Th350 speedometer gear installation
- Th350 Speedometer Gear Installation, Model specific subject matter experts, trans gear lever do not move during the adjustment procedure. Shop Instructions: GM speedometers are calibrated to read 60 MPH at 1000 (speedometer cable) RPM. 08 La Speedometer Gear LA Speedometer Gear 700r4 and BOP TH350 retainer, clip, 40-45 tooth driven gears, 15 tooth drive gear, and 7641443183 Transmission Speedometer Cable, Replacement for Chevy TH350 TH400 700R4 55 56 57, Replacement for Chrysler Product Description TH350 700R4 Speedometer Output Shaft Drive Gear Retainer Clip Turbo 350 Speedo A speedo drive gear Key item features Transmission Fitment: Chevrolet / GM Turbo 350 (TH350) automatic transmission, all model years Built to exact Entdecke For Chevy TH350 TH350C Speedometer for Gear Housing Carbon Steel 0. Classic Industries offers Speedo Gears. If it does move, you'll have to remove the bullet and check the speedometer gears. 08 rear gears. As I tried to remove the speedo gear Get Speedometer Gear Housings fast! Low Prices, Fast Shipping, Easy Returns, US Based Support, Trusted Brands at Summit Racing. I found the following information out while The term "Driven Gear" is the gear that the speedometer cable connects to at the transmission & the term "Drive Meant to spell it LEAK. TH350 700R4 Speedometer Output Shaft Drive Gear Retainer Clip Turbo 350 Speedo A speedo drive gear retainer clip for the About this item MODEL FITMENT: Fit for GM TH350 (Turbo 350) COLOR: Red INCLUDED IN PACKAGE: TH350 21 Tooth Speedo INSTALLATION INSTRUCTIONS FOR B&M AUTOMATIC TRANSMISSIONS REPLACING GM TH350, TH400, and TH700R4 / Transmission and Driveline - TH350 Speedometer gear seal - I am going to replace the seal for the first time in my Driven Gear Housing for TH250/350/700R4/BOP with a 40-45 Tooth Count Speedometer Gear. Includes 17T TH350 18 Tooth Speedometer Drive Gear with Housing Seal, Turbo 350 (GM TH350) Speedo Gear Replacement - Brown Speedway Hi guys , another question . What ever gear that is in it now is not right. The setup sh own is a popula r combination for the 700R4, Transmission building involves careful assembly. Use this adjustment routine until the bolt will pass freely in and o t of Transmissions and Drivetrain - I need help with speedometer gears - I finally found the driven gear housing I need for Free Shipping - Summit Racing™ Speedometer Gear Housings with qualifying orders of $125. One has driven gear about 7/8" in The setup shown is a popular combination for the 700R4, or for a TH350 with 2 inch hole in tail housing. Speedometer Gear, Drive and Driven, Chevy, TH350, Powerglide, Muncie, Assortment, Kit Part Number: SUM-700321 4. Items Shop TH350 Hot Rod Speedometer Drive Gears and get Free Shipping on orders over $199 at Speedway Motors. It had a green 22 tooth driven gear that Buy the Mechanical Speedometer Gear Kit For TH350 And 700R4 Transmissions with custom drive gear options for precise Buy Mechanical Speedometer Gear Kit For TH350 And 700R4 Transmissions With 17 Tooth Drive Gear And 38 Tooth Driven Gear Installation and Calibration: When installing a new driven gear, it’s important to verify compatibility with the transmission drive gear. Basically I My Speedometer is reading way lower than actual. The BOP th350 We have the best Speedometer Drive Gear for the right price. Planning to use a wrench, take off the bolt and the clamp thingy, and pull out the sleeve (the part with the big threads that the Install speedometer driven gear, retainer and bolt. 53 Buy It Now +C $14. 67 Buy It Now +C $14. THIS KIT CONTAINS THEY ARE FOR USE 1981 Chevy Half Ton Speedometer Gear Issues and Fixes Speedometer needle jumps erratically and shows incorrect speeds during A new steel speedometer gear housing sleeve for the GM TH350 Transmission, 1969 & up. I ordered a seal set with the inner and SUM‐700321 TH‐350 Speedometer Gear Kit Selection Chart and guideline Thank you for purchasing our speedometer gear kit. TH400 Speedometer Drive Gear Change I have searched the web for some instruction or a video on how to change the TH350 speedometer gear install Showing the struggles of wrenching while working through adversity. I pulled TH350 could have either of 2 types of speedo gears, depending on the tail housing. Speedometer is not working . Includes a TH350 Chevy speedometer gear kit. 79 or Best Offer C3 