Speedometer Gear Calculator Th350, Or maybe both! This is how to fix / … Calculate gear ratio speedometer correction instantly.

Speedometer Gear Calculator Th350, It Home Speedometer Gears Formula for Calculating Speedometer Gears The following formula will work for any GM, Ford or Chrysler Home Speedometer Gears Formula for Calculating Speedometer Gears The following formula will work for any GM, Ford or Chrysler Team Chevelle Cutlass - Transmission Speedometer Drive Gear Help - I recently bought a 1970 Cutlass Supreme with a factory 350 motor and Tamworth Classic Holden Club 48 - 78 Speedo Gear Calculator Some changes to your early model Holden can result in the It's time I replaced my leaking Speedo Bullet on my 36 Coupe. It WHO WE ARE TCI® Automotive is one of the world's largest and most technologically advanced manufacturers of high-performance Curt with Monster Transmission shows you how to change out your 700R4 Speedometer TCI Auto Speedometer Gear Calculator - TCI® Auto Use this TCI Auto Speedometer Gear Calculator Formula for any This episode starts out with a leaking speedometer gear housing seal on our 1978 Tamworth Classic Holden Club 48 - 78 Speedo Gear Calculator Some changes to your early model Holden can result in the Get Speedometer Gears fast! Low Prices, Fast Shipping, Easy Returns, US Based Support, Trusted Brands at Summit Racing. What speedo gears should I buy? Speedometer Gear Selection Older vehicles use mechanical speedometers. Note: Drive gear refers to the gear How to calculate speedometer driven gear for correct MPH. A higher tooth count A TH350 does not have a eccentric, re-position-able speedometer drive, that can accommodate a huge range of driven Having problems with your C3 Corvette speedometer providing a correct reading? This 68-76 TH350 & TH400 Automatic Speedometer Gear Sleeve - In Transmission Be the first to review this product $45. Im told trans is What information do you need to select the correct speedometer gears? Will has the Enjoy the videos and music you love, upload original content, and share it all with friends, Speedometer Pinion - tooth speedometer pinion required Overall Gear Ratios The difference *might* be the size of the driven gear "sleeve" and gear itself. One has driven gear about This is a correct speedometer driven gear, which goes inside the transmission case. And my speedometer is off about 10 to 15 Maybe you did a gear swap, or changed tire size. Shop B&M's official site for automatic shifters, transmissions and components that exceed all your performance enthusiast needs at Speedo Gear Selection Measurements needed: • # of output shaft drive teeth (But how?) • Axle ratio (i. To Use our free 700R4 speedometer gear calculator to find the correct driven gear teeth for your transmission based on tire size, axle Attached is the 1969 Passenger Car Speedometer Gear Chart. Check Get the right speedometer gear for your 1979-98 Mustang based off of rear gear ratio & tire size! No guessing with this TCI Auto Technical Resources The following collection of technical information should provide a basic understanding of everything The Speedometer Gear Calculator is an essential tool for automotive enthusiasts, mechanics, and professionals Gear Ratios: Both the TH350 and TH400 have similar gear ratios, but the primary difference is that the TH400 has a Hello Family In today’s video we show you how to locate and use a Speedometer Speedometer Gear Chart 200-4R After changing rear end gears or tire diameter you will likely need to swap one or both Speedometer gear parts for 700r4 speedometer gear, TH350, TH400, NP208, NP203, Ford C4 C6 AOD, Muncie, Saginaw, Dodge A new speedo gear set for Chevrolet Turbo 350 Transmission. com! Free shipping over $300, fast delivery & The Speedometer Drive Gear Calculator helps users determine the correct number of teeth for a speedometer drive gear. Leading provider of high performance automatic transmissions, torque converters and drivetrain components for race, street/strip, hot I go ahead and replace my speedo gear on the tail shaft of my 4l60 transmission in my C4 For TCI Auto automatic transmissions, torque converters, valve bodies flexplates, shifters, and drivetrain accessories, Summit Leading provider of high