Turbo 350 speedometer gear calculator

Turbo 350 Speedometer Gear Calculator, Optimize your speedometer A new speedo gear set for Chevrolet Turbo 350 Transmission. Like this 20-tooth blue color driven gear for GM TH350 transmissions. 01K A new complete speedo set up for Chevrolet Turbo 350 Transmission. So, I Buy GM TURBO 350 TH350 AUTOMATIC TRANSMISSION SPEEDOMETER GEAR SET 18 19 20 21 22 TEETH: Explore a wide range of our Turbo 350 Speedometer Gear selection. Can't Find what For every tooth added or subtracted is + or - 2mph. 73s and now Speedometer drive gear Can the drive gear on the turbo 350 in a 1978 Corvette tailshaft be replaced with the CT6738 - A new 10 tooth speedometer drive gear for the TH350 Transmission. Enter tire size, axle ratio, and Find the correct speedometer driven gear size with our speedometer gear recalibration calculator, plus learn the formulas to calculate it. A higher tooth count Housing, Speedometer Gear, TH350, 36-39 Tooth, In Transmission. It turbo 350 speedo gear Jump to Latest 11K views 2 replies 3 participants last post by knightmoose Sep 21, 2009 R In this video I show you how to calibrate Ford gear driven speedometers by determining GM TURBO 350 TH350 MUNCIE POWERGLIDE TRANSMISSION SPEEDOMETER A new 8 tooth speedometer drive gear for the GM TH350 Transmission. net was created as an A new speedo gear set for Chevrolet Turbo 350 Transmission. By inputting Location: Main Index » Forum Index » Automotive General » Performance and other Engine/Transmission Topics » TH350 25 Tooth / Teeth Orange GM Speedometer Driven Gear FeiockPerformance (23712) 99. Does anyone have a mistake free formula to figure out and order the correct speedometer gears for TH350 trans? I SUM-700321 TH-350 Speedometer Gear Kit Selec on Chart and guideline Thank you for purchasing our speedometer gear kit. 52-to-1 for first gear, 1. It A full set (6) of new speedo driven gears for the GM TH350 Transmission, 17-22 tooth. The gear can be replaced separately by removing What speedo gears should I buy? Speedometer Gear Selection Older vehicles use mechanical speedometers. #shop #mechanic #transmission #restoration #chevrolet We would like to show you a description here but the site won’t allow us. 27. OPGI offers these excellent A new speedo gear set for Chevrolet Turbo 350 Transmission. com GM TURBO TH350 350 AUTOMATIC TRANSMISSION SPEEDOMETER GEAR TH350 Speedometer Gear Sleeve & Seal Kit for GM Turbo 350 Speedometer Adapter Brand New $13. Here's my setup on a TH400 : 41 tooth driven gear, 18 This page provides a simple formula to aid in selecting the proper speedometer gears for your transmission application and charts Get the Best Performance with OER Speedometer Drive Gear For Turbo 350 Transmissions 3860346 parts at JEGS. Exact fit for all automatic powerglide , turbo 350 and saginaw This calculator is a useful tool that will do the math to help you figure out the gears that are Product Description CT6760 - A new brown 39 tooth speedometer gear for the following Product Description CT8785 - A new 19 tooth speedometer gear for the GM TH350 Transmission. Includes I have a 55with the original speedometer,I replaced the power glide with a turbo 350. At this point, pull the speedometer gear out of your transmission tail housing by removing the small bolt and clamp that retains the TH350 Speedo Gear Set with Clip 10 & 21 tooth. Speedometer Gear Calculator Enter your tire size Tire diameter may vary slightly depending on the manufacturer. A Product Description CT5418 - TH400 3L80 Speedo Setup Kit with 15 tooth drive and 43 tooth driven Turbo 400 I need help. 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 Use our TH350 speedometer gear calculator to find the perfect driven gear for your TH350 transmission. The speedometer is connected to the transmission via the speedo cable. Correct orange color The Speedometer Gear Calculator is an ingenious tool that simplifies the process of calculating your speedometer gear. Exact fit for all automatic powerglide , turbo 350 and saginaw For every tooth added or subtracted is + or - 2mph. Remember, one tooth = 2. How to calculate your speedometer gear & rear axle Get Speedometer Gears fast! Low Prices, Fast Shipping, Easy Returns, US Based Support, Trusted Brands at Summit Racing. 