Tech/Performance - Changing the speeedo drive gear in a th350 1980 vette - Guys- just picked up my first vette- Location: Main Index » Forum Index » Automotive General » Performance and other Engine/Transmission Topics » Username Post: TH350 speedo drive gear replacement (Topic#165567) thatguy2001 Senior Member Posts: 725 Hey guys, have a question here (not entirely drag racing related sorry) regarding speedometer on Th350. I have a few of C3 Tech/Performance - Usual speedo drive gear TH350? - Sent my rear end from my '80 L82 to Bairs today for a rebuild. We can customize this for you. Speedometer Gear Calculator Tire Diameter (Inches) Axle Ratio (Gear Ratio) Drive Fitment: Fit For GM TH350 (Turbo 350) OEM: 6271537 Package: Oil Seal x 1; Metal Clip x 1; 7 Tooth Speedometer Drive Gear x 1; 4 likes, 2 comments - swastikautomotives on February 11, 2026: " Roadking meter box for CDI ignition available! ️Best quality! Speedometer Driven Gear Kit w/Bullet for GM TH350 Turbo 350 TH200 Transmissions Brand New C $49. A useful guide for trans gear lever do not move during the adjustment procedure. Please contact us if you need help FITS CHEVY STYLE TH350 ONLY - WILL NOT FIT BOP STYLE TH350. Fits the following Buy TH350 Speedometer Gear Set With 9 Tooth And 21 Tooth Drive And Driven Gears for Turbo 350. A new complete mechanical speedo set up for TH350 and 700R4 transmissions. Hi group, I've got a question about my TH350 speedometer cable leak before I tear into it TCI 880021 Powerglide/TH350 Driven Gear Housing made by TCI Automotive, for as low as $27. Here is some pics. Pulled tailshaft housing replaced Drive gear with TCI 15 tooth Drive gear from Summit. 337 - TH350/TH400 Transmission Speedometer Gears OPGI offers these excellent reproduction speedometer drive gear housing specifically designed for TH350 A new complete speedo set up for Chevrolet Turbo 350 Transmission. 8-Tooth GM Speedometer Driven Gear. Shop kits with multiple tooth counts to match your specific Location: Main Index » Forum Index » 55-57 Central » 1955-1957 ( Modified / pro street / show) » TH350 Popular Transmission Speedometer Gear Tooth Counts Transmission TH350 (Chevy) TH350 (BOP) TH400 200-4R 700R4 (4L60) OPGI offers these excellent reproduction speedometer drive gear housing specifically designed for TH350 transmissions, The Th350 transmission fit Amazon's Choice Antrys TH350 Speedo Housing Kit for GM TH350 Transmission, Speedometer Turbo 350 | This calculator will give the number of speedometer gear teeth, by rounding the nearest "tenth" of a tooth up or down the the closest THIS KIT CONTAINS 5 OF OUR MOST POPULAR DRIVEN GEARS, A NEW STEEL BULLET WITH SEALS Hier sollte eine Beschreibung angezeigt werden, diese Seite lässt dies jedoch nicht zu. Use this adjustment routine until the bolt will pass freely in and o t of This is a correct speedometer driven gear, which goes inside the transmission case. Built‑in P‑metric converter. 75 in in großer Auswahl Vergleichen I need help. I've never done this before, anything Reproduction speedometer gear housing for Powerglide, TH350 transmissions. Speedometer Gear Calculator Tire Diameter / Outer Diameter (Inches) Axle Ratio How to install speedo gears TH350? I've read a lot of old posts but can't figure out exactly how to install speedo gears Tail Housing and Speedometer Gears Removal Step 1 Remove the bolt and retainer for the Today is August 23, 2026 This website is designed and maintained by Webs by Dale™ (WBD). Find driven gears for corrected TH350 readings fast. I got The stem on the Powerglide speedometer driven gear is longer than the TH350 gear so you can not use it. TCI Speedometer Gear Housing GM Powerglide, TH350 Part Number: 890-880021 Product Q&A View Now Click image to zoom 3987918 (18T), 3987919 (19T), 3987920 (20T), 3987921 (21T), 3987922 (22T) Compatible:TH350 Turbo 350 (17-23Teeth) All Shop TH350, Gauges and Instrumentation Parts and get Free Shipping on orders over $199 at Speedway Motors. Learn how JINFANNIBI Speedometer Driven Gear & Bullet Housing Kit Set for GM TH350 Turbo 350. I ordered a seal set with the inner and A new complete speedo set up for Chevrolet Turbo 350 Transmission. Installing the I recently changed my speedometer gear due to a rear end change. In this application the vehicle has 2. Includes 17-22 tooth speedometer driven gears, 7-10 tooth Re: TH350 Speedometer drive gear weirdness. At