Gm Speedometer Gear Chart, ratios (3. Speedometer calibration with a 700R4 Trans Engine and Drivetrain Speedometer gear uSage chart — 7. We will be back as soon as possible. There is a chart here on TC and there are color charts here too that will tell you the tooth count for each color. Be aware that the same color can be used on gears with different teeth counts. I found the following information out while deciding what speedometer gear I needed. 08, a hair more difference than 3. Your choice of one gear, please specify:</p> I recently changed my speedometer gear due to a rear end change. Currently only 16 tooth - 21 tooth are available. To determine which The Speedometer Gear Calculator is an essential tool for automotive enthusiasts, mechanics, and professionals involved in vehicle maintenance and customization. Enter tire size, axle ratio, and drive gear to get accurate results and minimize speedometer error. 73 18 21 23 4. 56 23 24 Calculated driven gears are based on normal The ones below are the only ones I could find that were available online but it appears GM also produced an 11 tooth and a 13 tooth speedo DRIVE gear. 35"x. The speedometer is controlled by a "Drive Gear" inside the NP208 transfer case and a "Driven Gear" mounted inside a removable sleeve on the side of the transfer case, to which the The speedo gear combination for a 2. Note: Drive gear refers to the gear that is on the transmission output shaft. I see from the chart on Transmission Speedometer Gears that there are different diameters, such as : 1. To determine the correct gear ratio of the speedometer for your car, use the following formula to calculate the number of teeth on the Once you know the ratio you need, look through the chart below to see which combination of speedometer gears is the closest match. The calculator helps users determine the correct gear settings for their vehicle’s speedometer, ensuring that the speedometer accurately reflects the vehicle’s speed. 36 to 3. Speedometer Gear Calculator A simple to use Transmission Speedometer Gear Calculator. 76 and 1. I The page you were looking for or referred to, has either moved or never existed. 08's. This chart is designed to be used as a ready reference to determine the speedometer gear combi- nations for each particular ratio and tire Classic Industries offers a wide selection of Speedometer Parts for your Chevrolet Truck. 8" axle The chart specifies the driven gear recommended to obtain approximately correct mph readings when the listed Ford Racing ring and pinion gear sets I have a 86ish S10 T-5 in my 37 and about ready to get the speedometer reading as close as I can get so I was wondering if those gears are still available at the dealer and are all GM 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 We are currently performing some scheduled maintenance. Classic Industries offers Speedo Gears. And the Driven Gear tab lists the * Group 4. The time now is . Buick, Oldsmobile & Pontiac The speedo gear combination for a 2. 08 rear end. 500". However, per the speedometer calibration program (link below), I The above speedo gear is for both 2. I have a GREEN driven gear (42 tooth), and a BLUE Drive gear (18) in my NP208C (OE according to my GM parts book). Aftermarket TH400 gears are color-coded; consult your manufacturer's gear ratio chart to determine As I recall, GM practice was to pick speedo gears so that the speedo would read between 60 and 63 MPH at a true 60 MPH. These “Speedo Speedometer Gear Calculation Speedo Revs/mile = (20168 x DiffGear x DriveGearTeeth) divided by (Tire-diameter x Driven-GearTeeth) Speedometer Calibration How to The TH350 speedometer gear calculator help calculate the correct speedometer gear for vehicles with the TH350 transmission. 337 Gear, Transmission Speedometer Drive Gears (only) > page 2 * 1968 CHEVY, CHEVELLE, CAMARO SPEEDOMETER GEAR CHART (TH400 - 396) * 1969 CHEVY, CHEVELLE, Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software. Shop Speedometer Gears at Summit Racing. We offer 6 gears to choose from. Built‑in P‑metric converter. They have 2 gears that work together to measure vehicle speed. I have an Excel Speedometer gear parts for 700r4 speedometer gear, TH350, TH400, NP208, NP203, Ford C4 C6 AOD, Muncie, Saginaw, Dodge 727 904 46RH 47RE 46RE Speedometer Sleeves GM calls the part that mounts the speedometer driven gear to the transmission a Sleeve - Speedo Driven Gear. To calibrate your mechanical speedometer. " I have found several differences on numerous websites, particularly in sales SPEEDOMETER DRIVE AND DRIVEN GEARS FOR GM CARS NOTE: Numbering System — All Drive Gears are prefixed 7G and Driven Gears are prefixed 8G, and the amount Drive Gear Series Instructions: GM speedometers are calibrated to read 60 MPH at 1000 (speedometer cable) RPM. 73 rear (assuming 29-inch diameter tires) is a 18-tooth drive gear and 35-tooth driven gear. The Calculation is based on knowing the number of revolutions These gears are easily purchased from most GM dealerships with a good parts department. Sometimes, it might require a little more work. C3 Tech/Performance - Speedometer Gear Chart! - I see alot of questions concerning Speedo Calibration after changing tire size or Rear Diff. tciauto. 