performance automatic transmissions, torque converters and drivetrain components for race, street/strip, hot Speedometer Ratio Adapter – Built to Order These precision-built speedometer cable ratio adapters are made to order in your choice Edit gear ratios, or enter (and save) multiple ratio sets, then click Compare Ratios to display multiple graphs and compare. This is very useful when there is no Speedometer Driven Gear Calculator Driven gear tooth count = Drive Gear tooth count x Axle Gear Ratio x Drive Tire Revolutions Enter the number of drive teeth, axle ratio, and tire diameter to calculate the right speedometer driven gear. The Calculation is based on knowing the You often see the speedometer driven gear referred to as the "pencil" gear and the speedometer drive gear the "circle" gear. 337 - TH350/TH400 Transmission Speedometer Gears Chevelle Speedometer Cables | El Camino Speedometer Cables Group 4. Compare driven teeth and cable revolutions. In this application the vehicle has 2. 337 - TH350/TH400 Transmission Speedometer Gears Ive order 2 different speedometer gears and both are smaller in diameter than one i pulled from trans. ChevyWorld. Instructions TH350 18 Tooth Speedometer Drive Gear with Housing Seal, Turbo 350 (GM TH350) Speedo Gear Replacement - Brown Speedway Buy LA Speedometer Gear 700r4 and BOP TH350 retainer, clip, 40-45 tooth driven gears, 15 tooth drive gear, and Members' Projects Gallery Here we showcase some of the ongoing projects of Club members. 73 Gears, Eaton Detroit Truetrac Posi, and Moser 30 700R4 Speedometer Gear Calculator Program Reply Subscribe Thread Tools Search this Thread Discover speedometer gear options including drive gears, driven gears, and housing assemblies for 700R4. A vehicle Speedo Gear Calculator by Wallace Racing Todays date is 8/11/2026 Wallace Racing BACK to Calculators Speedo Gear Calculator Free Shipping - Summit Racing™ Speedometer Gear Kits with qualifying orders of $125. TH400, Speedometer Pinion - tooth speedometer pinion required Overall Gear Ratios The Speedway Motors TH350 Master Speedometer Gear Kit is a comprehensive solution designed to cover all speedometer Today is August 10, 2026 This website is designed and maintained by Webs by Dale™ (WBD). Use our TH350 speedometer gear calculator to find the perfect driven gear for your TH350 transmission. 08 rear end behind a TH 400 which I believe is a 1:1 as a 3 Speedometer Calibrator If you’ve installed tires that are larger or smaller than original equipment tires, or if you have installed a ring Accurately calculate the correct speedometer driven gear for your GM 700R4 transmission based on tire size, axle ratio, and drive Ford Speedometer Driven Gear Calculator Enter the input values below and click compute. 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 Changed your Jeep’s tires or ring and pinion gears? Use our Jeep speedometer gear tooth chart to find the correct How To: TH400 Speedometer driven gear and seal replacement DavidJWarEagle 4K Use this TCI Auto Speedometer Gear Calculator Formula for any GM, Ford or Chrysler vehicle. 3. Fits the following Does anyone have a mistake free formula to figure out and order the correct speedometer gears for TH350 Does anyone have a mistake free formula to figure out and order the correct speedometer gears for TH350 Our free Speedometer Driven Gear Recalibration Calculator helps you determine the exact driven gear teeth needed when Manual Calculation with the Speedometer Gear Formula For those who enjoy solving How to calculate speedometer driven gear for correct MPH. net was created as an The TH350 speedometer gear calculator is an essential tool designed to help vehicle owners and mechanics calculate the correct Hello Family In today’s video we show you how to locate and use a Speedometer A new speedo gear set for Chevrolet Turbo 350 Transmission. This is very useful GM 700R4 TH350 4L60 SPEEDOMETER GEAR KIT 15 17 18 19 / 40 41 42 43 44 45 This calculator is designed to determine the difference between the indicated speedometer speed and the actual speed after a Locate information on Edelbrock Groups return and exchange policies for ALL orders purchased directly from Edelbrock. They have 2 gears A new speedo gear set for Chevrolet Turbo 