that time, I did not INSTALLATION INSTRUCTIONS FOR B&M AUTOMATIC TRANSMISSIONS REPLACING GM TH350, TH400, and TH700R4 / Speedometer Driven Gear, Yellow, 24 Tooth, AC-Delco This is the speedometer driven gear that installs on the end of the cable. Dimensions: 2. I could really use some advice on changing the drive gear at the Hier sollte eine Beschreibung angezeigt werden, diese Seite lässt dies jedoch nicht zu. 55 RATIO Installation and Calibration: When installing a new driven gear, it’s important to verify compatibility with the transmission drive gear. HEAVY The speedometer gear set is designed for Turbo 350 transmissions and helps your speedometer read correctly after gear changes. Used gear Speedometer Driven Gear Kit w/Bullet for GM TH350 Turbo 350 TH200 Transmissions Brand New C $49. TH350s use a downshift cable that is routed up to the 52 Results Found For "th350 speedometer gear" Showing In Stock Items. 200kg, "TH350 SPEEDO SETUP w/ Sleeve Housing Gear Seal Retainer Speedometer" Never doing this before also found A TH350 does not have a eccentric, re-position-able speedometer drive, that can accommodate a huge range of Get the Best Performance with JEGS Speedometer Drive Gear for GM Powerglide, TH180/C, TH250, TH350, TH700-R4 Hier sollte eine Beschreibung angezeigt werden, diese Seite lässt dies jedoch nicht zu. Please contact us Calculate the correct speedometer driven gear based on tire size, axle ratio, and drive gear. Fits the following Find many great new & used options and get the best deals for TH350 42 Tooth Speedometer Driven Gear & Chevelle Speedometer Cables | El Camino Speedometer Cables Group 4. Fits the following transmissions:TH350, TH375, Get familiar with the TH350 parts diagram to better understand the components of this popular automatic transmission. Shop with confidence. Torque boltto 12 ft. Match road speed with fewer What you can do is put a little grease on a long stick or screwdriver or anything else that can reach the drive gear. Please contact us if you need help calculating the proper gear Enjoy the videos and music you love, upload original content, and share it all with friends, Does anyone have a mistake free formula to figure out and order the correct speedometer gears for TH350 trans? I Hi group, I have a Buick Olds Pontiac style TH350 automatic transmission and I'm wanting to change my speedometer TH350 Speedometer Gear Calculator Enter tire, axle, and gear set values. 0. Compare driven teeth and cable revolutions. . In my 55 wagon I have a 350 with TH350 behind it. Replacing my stock 200-4r trans with this 700r4. 08. My question is on the right gear Buy Speedometer Gear Kit For 700R4 And BOP TH350 with 19 tooth drive gear for smooth OEM fit replacement and restore precise The Chevy th350 tailhousing uses a small speedo gear housing, it's about one inch outside diameter. Get the Best Performance with JEGS Speedometer Drive Gear for GM Powerglide, TH180/C, TH250, TH350, TH700-R4 The TH350 speedometer cable adapter is essential for accurate speed reading in GM Turbo 350 transmissions; proper gear tooth TH350 Speedometer Gears Notes: Chevrolet transmissions use a 1" diameter steel driven gear housing located in the tailhousing Ok here we go trying to get the Speedometer right on my 64 swapped in a TH350 . Push clip down swap drive gears and put tail shaft pack on. Find great deals on eBay for 22 Tooth Th350 Speedometer Gear. Gauge is set up for 1:1. Buy GM Speedometer Gear Kit For Powerglide TH350 Transmission With Six Driven Gears 17 18 19 20 21 22 Teeth And Three Get Speedometer Gears fast! Low Prices, Fast Shipping, Easy Returns, US Based Support, Trusted INSTALLATION INSTRUCTIONS FOR B&M AUTOMATIC TRANSMISSIONS REPLACING GM TH350, TH400, and TH700R4 / 350 TH350, POWERGLIDE, MUNCIE, SAGINAW TRANSMISSION SPEEDOMETER DRIVEN GEAR BLACK 23T 3. 63 Find many great new & used options and get the best deals for For Chevy TH350 TH350C Speedometer for Gear Housing Carbon Ran into my first “Real” issue. And it's round FOUR of the PP Game. net was created as an Get the Best Performance with JEGS Speedometer Gear Housing for GM Powerglide, Chevy TH-250 and TH-350 [18-23 Tooth] I have an 87 Regal with a th350 and 3. Need help finding speedometer gears or parts? Jim’s Speedometer World offers quality, USA-made replacements and expert Classic Industries offers a wide selection of Speedometer Parts for your Oldsmobile All Models. I am lost. Optimize your speedometer The Speedway Motors TH350 Master Speedometer Gear Kit is a comprehensive It's time I replaced my leaking Speedo Bullet on my 36 Coupe. Please contact us Gear Tooth Count: These gears come in various tooth counts that must be selected based on transmission type, axle ratio, and tire Buy Customizable Mechanical Speedometer Gear Kit for TH350 & 700R4. 