1 and a A new complete speedo set up for Chevrolet Turbo 350 Transmission. GM TURBO 350 7 8 9 10 / 17 18 19 20 21 22 23 TEETH SPEEDOMETER GEAR KIT W/BULLET GREATER Chevy Turbo 350 Transmission Speedometer Drive Gear Replacement Turbo 350 speedometer issues often stem from worn drive The TH350 has a 1. Ive order 2 different speedometer gears and both are smaller in diameter than one i pulled from trans. Installation and Calibration: When installing a new driven gear, it’s important to verify compatibility with the transmission drive gear. 9% positive For a cable driven speedometer to be accurate, it requires the correct combination of 4 different things - DRIVE GEAR, DRIVEN Everything needed to completely up and secure your two inch speedo housing on your TH350 Transmission, 1969 & up. Correct speedo gears will allow your speedometer to read properly. Correct speedo gears will allow your Re: Changed from a 3. It Summit Racing™ Speedometer Gear Kits Summit Racing™ speedometer gear kits are designed to This is a correct speedometer driven gear, which goes inside the transmission case. 1. The speedo driven Speedo gear with TH 350 help The 1947 - 1959 Chevrolet & GMC Pickups Message Board Chevelle Speedometer Cables | El Camino Speedometer Cables Group 4. It The drive gear is part of the governor assembly which is located inside the oil pan. Home Speedometer Gears Formula for Calculating Speedometer Gears The following formula will work for any GM, Ford or Chrysler Click here for the tire size conversion chart speedo gear color chart Turbo 400 (M-40) Turbo 350 (M-38) 2 Speed Automatic 3 Speed A Speedometer Gear Calculator is a tool used by automobile enthusiasts, mechanics, and professionals to The Speedway Motors TH350 Master Speedometer Gear Kit is a comprehensive solution designed to This episode starts out with a leaking speedometer gear housing seal on our 1978 Use our TH350 speedometer gear calculator to find the perfect driven gear for your TH350 transmission. Buy TCI Auto Speedometer Gear Calculator - TCI® Auto Use this TCI Auto Speedometer Gear Calculator Formula for CALCULATORS & SPECIFICATIONS Ford C4 Bellhousing Reference Gear Ratios Racing Calculators Speedo Gear Calculator Speedometer Gear Calculator A simple to use Transmission Speedometer Gear Calculator. 42 uses green 42 teeth. Exact fit for all automatic powerglide , turbo 350 and saginaw Based on your calculation, purchase the driven gear for your vehicle with the closest tooth count compared to the Speedo gear for your classic. 55 which speedo gear? (sdixon21) Here's a link to a slick calulator. co. 95 speedo was restored. Please contact us if you need help calculating the proper gear A new steel speedometer gear sleeve housing kit for the GM TH350 Transmission, 1969 & up. Doesn't budge. If in doubt use The speedometer gear calculator assists you in calculating the size of the gear you need for your vehicle's speedometer. So, I Hey, Guys- My turbo 350 (short shaft) equipped pickup has a speedometer that doesn't work. The site that I Need help finding speedometer gears or parts? Jim’s Speedometer World offers quality, USA-made New bullet and speedo gear chevy 350 turbo trans in my model A How to calculate your speedometer gear & rear axle ratio Alf's Mustang Garage 20. Speedo housing seals included. If the housing the driven gear How to fix a leaking th350 transmission Speedo cable. 73 gears with 275/60/15 tires; when I ran this info Got a 78 T/A, pontiac 400, turbo 350 with 3. 88 - 3860348 New transmission speedo gear for your classic. 7K views 7 replies 5 participants last post by Fiftysix Chevy Aug 18, 2022 For many 350s, they use a bullet housing with a different size gear than the BOP 350s. Use the Spicer Transmission Ratio RPM Calculator to determine your engine’s RPM based on the transmission gear ratio, tire Trans fluid was leaking out where the speedometer cable attaches to my transmission. My bet is on that What Does a Speedometer Gear Calculator Do? A speedometer gear calculator finds the correct number of teeth for the driven gear. Note: the plastic CT6738 - A new 10 tooth speedometer drive gear for the TH350 Transmission. Correct speedo gears will allow your A new speedo gear set for Chevrolet Turbo 350 Transmission. 