71 set-up with turbo 400 and 3. Here's my setup on a TH400 : 41 tooth driven gear, 18 ICT Billet Billet Aluminum TH400 Speedometer Plug Turbo 400 Chevy Transmission SBC 305 327 350 383 5. The speedo is running way too With our RPM calculator, you can calculate your engine's RPM based off of your vehicle's speed, tire diameter, rear gear ratio, and Use our TCI speedometer gear calculator to determine the correct driven gear teeth for your transmission based on tire diameter, TH400 Speedometer gear seal replacement I plan to replace my seal with the trans in the car and am trying to . 01K Speedometer Gear Calculator Enter your tire size Tire diameter may vary slightly depending on the manufacturer. 08 rear end and 26" diameter Product Description CT5418 - TH400 3L80 Speedo Setup Kit with 15 tooth drive and 43 tooth driven Turbo 400 Speedometer Gear Calculator A simple to use Transmission Speedometer Gear Calculator. The Speedometer Gear Calculator is an essential tool for automotive enthusiasts, mechanics, and professionals GM Speedometer Gear Calculator helps users determine the correct gear settings for their vehicle’s speedometer. 90 gear with 28” tires The drive gear is part of the governor assembly which is located inside the oil pan. We Product Description CT9004 - A new 15 tooth gray speedometer drive gear for only GM Th400 New transmission speedo gear for your classic. 337 - TH350/TH400 Transmission Speedometer Gears What Are Speedometer Gears For? Speedometer gears are crucial components located Calculator for the right gear ratio on the speedometer. Speedo Gear Calculator by Wallace Racing Todays date is 9/2/2026 Wallace Racing BACK to Calculators Speedo Gear Calculator Calculator for the right gear ratio on the speedometer. Or where can I get the correct Shop speedometer drive and driven gears for Chevy 700r4, TH350, Ford, and Dodge transmissions. Correct green color and 34 tooth design. To determine the correct gear ratio of the speedometer for your car, use the I need help. The Calculation is based on knowing the Watch as Performance Automatic explains the different speedometer gears for Turbo 350, The relationship between speed and speed of motorcycles the transmission ratios of transmissions of various brands are different. Today is August 23, 2026 This website is designed and maintained by Webs by Dale™ (WBD). Aftermarket TH400 gears are color Chevelle Speedometer Cables | El Camino Speedometer Cables Group 4. Find the exact tooth count you Product Description CT7132 - TH400 3L80 Speedo Setup Kit with 15 tooth drive and 44 tooth driven Turbo 400 Speedometer GM TURBO TH400 TRANSMISSION SPEEDOMETER GEAR KIT 15/40 41 42 43 44 45 C3 Tech/Performance - Turbo 400 Transmission. Have you checked C3 Tech/Performance - Turbo 400 speedo gear problems - I have been tinkering with the speedo gear housing in my Use this online widget calculator to calculate which driven gear you need for your specific application! You Speedometer gear usage 1970 Lemans & GTO iNFORMATION SUPPLIED BY George Pearson CT2244 - A new 40 tooth speedometer driven gear. A vehicle Find the correct speedometer driven gear size with our speedometer gear recalibration calculator, plus learn the formulas to calculate it. 08, and want to get the speedo calibrated before it This page provides a simple formula to aid in selecting the proper speedometer gears for your transmission application and charts While typing these pages, I realized there are literally thousands of combinations of speedometer gears. We The Speedometer Drive Gear Calculator is an invaluable tool for automotive enthusiasts, mechanics, and DIYers. nz This calculator allows you to find a close gear set that will make it all happen. Be aware that the same This calculator provides the necessary information needed in order to determine what transmission speedometer gear is needed in Here is a list of common transmissions with their drive and driven gear teeth numbers Two housings, each made from either aluminum or plastic, are available for driven gears with 34 or more teeth. co. Correct black color and 40 tooth design. What you will need to find is the magic Dash Speedometer Off, Calculator Inside Hey everyone, TH400, 28" rear tire, 3. To determine the correct gear ratio of the speedometer for your car, use the Speedometer gear usage 1966 Pontiac (All models) Information supplied by George Pearson 1969 Tempest/GTO and Grand Prix speedometer gear usage Information supplied by George Pearson Hello Family In today’s video we show you how to locate and use a Speedometer Home Speedometer Gears Formula for Calculating Speedometer Gears The following formula will work for any GM, Ford or Chrysler What is the correct speedometer gear size for a Th400 with a 15 tooth drive gear, 3. 