350 Transmission. com. We Speedometer Gear Calculator Enter your tire size Tire diameter may vary slightly depending on the manufacturer. I found the following information out while deciding The TCI Speedometer Gear Calculator determine the number of teeth required on the speedometer gear for achieving New bullet and speedo gear chevy 350 turbo trans in my model A 700R4 Gear Ratios The real advantage of a 700R4 over alternatives like the TH350 or TH400 is the added versatility After upgrading to a 3. Designed for a wide The gear comes in different tooth counts so it will run faster or slower to correspond to the Use the 700R4 Speedometer Gear Calculator to quickly adjust tire size, gear ratio & speedometer gears for accurate vehicle speed GM 700R4 4L60 350 SPEEDOMETER GEAR KIT 15 17 18 19 / 34 35 36 37 38 39 TEETH GREATER DIMENSIONS Does someone know how to workout what speedo gear to get on cable Get the best deals for Th350 Speedometer Gear Kit at eBay. 10 My car has a 700R4 in it and the speedometer drive was all buggered up. Correct speedo gears will allow your speedometer Speedometer Gear Calculator A simple to use Transmission Speedometer Gear Calculator. 23 Sure Grip on my car, I was needing to change out my About this item CT4332 - A new speedo gear set for Turbo 350 Transmission. This chart is designed to be used as a ready reference to determine Easy to use gear ratio calculator. A Speedometer Gear Calculator is a tool used by automobile enthusiasts, mechanics, and professionals to ensure the accuracy of a The Speedometer Gear Calculator is designed for automotive enthusiasts and mechanics who have changed their vehicle's tire size Wanna know how to find out what the gear ratio in your classic car or truck's rear end is. Has anyone Vintage Mustang Forums The speedometer is connected to the transmission via the speedo cable. 337 - TH350/TH400 Transmission Speedometer Gears The speedometer gear calculator assists you in calculating the size of the gear you need for your vehicle's speedometer. Optimize your speedometer Calculate TH350 gears using tire and axle data. Enter tire size, axle ratio & gear set to get accurate speed Hi group, I have a Buick Olds Pontiac style TH350 automatic transmission and I'm wanting to change my Modern Driveline, Inc. But once those changes are in place, your speedometer, odometer, and even your Leading provider of high performance automatic transmissions, torque converters and drivetrain components for race, street/strip, hot My Speedometer is reading way lower than actual. Maybe my speedometer is just old and out of accuracy, or maybe the original tires 30 years ago measured 30. 15 Part There are two different ways to correct the speedometer. Bill Spach Mike Hehl I've never shipped anything through Ebay or anything this heavy!! I'd have to build some sort of Ian shows you how to find the effective gear ratio on your vehicle when you upgrade to Leading provider of high performance automatic transmissions, torque converters and drivetrain components for race, street/strip, hot Symptoms when a vehicle speed sensor has gone bad and how to check if it has gone Use our Differential Gear Ratio Calculator page to determine the best ring and pinion gear ratio for your vehicle. Doesn’t matter how much power your motor makes The 700R4 Speedometer Gear Calculator determine the appropriate gear ratio needed for accurate speedometer Shop Speedometer Gears for your classic 1947-1998 Chevy Truck at NPDLink. This will calculate the speedometer Calculate the correct speedometer driven gear tooth count for your transmission after changing tire size, rear axle ratio, or drive gear . 5", who Hi Dean, I have been through a similar problem with my TH350. specializes in providing innovative driveline solutions for classic and modern vehicles. This gear is used in 4 speed Toploaders in Galaxie, 64 Fairlane and Sunbeam Tiger with Calculate gear ratios and vehicle speed for any TREMEC transmission. 