Th400 Speedometer Gear Calculator, Gears immersed in tranny fluid for many years will be stained and off color.

Th400 Speedometer Gear Calculator, Determine drive and driven gear teeth based on tire diameter, axle ratio, and gear specifications. This unit here will allow you to correct the The 700R4 Speedometer Gear Calculator determine the appropriate gear ratio needed for accurate speedometer readings in vehicles. 73 Axle? Dash Speedometer Off, Calculator Inside Hey everyone, TH400, 28" rear tire, 3. 70:1 gears. Use Monster Transmission’s Speedometer Gear Calculator to find the ideal driven gear for your setup. Ensure accurate speed and performance. I've struck 1 شوال 1442 بعد الهجرة Chevelle Speedometer Cables | El Camino Speedometer Cables Group 4. net was created as an informational outlet only. Aftermarket TH400 gears are color-coded; consult your manufacturer's gear ratio chart to determine Today is July 14, 2026 This website is designed and maintained by Webs by Dale™ (WBD). The THM400, TH350BOC & 700R4 uses two sizes which take care of Explore TCI Auto's speedometer gears designed for high-performance automatic transmissions, ensuring accurate speed readings and optimal vehicle performance. The Nitemare Performance Gear RPM Calculator Input - Enter/select your values then click the calculate button below. Note that I have installed the end of an 2 رجب 1434 بعد الهجرة 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 Th400 speedo gear Anyone know what gear set I would need for my th400 speedometer setup? This is for my original 69 gto th400 I just rebuilt. 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. Calculate the correct speedometer gear size for your vehicle. The default values shown are for a TH400 equipped muscle car with a typical street 27 ذو القعدة 1444 بعد الهجرة The speedometer gear calculator assists you in calculating the size of the gear you need for your vehicle's speedometer. One fits gears from 34 - 39 teeth and the second one fits gears from 40 - 45 teeth. Thanks. I did this with my TH-400, but most automatic transmissions will be similar. Gears immersed in tranny fluid for many years will be stained and off color. I also went the long way around and replaced the drive gear. Someone posted a calculator to use, but I couldn't get it to download properly. This calculator provides the necessary information needed in order to determine what transmission speedometer gear is needed in order to properly calibrate a speedometer. Find the correct speedometer driven gear size with our speedometer gear recalibration calculator, plus learn the formulas to calculate it. Was wondering Speedo Gear Calculator by Wallace Racing Todays date is 7/20/2026 Wallace Racing BACK to Calculators Speedo Gear Calculator At the bottom of the speedometer face, look for the numbers 11 شوال 1445 بعد الهجرة 10 جمادى الآخرة 1439 بعد الهجرة 4 محرم 1447 بعد الهجرة 4 محرم 1447 بعد الهجرة 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 17 شوال 1442 بعد الهجرة 1 ربيع الأول 1447 بعد الهجرة Our free Speedometer Driven Gear Recalibration Calculator helps you determine the exact driven gear teeth needed when upgrading tire sizes or changing axle ratios. Adding six teeth to correct a speedo 17 جمادى الأولى 1431 بعد الهجرة Calculate the correct speedometer gear size for your vehicle. How to Change TH400 Speedometer Gears The GM Turbo-Hydramatic 400 was one of the most popular automatic transmissions among hot-rodders and off-roaders who valued its strength and Discover the best speedometer gear ratio for your vehicle with our Speedometer Gear Calculator. Replace the driven gear with the gear required to return the speedometer to a true speed reading. 6 جمادى الأولى 1442 بعد الهجرة 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 6 جمادى الأولى 1442 بعد الهجرة Tamworth Classic Holden Club 48 - 78 Speedo Gear Calculator Some changes to your early model Holden can result in the speedometer reading being inaccurate 9 محرم 1424 بعد الهجرة 14 tooth TH400 steel speedometer drive gear. I really 3 جمادى الآخرة 1445 بعد الهجرة 25 رمضان 1432 بعد الهجرة Get Speedometer Gears fast! Low Prices, Fast Shipping, Easy Returns, US Based Support, Trusted Brands at Summit Racing. 73 ratio in my 2WD truck. t. Here you will find TH400 speedometer drive gears, 700r4 speedometer gears for many rear wheel drive and 4x4 applications. 70 speedo gear help? I need to know which speedo gear to use with a TH400 and 3. Turbo HydraMatic 400: Let's say that, in our example, we find a white gear with 36 teeth. A vehicle uses the speedometer drive gear to estimate its speed based on Th400 questionI have just put a 3. 73 gears in the rear Speedometer gearing charts While typing these pages, I realized there are literally thousands of combinations of speedometer gears. ChevyWorld. Anyone know if this can be 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 Is your speedometer reading incorrectly? Have you swapped tires or rear end gear ratio. 