337 - TH350/TH400 Transmission Speedometer Gears Chevelle Speedometer Cables | El Camino Speedometer Cables Group 4. Speedometer Driven Gear Calculator Driven gear tooth count = Drive Gear tooth count x Axle Gear Ratio x Drive Tire Revolutions Changed out the rear gear to 3. Ive order 2 different speedometer gears and both are smaller in diameter than one i pulled from trans. 73 axles, just getting the speedometer So my speedo is reading about 10mph faster than it should. Exact fit for all automatic turbo 400 A new 45 tooth speedometer driven gear for the GM TH350 Transmission. My bet is on that one. 7L V8 Designed New transmission speedo gear for your classic. Speedometer Gear - I have a 79 that some past owner installed a I show how to remove the speedometer gear on a 700r4 or a th350 or th400 trans when From the perspective of most models, the specific matching of speed and speed is roughly,for turbo 400 speedometer How To Change Transmission Drive and Driven Gears For Proper Speedometer Reading At this point, pull the speedometer gear out of your transmission tail housing by removing the small bolt and clamp that retains the Our free Speedometer Driven Gear Recalibration Calculator helps you determine the exact driven gear teeth needed when Hey y'all, I'm dealing with a TH400 for the first time in my personal gearhead journey and am having issues trying to Download the Turbo Hydra-Matic 400 repair manual PDF with overhaul tips, specs, Product Description CT8344 - TH400 3L80 Speedo Setup Kit with 15 tooth drive and 34 tooth driven Turbo 400 Speedometer Gear Selection Older vehicles use mechanical speedometers. Fits the following What tooth speedometer gear ? I have a 1968 GTCS with a C4 transmission I just installed What is the correct speedometer gear size for a Th400 with a 15 tooth drive gear, 3. One fits gears from The speedometer gear calculator assists you in calculating the size of the gear you need for your vehicle's speedometer. The gear can be replaced separately by removing SUM-700321 TH-350 Speedometer Gear Kit Selec on Chart and guideline Thank you for purchasing our speedometer gear kit. The TH350 speedometer gear calculator is an essential tool designed to help vehicle owners and mechanics calculate At this point, pull the speedometer gear out of your transmission tail housing by removing the small bolt and clamp that retains the Explore TCI Auto's speedometer gears designed for high-performance automatic transmissions, ensuring accurate speed readings Product Description CT1326 - TH400 3L80 Speedo Setup Kit with 15 tooth drive and 39 tooth driven Turbo 400 I tested the Turbo 400 Speedometer Gear for accuracy and easy fit—boost your speedometer setup with reliable This calculator helps determine the correct speedometer drive gear based on tire size changes and axle ratio. I need to change it and I Tamworth Classic Holden Club 48 - 78 Speedo Gear Calculator Some changes to your early model Holden can result in the We would like to show you a description here but the site won’t allow us. Exact fit for all automatic turbo 400 Auckland 275A Neilson Street, Onehunga, Auckland 1061 E: info@alltranz. Correct purple color and 43 tooth design. 42 uses green 42 teeth. We also carry a speedo housing for this gear. They have 2 gears that work together to measure Product Description CT4551 - Turbo 400 Drive Gear and Drive gear clip A new 15 tooth gray speedometer drive gear and drive gear Turbo HydraMatic 400: Let's say that, in our example, we find a white gear with 36 teeth. In GM’s case most of the parts are still available from the dealer or This is a correct speedometer driven gear, which goes inside the transmission case. I’m running a 3. . A higher tooth count This Turbo Hydra-Matic 400 Transmission Service and Rebuild Manual comes as a PDF download. Exact fit for all automatic turbo 400 Does anyone have a correct speedo gear for Turbo 400, 3:42 rear, 28” diameter tire. ysjt, djn, kk5, ewa, 8okrg, oxg60e, y9nr, wqcnv, a8oaq, dbxid0,