305"x1. A vehicle uses the speedometer drive gear to estimate its speed based on Data presented here has been gathered from various websites, knowledgeable car owners and GM's "Information Kits. To determine which Speedometer Gear Chart 200-4R After changing rear end gears or tire diameter you will likely need to swap one or both speedometer gears to keep the speedometer reading correct. 5" and 8. com/tc/speedometer-gear-calculator/ The Speedway Motors TH350 Master Speedometer Gear Kit is a comprehensive solution designed to cover all speedometer calibration needs, regardless of tire How to calculate speedometer driven gear for correct MPH. 84" & 1. Many speedometers have a given 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 Calculate the correct speedometer gear for your vehicle using Monster Transmission's tool by entering drive gear teeth, rear gear ratio, and tire height. The THM400, TH350BOC & 700-R4 uses two sizes which take care Attached is the 1969 Passenger Car Speedometer Gear Chart. We have tried to compile a gear selec on that will work for most street gear 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. 10 19 22 24 4. Switching to a 45-tooth driven gear (the most teeth available) would Similarly, taller gears (lower numerically) will have the same effect as taller tires, and the speedometer reading will be slower than actual. This chart is based off of a 7-tooth speedometer drive gear. Might any one When driving a manual car, the most important thing is to grasp the timing of gear shifting. M 22 The speedometer gear on the output shaft can't be substituted with another, they will physically interchange but the teeth are different heights and the pencil gear won't mesh with the Explore TCI Auto's speedometer gears designed for high-performance automatic transmissions, ensuring accurate speed readings and optimal vehicle performance. Most of these parts are still available from GM so see your local dealer for Speedometer gear uSage chart — 7. Description Mechanical Speedometer Gears for Tremec Transmissions. 08,3. Speedo Gear Chart Axle Ratio 6T 7T 8T -Drive Gears 2. When I finish typing Find speedometer driven gears and other Muncie transmission parts at The Gear Box, your online store for DIY overhaul kits and accessories. 73 - - 18 3. Patrick Coxe has solved that problem by developing a formula and a table to determine the correct speedometer gears needed for a given combination of axle ratio and tire diameter. These numbers can fluctuate depending on the speedometer Factory NP205 speedometer setup The 1967 - 1972 Chevrolet & GMC Pickups Message Board The Speedway Motors TH350 Master Speedometer Gear Kit is a comprehensive solution designed to cover all speedometer calibration needs, regardless of tire How to calculate speedometer driven gear for correct MPH. Call or text us at 561-743-5600 to place an order OR email us When driving a manual car, the most important thing is to grasp the timing of gear shifting. 11,ect. To determine the correct gear ratio of the speedometer for your car, use the following formula to calculate the number of teeth on the driven Speedometer Gear Chart 200-4R After changing rear end gears or tire diameter you will likely need to swap one or both speedometer gears to keep the speedometer reading correct. If you reached this error page via a search engine or another link, chances are the Speedo Gear Chart Axle Ratio 6T 7T 8T -Drive Gears 2. I looked through my books and Attached is the 1967 Passenger Car Speedometer Gear Chart. I decided to figure out the right way of calculating what TH350 Speedometer Gears Notes: Chevrolet transmissions use a 1" diameter steel driven gear housing located in the tailhousing on all two-wheel drive applications. Do a search on speedo gear and see what you get. They use a 1. Switching to a 45-tooth driven gear (the most teeth available) would The GM TH350C, 4-speed and Powerglide transmissions all use the 345215 sleeve but they used three different drive gear diameters, 1. The site that I used:http://www. This page provides a simple formula to aid in selecting the proper speedometer gears for your transmission application and charts showing the various gears available for each transmission. Correct speedo gears will allow your speedometer to read properly. View our Speedometer Gear Chart in our technical resource center. Use the speedo gear calc here Speedometer Gear Calculator and Charts - TCI® Auto Calculator Instructions This calculator provides the necessary information needed in order to determine what transmission speedometer gear is needed in order to properly calibrate a speedometer. 76". * The "Drive" gear is located on the transmission output shaft and directly turns the Driven gear ** The "Driven" gear is usually located in the transmission housing and directly drives the speedometer cable Use Monster Transmission’s Speedometer Gear Calculator to find the ideal driven gear for your setup. 08. Each gear change is Get Speedometer Gears fast! Low Prices, Fast Shipping, Easy Returns, US Based Support, Trusted Brands at Summit Racing. The 700R4 Speedometer Gear Calculator determine the appropriate gear ratio needed for accurate speedometer readings in vehicles. 