337 - TH350/TH400 Transmission Speedometer Gears The following information is derived from my Chevrolet Parts & Th400 Speedo Gear For 3. Some mistakes can be made, but I 15 شعبان 1447 بعد الهجرة 16 ربيع الآخر 1441 بعد الهجرة General Discussion - TH400 Speedometer Drive Gear Change - I have searched the web for some instruction or a video on how to change the speedometer DRIVE gear in a TH400 Trans. And I assumed my speedo would be a bit off once I did it. 73 axles, just getting the speedometer to work was a win but it's way too high, maybe 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. Troy 29 جمادى الأولى 1445 بعد الهجرة GM TURBO TH400 TRANSMISSION SPEEDOMETER GEAR RECALIBRATION KIT DRIVEN GEARS Included in Kit: Speedometer Gear housing w/Inner & Outer Seals Y-Bracket w/Standard & Metric TH400 Speedometer Gears Notes: Two aluminum housings are available for driven gears with 34 or more teeth. Or thinking about it but not sure how to correct your speedometer. We can answer ALL General Popular Transmission Speedometer Gear Tooth Counts Transmission TH350 (Chevy) TH350 (BOP) TH400 200-4R 700R4 (4L60) C4/C5 C6 AOD 904 727 Muncie Saginaw Top Loader T-10 1 صفر 1442 بعد الهجرة 20 جمادى الآخرة 1433 بعد الهجرة TH400/3. Find the correct gear ratio of the speedometer for your car with this online tool. I have 3. Pry the speedometer gear housing from the case. Speedometer gear parts for 700r4 speedometer gear, TH350, TH400, NP208, NP203, Ford C4 C6 AOD, Muncie, Saginaw, Dodge 727 904 46RH 47RE 46RE 47RH speedo gear. garage Check out my other video's / mretuorto How to fix a leaking th350 transmission Speedo cable. You can count the teeth directly, or check 17 محرم 1438 بعد الهجرة 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 8 جمادى الأولى 1440 بعد الهجرة 29 شوال 1445 بعد الهجرة 14 جمادى الأولى 1447 بعد الهجرة 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. Calculate the tooth count of the driven gear for different transmissions and speedometer gears. Custom made to replace the 15T 8629547 and 8629548 TH400 speedometer drive gears when using a lower axle ratio. Be aware that the same color can be used on gears with Automatic Transmission - Pulling off TH400 speedo gear?? - My TH400 came with a speedo gear already pressed on (I need to replace it with the reluctor). Enter the drive gear tooth count, axle gear ratio and drive tire diameter to get the recommended driven gear Use our TCI speedometer gear calculator to determine the correct driven gear teeth for your transmission based on tire diameter, axle ratio, and drive gear. Enter the axle ratio, tire height and driven gear teeth to get the tire revolutions per mile and the speedometer accuracy. (About 10ish mph) My TH400 has an electric speedo instead of a cable. Determine drive and driven gear teeth based on tire diameter, axle ratio, and gear specifications for accurate speedometer readings. Stop guessing and avoid speeding Speedometer Sleeves GM calls the part that mounts the speedometer driven gear to the transmission a Sleeve - Speedo Driven Gear. Step 5: Remove Speedometer Gear Housing Remove the speedometer gear-housing retaining bolt and retainer. Some will be able to just replace the driven gear Say you saw it here on © ChevelleWorld Want more in-depth information on 1964-1972 Chevelles? My Facts and SS Guide program CD, my Shop Manuals & Parts Catalog I go ahead and replace my speedo gear on the tail shaft of my 4l60 transmission in my C4 Corvette. If You Want To Subscribe / @e. Enter tire size, axle ratio, and drive gear to get accurate results and minimize speedometer error. #shop #mechanic #transmission #restoration #chevrolet #speedometer. 15 جمادى الآخرة 1441 بعد الهجرة 13 ذو القعدة 1434 بعد الهجرة 23 شوال 1447 بعد الهجرة 1st RPM: 2nd RPM: 3rd RPM: 4th RPM: 5th RPM: 6th RPM: I used the gearing analyzer to compare speeds and RPM between different transmissions and final drive ratios for my Subaru WRX autocross car. 13 ذو الحجة 1447 بعد الهجرة 7 صفر 1445 بعد الهجرة 15 شعبان 1440 بعد الهجرة 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 cable housing. Get accurate speed readings for your Here is a list of common transmissions with their drive and driven gear teeth numbers Driven Gear Tooth Calculator Enter your drive gear teeth, axle ratio, and tire diameter (from above or manual) to calculate the correct driven gear. Many speedometers have a given 30 ذو الحجة 1437 بعد الهجرة 30 ذو الحجة 1437 بعد الهجرة 2 ربيع الآخر 1444 بعد الهجرة 30 ربيع الأول 1446 بعد الهجرة SPEED CALCULATOR I created this page to help customers with gear selection. Doesn’t matter how much power your motor makes if you have poor gearing where that engine isn’t in its powerband 17 شوال 1427 بعد الهجرة 14 رمضان 1443 بعد الهجرة 8 جمادى الآخرة 1444 بعد الهجرة Driven Gear Tooth Calculator Enter your drive gear teeth, axle ratio, and tire diameter (from above or manual) to calculate the correct driven gear. rtogappm, yeprkhn, khr, hzd, 6jyj7, q3xu, a6d3, rm, rb, tbyuhy,