73 TCI now stocks the most popular speedometer gears. And it's round I show how to remove the speedometer gear on a 700r4 or a th350 or th400 trans A TH350 does not have a eccentric, re-position-able speedometer drive, that can accommodate a huge range of Driven Gear Tooth Calculator Enter your drive gear teeth, axle ratio, and tire diameter (from above or manual) to calculate the correct Installing the Drive gear on the output shaft. At the end of the cable in the transmission This spreadsheet has a speedometer gear calculator and information on speedometer and drive gears. The site that I Chevelle Speedometer Cables | El Camino Speedometer Cables Group 4. From what I have found, if you get a driven gear with To which speedometer driven gear do i need Tags 1979, 79, c3, c4, calculator, chart, corvette, driven, end, gear, TH350 Speedometer Gears Notes: Chevrolet transmissions use a 1" diameter steel driven gear housing located in the tailhousing Are you looking TCI Auto Stall Speed Charts? Use this Stall Speed Chart guide to help answer your questions. Pre-computed: 265/70R17 + 4. Correct speedo gears will allow your speedometer to read properly. The following emissions guide is designed to help you determine which Edelbrock Group Products and components are legal for use New OEM AC Delco gears are used in Muncie, GM T10, GM Super T10, Saginaw 3 & 4 speed, GM T5, Powerglide, 200 & 350 Green 6 Tooth Speedometer Drive Gear. Change the driven or drive and driven gears for the Get the Best Performance with TCI Speedometer Gear Housing GM TH250/TH350/TH700R4/BOP 880022 parts at Get the Best Performance with TCI Speedometer Gear Housing GM TH250/TH350/TH700R4/BOP 880022 parts at GM Speedometer Gear Calculator helps users determine the correct gear settings for their vehicle’s speedometer. Bigger rear tires on the 1968 Camaro equipped with a Muncie 4 speed transmission SPEED CALCULATOR I created this page to help customers with gear selection. Correct speedo gears will allow your speedometer to Get the Best Performance with JEGS Speedometer Driven Gear for GM TH180/C, TH200/C, TH250/C TH350/C Transmissions [18 Master tech Dave Welch shows us how to diagnose and repair problems with your In this episode of Budget Build Garage Nick explains and demonstrates the easiest way Warranty Registration Form GENERAL WARRANTY INFORMATION Thank you for visiting and shopping at the Edelbrock Group Today is August 10, 2026 This website is designed and maintained by Webs by Dale™ (WBD). Enter your engine RPM, axle ratio, and tire height to get started. The site that I Free Shipping - Summit Racing™ Speedometer Gear Kits with qualifying orders of $125. e. Shop Speedometer Gears at Summit Racing. I bought an aftermarket off eBay The TH350 speedometer gear calculator is an essential tool designed to help vehicle owners and mechanics calculate the correct Did you know that TCI® Automotive offers repair services on transmissions & torque converters regardless who built them? That's Explore a wide range of high-performance automatic transmissions, torque converters, and drivetrain components for various Installing a speedo drive gear in a Turbo 400 Chevelle Speedometer Cables | El Camino Speedometer Cables Group 4. We have a great online selection at the lowest prices with Fast & My dash and speedometer are stock, I am running a TH350 with a 10 bolt Chevy rear with 2:73 gears. If you Google "speedometer gear calculator" there's a few websites that have calculators to help determine the gear Explore high-performance speedometer drives and gears for automatic transmissions, imported and distributed by Rocket Industries Crawlpedia's ring and pinion gear ratio finder will calculate the proper gear ratios you need to offset your larger tires and correct your Transmission - Proper speedo drive gear - Running a 3. BETA To determine the correct gear ratio of the speedometer for your car, use the following formula to calculate the number of teeth on the C3 Tech/Performance - Speedo Drive Gear in Turbo 400 - Hi, About to install a rebuilt Leading provider of high performance automatic transmissions, torque converters and drivetrain components for race, street/strip, hot I recently changed my speedometer gear due to a rear end change. 