CT8147 - A new complete mechanical speedo set up for TH350 and 700R4 transmissions. We can customize this for you. Please contact us prior to purchase if you would like us to substitute a different driven or drive gear or if you need help calculating the proper gear set. This kit ONLY works on th350s with a 2 inch hole in tail housing (NOT the bullet style th350), and on 1980s or early 1990s 700R4 / 4L60 electric speedo setup back to the original mechanical setup so you can get a proper speedometer reading on your older vehicle. We can customize this for you to achieve a more accurate speedometer reading. Just let us know your rear end ratio (example 3.73) and tire height or tire size (example 275/60/R1ch hole for speedo:
Items included as Shown:5), and we will do the math for you. The setup shown is our most popular combination for the 700R4 and Th350 with 2 in
- Aluminum Speedo Housing with Seals for 40-45 Tooth Gears
- Extra Set of Seals to use later
- 15 Tooth Speedo Drive Gear
- 43 Tooth Speedo Driven Gear
- Drive Gear Retainer Clip
- Speedo Housing Bracket with Bolt
This kit will NOT work on 4L60E transmissions, or th350 speedo setups that use the 7/8 inch hole for bullet speedometer housing.
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For questions or to place an order by phone, please call our solutions desk at (888) 324-1617 8AM-6PM PST (West Coast USA). Or email us using our CONTACT link above
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Worked great, this is a must! They calibrated before I ordered so make sure you do that so you get the RIGHT GEARS!