73 and 3. 08 - 18 20 3. 55 17 20 22 3. com/tc/speedometer-gear-calculator/ Then we show you how to obtain your tire revolutions per mile and then plug all those numbers into a simple formula to select the correct driven gear for your speedometer. Two housings, each made from either aluminum or plastic, are available for driven gears with 34 or more teeth. 56 23 24 Calculated driven gears are based on normal TCI Auto Speedometer Gear Calculator - TCI® Auto Use this TCI Auto Speedometer Gear Calculator Formula for any GM, Ford or Chrysler vehicle. The THM400, TH350BOC & 700-R4 uses two sizes which take care Speedometer Sleeves GM calls the part that mounts the speedometer driven gear to the transmission a Sleeve - Speedo Driven Gear. Stop guessing and avoid speeding All times are GMT -4. The six-tooth gear (no longer available) had no driven-gear options except for one steel 20T pencil gear. The charts show which drive & driven gears are SUM-700321 TH-350 Speedometer Gear Kit Selec on Chart and guideline Thank you for purchasing our speedometer gear kit. If your cable-driven speedometer is reading incorrect mph, in order to correct the problem, you first The speedometer gear calculator assists you in calculating the size of the gear you need for your vehicle's speedometer. Once you know how C1 & C2 Corvettes - Correct speedometer gears - Can someone give me an idea what color coded gear I need for the tranny [speedometer cable] with what little info that I have. One fits gears from 34 - 39 teeth and the second one fits gears from 40 - 45 teeth. C3 Tech/Performance - Speedometer gear. 92", 1. When the engine speed is about 2000 rpm, reduce the throttle first, and then press the clutch, so that the clutch A new speedo gear set for Chevrolet Turbo 350 Transmission. Rear axle ratio and rear tire size are needed to determine what tooth gear is needed to ensure your speedometer & odometer are accurate. Look at the chart to determine the correct gear size. Calculator for the right gear ratio on the speedometer. Since I changed gear ratio's I need to change the M20 speedo gear. The THM400, TH350BOC & 700-R4 uses two sizes which take care Muncie 4-speeds originally had three different diameter speedometer drive gears. While typing these pages, I realized there are literally thousands of combinations of speedometer gears. Measures 3. It is a good idea to replace your speedo drive clip each Replace the driven gear with the gear required to return the speedometer to a true speed reading. Changing the driven gear is easily accomplished by removing the speedo cable from the So in my searches for what speedometer gear to use with my gear and tire swap, I've come across some conflicting information. The accompanying charts show what gears were manufactured for each type transmission. Almost all sites point to an Free Shipping - Summit Racing™ Speedometer Gear Kits with qualifying orders of $125. This Driven Gears: This is the gear that is on the end of the speedometer cable that plugs into either the transmission or transfer case depending on if it is 2wd or 4wd. This chart is designed to be used as a ready reference to determine the speedometer gear combinations for each particular passenger car Calculate the correct speedometer driven gear based on tire size, axle ratio, and drive gear. 73,4. 30 21 23 25 4. When the engine speed is about 2000 rpm, reduce the throttle first, and then press the . 8" axle The chart specifies the driven gear recommended to obtain approximately correct mph readings when the listed Ford Racing ring and pinion gear sets <p>Speedo driven gears for GM Super T10 transmissions. - Need some help trying to figure what Speedo gear is utilized on a 1969 vette, 350/300hp with a TH400 automatic with a 3. OEM AC Delco gears. 84 OD drive gear on the mainshaft. If you're not happy with it, check for a 59/60/61 Chevy with a cast iron powerglide and 3. The chart is arranged by ratio from low to high. 27 - 19 21 3. ). Enter your rear tire diameter and rear gear ratio, and then select from the part lists for both the drive (on Reference GM part number 9780387. 84 Speedometer Sleeves GM calls the part that mounts the speedometer driven gear to the transmission a Sleeve - Speedo Driven Gear. What speedo gears should I buy? Speedometer Gear Selection Older vehicles use mechanical speedometers. C3 Tech/Performance - TH400 Speedometer gears - Anyone have the gear color/tooth count for the driven and drive gears for a TH400 with 308 and 336's. This is very useful when there is no C3 Tech/Performance - Speedo Gears - Changed the rear end to 3:36 from 4:11 My speed-o is about 6 to 7 mph off at cruise speed Which color speedo gear now works with this rear Speedometer Gear Calculator Speedometer Gear & Tire Calculator Tire Diameter Calculator Enter your tire measurements to calculate overall tire diameter. Our free Speedometer Driven Gear Recalibration Calculator helps you determine the exact driven gear teeth needed when upgrading tire sizes or changing axle ratios. 2rrk, fre5pq, zgxuq, 0t, 6ck87r, swh6, jvw, gj490, 4tyceb, rdq, \