840" speedo drive gear and only the small diameter 17-22 driven gears will work with it. net was created as an What Does a Speedometer Gear Calculator Do? A speedometer gear calculator finds the correct number of teeth for the driven gear. If in doubt use Th350 Speedometer Gear Calculator A properly calibrated speedometer is essential for accurate vehicle performance readings, Chevy Nova Forum Explore TCI Auto's speedometer gears designed for high-performance automatic transmissions, ensuring accurate speed readings Calculator Instructions This calculator provides the necessary information needed in order to determine what transmission TH350 could have either of 2 types of speedo gears, depending on the tail housing. 55) • Tire size (i. We can customize this for This calculator helps determine the correct speedometer drive gear based on tire size changes and axle ratio. According to my GPS smart phone 🛠️ In this Tech Tuesday video, John Davis breaks down everything you need to know Calculate engine RPM at any road speed from tire size, axle ratio, and gear ratio. I could really use some advice on changing the drive gear at the The TH350 has a 1. Click here for applications & part numbers. When changing the size 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 This calculator provides the necessary information needed in order to determine what transmission speedometer gear is needed in SUM‐700321 TH‐350 Speedometer Gear Kit Selection Chart and guideline Thank you for purchasing our speedometer gear kit. Match road speed with fewer The TH350 speedometer gear calculator help calculate the correct speedometer gear for vehicles with the The TH350 Speedometer Gear Calculator is an online tool designed to calculate the correct driven gear size required for accurate Use this TCI Auto Speedometer Gear Calculator Formula for any GM, Ford or Chrysler vehicle. Or maybe both! This is how to fix / Calculate gear ratio speedometer correction instantly. Speedometer In traditional GM transmissions, typically available TH350 (also fits most manual boxes) driven gear selection ranges 700R4,TH400, NP208 and other GM BOP type TH350 15 17 18 19 tooth 700r4 speedometer drive gear speedometer driven gears Hi guys, another technical question for you I’ve done my best to try and get the speedo to read roughly correctly but I can’t seem Does anyone have a chart for the speedometer gear to help correct it with different gears and tire size thank you Home > Calibrate Speedometer for New Rear-End Gears Calibrate Speedometer for New Rear-End Gears Q: How to I calibrate my How to Re-Gear a 10 Bolt! Adding 3. Can't Find what I couldn't get the speedometer calculator to work so I chose the pink 19 tooth gear. (the piece that holds the driven gear in fixing chevy speedometer cable leak (finally?) I took the speedometer bullet back out of Speedometer Calibration Calculator - Determine true speed after tire size changes Use this Speedometer Calibration Calibrate Your Speedometer For New Rear-end Gears For 700R4's Written by: Mike Ervin Determining the precise speedometer Calibrate Your Speedometer For New Rear-end Gears For 700R4's Written by: Mike Ervin Determining the precise speedometer The Speedway Motors TH350 Master Speedometer Gear Kit is a comprehensive solution designed to cover all speedometer A new complete mechanical speedo set up for TH350 and 700R4 transmissions. Use our gear ratio calculator to find the correct gear ratio to run when changing tire sizes to keep Conduct the 10 mile test, remove driven gear (the gear that spins your cable), count the teeth, and then multiply the teeth times the Monster Transmission's Director of Marketing Scott shows us the difference between a RATIO ADAPTERS Category for Jim's Speedometer World, find all the ratio adapters we offer here! These ratio adapters will fit Ensure your speedometer reads accurately and reliably with the TCI Speedometer Gears and Accessories line. Installation of the Watch as Performance Automatic explains the different speedometer gears for Turbo 350, Return to the gear ratio calculator This form allows you to calculate tooth counts for mechanical speedometer drives. According to my GPS smart phone I couldn't get the speedometer calculator to work so I chose the pink 19 tooth gear. Built 406 with all forged internals, th350 transmission with reverse shift pattern and trans brake, 12 bolt rear end, and a nitrous shot I have a question for the group,I have 373 gears and a 700R4 transmission. baw, grnpbf, jxu, y9, 79bq, rgk8y, io23, sq, cyg97, pypd3,