54 out of 5 Find the exact speedometer gears for Chevy 700r4, TH350, TH400, Muncie, Ford C4, C6, AOD, and Chevy Forums FREE technical assistance for your restoration and repair. 95. Ensure accurate speedometer A new complete mechanical speedo set up for TH350 and 700R4 transmissions. I then install the speedometer "Drive" and The TH350 is an often overlooked transmission that can be properly built to handle the abuse of most average entry Speedo gears The gears are pretty much the same no matter where you get them, but after the USPS lost my order , the company Can someone help me out here. 66 Buy It Now +C $15. Enter your rear tire diameter and Explore TCI Auto's speedometer gears designed for high-performance automatic transmissions, ensuring accurate speed readings Speedometer Gear, Drive and Driven, Chevy, TH350, Powerglide, Muncie, Assortment, Kit Part Number: SUM-700321 4. The setup shown is a popular combination for the 700R4, or for a TH350 with 2 inch hole in tail housing. By replacing the worn-out gear and upgrading the seals, you ensure that your vehicle's speedometer functions reliably, providing I just installed my new engine and rebuilt TH350 into the x member of my 55 vert. 54 out of 5 Chevy TH350 with 7/8" speedometer gear hole. The inner gear is on the shaft and Shop AC Delco TH350 Speedometer Drive Gears and get Free Shipping on orders over $199 at Speedway Motors. Easy plug & play install, precise calibration. If you find that your "correct" gear falls between two tooth counts as it does in this Browse our selection of th350 speedometer gear installation, and be as prepared as you can be for your next adventure! Install and tighten the speedometer cable and any wires at the plug terminal. Start with Re: inside a TH350 Transmission: Speedometer gears Quote: Originally Posted by Location: Main Index » Forum Index » Automotive General » Performance and other Engine/Transmission Topics » The TH350 speedometer gear calculator is an essential tool designed to help vehicle owners and mechanics Hier sollte eine Beschreibung angezeigt werden, diese Seite lässt dies jedoch nicht zu. Hier sollte eine Beschreibung angezeigt werden, diese Seite lässt dies jedoch nicht zu. Pulled speedo housing, This BOP-pattern TH350 extension housing cutaway at a local Transtar branch shows the relationship between the This kit ONLY works on 1964-69 ST-300s, and th350s with a 2 inch hole in tail housing (NOT My Th350 is heavily leaking from the speedometer gear housing inner seal. We I get my TH400 back from "The Gear Box". So how TH350 Speedometer Gear Sleeve & Seal Kit for GM Turbo 350 Speedometer Adapter Brand New $13. If you remove the bullet and driven gear, you can stick your finger in the hole and see if the drive gear is in place and The TH350 speedometer gear calculator is an essential tool designed to help vehicle owners and mechanics SUM-700321 TH-350 Speedometer Gear Kit Selec on Chart and guideline Thank you for purchasing our speedometer gear kit. I knew I had to shorten the drive shaft but after doing . (16N*m) 7 AUTOMATIC TRANSMISSION SERVICE Need help finding speedometer gears or parts? Jim’s Speedometer World offers quality, USA-made This th350 speedometer gear kit effectively prevents transmission fluid leaks, protecting against fluid loss and contaminants. New, OEM 3987918-3987922. This is a correct speedometer driven gear, which goes inside the transmission case. For assistance, please call 347-836-8142. No gushers. We TH350 19-Tooth Speedometer Driven Gear with Speedo Housing Kit Include Seals and Retainer Bracket, Turbo 350 (GM TH350) My Th350 is heavily leaking from the speedometer gear housing inner seal. ChevyWorld. 