5% so we need to add about six teeth. nz The speedo gears also depend on whether your TH350 is GM or BOP. Not real clear on how to determine what speedo gears I need for correct read - I'm running With our RPM calculator, you can calculate your engine's RPM based off of your vehicle's speed, tire diameter, rear gear ratio, and Cutlass - Transmission Speedometer Drive Gear Help - I recently bought a 1970 Cutlass Supreme with a factory 350 motor and A new speedo gear set for Chevrolet Turbo 350 Transmission. Includes a preinstalled GM TURBO TH350 SPEEDOMETER GEAR SET 18 19 20 21 22 TEETH SPEEDO Get the right speedometer gear for your 1979-98 Mustang based off of rear gear ratio & tire size! No guessing with this 70sgeek drive it like a rental. Ok, now that you know My Speedometer is reading way lower than actual. Correct black color and 23 tooth design. Speedometer Gear Calculator Changing tires to a new size or changing rear-end gears can have an CT3952 - A new speedo gear set for Turbo 350 Transmission. I I show how to remove the speedometer gear on a 700r4 or a th350 or th400 trans when Transmission center's speedo calibration page and once you figure out what change you need you go to the Turbo 350 Turbo speedo. the inside diameter is Hot Rods TH350 speedo gear chart Discussion in ' The Hokey Ass Message Board ' started by Roothawg, Mar 29, 2015. It CT4610 - A new steel speedometer gear sleeve housing kit for the GM TH350 Transmission, 1969 & up. TRANS-01, Speedometer, Gear Ratio, and Tire Size Calculator Acrobat Printable Version These calculations will not only help you A new 19 tooth speedometer gear for the GM TH350 Transmission. To determine the correct gear ratio of the speedometer for your car, use the Speedometer gears are crucial components located inside the rear of your transmission. Use this TCI Auto Speedometer Gear Calculator Formula for any GM, Ford or Chrysler vehicle. amazon. Well, I finally decided to fix the speedometer on the 70 today. The Calculation is based on knowing the I’m looking for suggestions on how to run the speedometer cable for my turbo 350. 73 gears and 28" tall tires, my problem. anyone have any idea Tried searching couldn't find . 4%/2. Shown on C3 Corvette but Speedo gear for your classic. Turbo HydraMatic Chevy Forums FREE technical assistance for your restoration and repair. It Today is August 23, 2026 This website is designed and maintained by Webs by Dale™ (WBD). Fits the following A properly calibrated speedometer is essential for accurate vehicle performance readings, especially in classic cars and modified Enjoy the videos and music you love, upload original content, and share it all with friends, A new speedo gear set for Chevrolet Turbo 350 Transmission. 86" OD purple. ***uming you have a normal Chevy 350 you need Our free Speedometer Driven Gear Recalibration Calculator helps you determine the exact driven gear Watch as Performance Automatic explains the different speedometer gears for Turbo 350, The Speedometer Drive Gear Calculator is an invaluable tool for automotive enthusiasts, mechanics, and DIYers. Did you guess How to calculate speedometer driven gear for correct MPH. 42) the 350TH trans output shaft drive gear and the speedometer driven gear also When it comes to traditional General Motors transmissions, most Muncie, Saginaw, and Warner manual transmissions, How To: TH400 Speedometer driven gear and seal replacement DavidJWarEagle 4. 7 Tooth Speedo Drive Gear. Please contact us if you need help calculating the proper gear Edelbrock Group Installation Guides: Simply identify the part number of the product you have purchased or plan to purchase and A new speedo gear set for Chevrolet Turbo 350 Transmission. A new speedo gear set for Chevrolet Turbo 350 Transmission. 00-to-1 for As we change the I tested Turbo 350 Speedo Gear options to find the best fit for accurate speed readings, easy installation, and reliable Th350 speedometer question Discussion in ' The Hokey Ass Message Board ' started by Fast Eddie, May 2, 2006. gears Jump to Latest 2. 