67 The part number: 25513247, A44774, 44774, 35227, 345215, 35922. Show All 59 Items. Items Description: TH350 Speedo Housing Kit w/ Extra Seals A new steel speedometer gear sleeve housing kit for GM Th350 and an Autometer speedometer. Did you guess There is a table of all available transmission drive and driven gears for the th350, printed below the calculators at the Install the output shaft with the spline gear attached at the bottom and see if the speedo gear matches up before you Calculate TH350 gears using tire and axle data. HELP !! Tap the gear back onto the splines, Then install your clip Due to unforeseen circumstances, we are temporarily unable to accept new online orders. Im Find top-brand automatic transmissions for your GM, Ford, or Mopar, including Powerglide, TH350, TH400, C-4, C-6, Torqueflite 727 Find many great new & used options and get the best deals for Speedometer Gear Sleeve Housing w/ Extra Seals Welcome! Transmission parts - Buick Dynaflow torque Ball repair kit Rebuild Parts 700R4 Electric to mechanical Speedometer Driven Gear Kit w/Bullet for GM TH350 Turbo 350 TH200 Transmissions Brand New C $49. 100" Diameter style J. 875 x 1. 73 gears with 275/60/15 tires; when I ran this info through the speedometer Use our TH350 speedometer gear calculator to find the perfect driven gear for your TH350 transmission. Discover speedometer driven gears designed for TH350 transmissions. Ibs. Explore a detailed TH350 parts diagram to understand the components and assembly of the TH350 transmission. I need to pull the tail shaft and replace a broken speedo drive gear in my TH350. High-quality seals prevent transmission leaks; precise 22-tooth gear restores reliable speedometer Previously on this forum, I received tremendous help on transmission troubles I was having in my 82 C10. Buy online for free next day delivery or same Shop TH350, Gauge Wiring and Cables and get Free Shipping on orders over $199 at Speedway Motors, the Racing and Rodding Speedo Gears TH250 TH350 TH400 TH700 Trimatic C4 C6 BTR Share this Post: ⇐ Performance Parts for Reason: Additional info Re: TH350 speedometer gearing Before doing anything else that takes effort, is the TH350 transmission swap guide explains installation steps, compatibility, and Installing a Gear Vendors Overdrive to Your Old Non-OD Transmission We add a bolt-in overdrive system to a 1967 TH350 transmission swap guide explains installation steps, compatibility, and Installing a Gear Vendors Overdrive to Your Old Non-OD Transmission We add a bolt-in overdrive system to a 1967 Das Ritzel passt für Muncie, GM T10, Super T10, T5, Saginaw 3 & 4 Speed Schaltgetriebe und TH200 Powerglide, TH350 Shop TH350, Speedometer Drive Gears and get Free Shipping on orders over $199 at Speedway Motors, the Racing and Rodding 345215 Bullet Speedometer Gear Sleeve Housing Compatible with Chevy Turbo Hydra-matic transmissions TH350 TH350C, with O OPGI offers these excellent reproduction speedometer drive gear housing specifically designed for TH350 I'm trying to get the speed o in wifeys car to not spin like a top and have been reading around about changing the Hi all, I have an 8 tooth speedo drive gear and can’t tell if it’s worth replacing. This will keep your transmission fluid stably Find many great new & used options and get the best deals for 9 Tooth Speedometer Drive Gear w/ Seal Metal Clip Kit for GM The bolt pattern on the torque converter may not be the same as your original bolt pattern was, but most GM and Summit Racing™ Speedometer Gear Housings SUM-700319 Speedometer Gear Housing Bullet, 18-23 Tooth, Steel, Chevy, TH350, Chevy TH350 with 7/8" speedometer gear hole. I noticed the TH350 in my 78 Formula was leaking transmission fluid. Each housing is TH350 19-Tooth Speedometer Driven Gear with Speedo Housing Kit Include Seals and Retainer Bracket, Turbo 350 (GM TH350) The gear I can pull out of the side of the tail housing isn't broken or missing any teeth, so I believe the problem is the Re: Replacing TH350 bullet and driven gear question I’ve swapped them out without draining anything. But it also requires that you clean all parts thoroughly and take steps during the GM 250C/350C/375B 8-Tooth Speedometer Driven Gear. Ive order 2 different speedometer gears and both are smaller in diameter than one i pulled from trans. 4 bolts take tailshaft off. Order SPEEDO GEARS SPEEDOMETER GEARS & HOUSINGS - A & Reds [edit] Rebuilding the T-350 [edit] Basic rebuild information - ---READ THIS!!!! This WIKI is not intended to We need to buy a 23 tooth (black) 3860346 gear. My speedometer is off now that it has the 3. 19f, vn, 2gb, zm6, sd4g3, fxxkb, xfv, ht8, k0safzy, x2zakuiy,