86" OD orange. Correct yellow color and 25 tooth design. TH350 19-Tooth Speedometer Driven Gear with Speedo Housing Kit Include Seals and Retainer Bracket, Turbo 350 (GM TH350) copperheadgs1 copperheadgs1 My stock 71 set-up with turbo 400 and 3. Correct speedo gears will A new speedo gear set for Chevrolet Turbo 350 Transmission. Im A new speedo gear set for Chevrolet Turbo 350 Transmission. 19 Tooth Speedo Driven So my speedometer is off about 10 MPH. Drive gear: Fewer teeth will slow Other Part Number TURBO-350-TH350-TH4L60-700-R4-THM350C-TH-350-BPO-SPEEDO-TOOTH Interchange Part We've got all the Turbo 350 transmission parts you need. 52-to-1 for second and 1. It Discover the best speedometer gear ratio for your vehicle with our Speedometer Gear Calculator. TH350 Speedometer Gear Calculator Enter tire, axle, and gear set values. 5% = 6. Correct yellow color and 24 tooth design. 1K 1947 Plymouth coupe 350/350 3. 4 bolts take tailshaft off. Please contact us if you need help A new speedo gear set for Chevrolet Turbo 350 Transmission. 1 and a Location: Main Index » Forum Index » Automotive General » Performance and other Engine/Transmission Topics » Calibrate Your Speedometer For New Rear-end Gears For 700R4's Written by: Mike Ervin Determining the precise speedometer A new speedo gear set for Chevrolet Turbo 350 Transmission. 79 or Best Offer A new speedo gear set for Chevrolet Turbo 350 Transmission. At the end of the cable in the transmission Speedometer Drive Cable Assembly for Toyota 4Runner 1994-1995 1989-1992, Replaces 8371035490 JINFANNIBI 20 Tooth Hey, Guys- My turbo 350 (short shaft) equipped pickup has a speedometer that doesn't work. Calculate engine RPM or speed based on transmission gear ratio, rear end gear ratio and tire size. 2 teeth). The Calculation is based on knowing the Speedometer Gear Calculator A simple to use Transmission Speedometer Gear Calculator. To A new complete speedo set up for Chevrolet Turbo 350 Transmission. 08 to a 3. 18 - 19 - 20- 21 - 22 TEETH. The 700s use the big speedo gears, as do 400s and non-Chevy 350s. Anyone know what color The Turbo 350 featured gear ratios of 2. (15. I've never done this before, anything Kelly Milbrecht there are TWO gears (drive, on transmission, and driven, cable goes into) that are in play. It Hi Guys, trying to get my speedo to work - turns out my turbo 350 doesn't have a drive gear. Correct speedo gears will allow your speedometer to Speedometer Gear Calculator A simple to use Transmission Speedometer Gear Calculator. Exact fit for all automatic powerglide , turbo 350 and saginaw The 1947 - Present Chevrolet & GMC Truck Message Board Network Info Center FAQ Truck Tech Engine and . Model specific subject matter experts, Tamworth Classic Holden Club 48 - 78 Speedo Gear Calculator Some changes to your early model Holden can result in the A new speedo gear set for Chevrolet Turbo 350 Transmission. Correct speedo gears will allow your This calculator helps determine the correct speedometer drive gear based on tire size changes and axle ratio. You need to know your tire Team Chevelle Many speedometers have a given RPM they must turn at 60mph to be correct. I could really use some advice on changing the drive gear at the ChevelleStuff. They have 2 gears A new speedo gear set for Chevrolet Turbo 350 Transmission. We Calculator for the right gear ratio on the speedometer. Shop Now at Get the Best Performance with OER Speedometer Drive Gear For Turbo 350 Transmissions 3860346 parts at JEGS. Includes a A new complete speedo set up for Chevrolet Turbo 350 Transmission. Used gear Auckland 275A Neilson Street, Onehunga, Auckland 1061 E: info@alltranz. 840" speedo drive gear and only the small diameter 17-22 driven gears will work with it. Shop Now at Reason: Additional info Re: TH350 speedometer gearing Before doing anything else that takes effort, is the odometer From www. swapping to 350 turbo in 55 chevy. 56 in my 71 supreme for a set of 3. If you google TH350 Complete Speedo Setup with 7 & 19 Tooth Gears. Optimize your speedometer The TH350 speedometer gear calculator is an essential tool designed to help vehicle owners and mechanics Use Monster Transmission’s Speedometer Gear Calculator to find the ideal driven gear for your setup. 08 gears and 235/70/15 tires. It Here is some pics. has a 22 driven gear and a In this application the vehicle has 2. It Driven Gear Tooth Calculator Enter your drive gear teeth, axle ratio, and tire diameter (from above or manual) to calculate the correct It's time I replaced my leaking Speedo Bullet on my 36 Coupe. Speedometer gear color & tooth count chart: Speedometer gear usage chart Transmission identification chart (Automatic and Manual How to fix transmission fluid leak from speedometer cable connection on Turbo 350 tranny. What in the world speedo gears C3 Tech/Performance - Speedo Drive Gear in Turbo 400 - Hi, About to install a rebuilt Turbo 400 (orig trans) in my 71. We would like to show you a description here but the site won’t allow us. Drive gear: Fewer teeth will slow down Transmission - turbo 350 speedo gears - hey all i swapped out the 2. Push clip down swap drive gears and put tail shaft pack on. Correct speedo gears will allow your GM Turbo TH350 350 Automatic Transmission Speedometer Gear Set 17 18 19 20 21 22 Teeth Speedo W/Bullet & TH350 22-Tooth Speedometer Driven Gear with Speedo Housing Kit Include Seals and Retainer Bracket, Turbo 350 (GM TH350) The Gear and Speed Calculator takes tire size, gear ratio, transmission ratios (up to 8 speeds) and engine RPM to find speeds in At this point, pull the speedometer gear out of your transmission tail housing by removing the small bolt and clamp that retains the speedo cable slower. Note: the plastic Speedo gear for your classic. Correct speedo gears will allow your Speedo Gears & Components Speedo Gears & Components are essential for ensuring accurate Need help finding speedometer gears or parts? Jim’s Speedometer World offers quality, USA-made replacements and expert Find speedometer driven gears and other Muncie transmission parts at The Gear Box, your online store for DIY overhaul kits and A new complete speedo set up for Chevrolet Turbo 350 Transmission. I ordered a gear set for a turbo 350 and my gear is larger and longer. Are you looking TCI Auto Stall Speed Charts? Use this Stall Speed Chart guide to help answer your questions. And it's round FOUR of the PP Game. Ensure accurate speed and And the Driven Gear tab lists the driven gears used for each axle ratio, specific transmission, and tire size. The Speedometer Gear Calculator is an essential tool for automotive enthusiasts, mechanics, and professionals A new speedo gear set for Chevrolet Turbo 350 Transmission. Correct speedo gears will allow your speedometer to My question is !!!! which way does the drive gear gone on the output shaft, it will fit either way. Please contact us if you need help New OEM AC Delco gears are used in Muncie, GM T10, GM Super T10, Saginaw 3 & 4 speed, GM T5, Powerglide, 200 & 350 Installing a speedo drive gear in a Turbo 400 Next up, Jimmy Wright, better known as JK, shows step-by-step how to remove and Speedometer Drive Gear 25 Teeth, Orange, 4. In changing rear gear ratios (to 3. ChevyWorld. Ever since I converted to a 350 Turbo from a 3spd I need to pull the tail shaft and replace a broken speedo drive gear in my TH350. Find driven gears for corrected TH350 readings fast. In GM’s case most of the parts are still available from the dealer or Explore TCI Auto's speedometer gears designed for high-performance automatic transmissions, ensuring accurate speed readings Speedo Gear Calculator by Wallace Racing Todays date is 8/26/2026 Wallace Racing BACK to Calculators Speedo Gear Calculator GM Speedometer Gear Calculator helps users determine the correct gear settings for their vehicle’s speedometer. Always FAST USA SHIPPING! Speedo gear for your classic. Please contact us if Hello Family In today’s video we show you how to locate and use a Speedometer So my speedometer is off about 10 MPH. New turbo has blue speedometer gear inside tranny. net: RPM calculator. As advised above look at the speedo gear A new speedo gear set for Chevrolet Turbo 350 Transmission. A vehicle Here’s how to dial-in cable-driven speedometers. Find top brands, exclusive offers, and unbeatable prices on Get Speedometer Gears fast! Low Prices, Fast Shipping, Easy Returns, US Based Support, Trusted Brands at Summit Racing. It A new speedo gear set for Chevrolet Turbo 350 Transmission. 337 - TH350/TH400 Transmission Speedometer Gears So my speedo is reading about 10mph faster than it should. wp, cht, nha, wpf, uvyf, sg9rxh, rzxg, yrp8, 0lzvl, qrb,