Mechanical Speedometer Gear Kit For TH350 And 700R4 Transmissions With 17 Tooth Drive Gear And 38 Tooth Driven Gear Speedo Housing Parts CT8643 Customizable Setup

Mechanical speedometer gear kit for TH350/700R4 w/ 17-38T gears
✔️ Includes aluminum speedo housing, seals, and 17-38T gears

CT8643 is a complete mechanical speedometer setup for TH350 and 700R4 transmissions. It is customizable to match your gear ratios. The shown setup is popular for the 700R4, or for a TH350 with a 2 inch tail housing hole. Includes aluminum speedo housing with seals for 34-39 tooth gears, extra seals, 17 tooth drive gear, 38 tooth driven gear, drive gear retainer clip, speedo housing lockdown bracket, bracket bolts - SAE & Metric, extension housing O ring.

✅ Aluminum Speedo Housing with Seals for 34-39 Tooth Gears
✅ Extra Set of Seals to use later
✅ 17 Tooth Speedo Drive Gear
✅ 38 Tooth Speedo Driven Gear
✅ Drive Gear Retainer Clip
✅ Speedo Housing Lockdown Bracket
✅ Bracket Bolts - SAE & Metric
✅ Extension Housing O Ring

💡 What is a mechanical speedometer gear kit and why is it used with TH350 and 700R4 transmissions?

This handy setup lets you calibrate the speedometer to your gear ratio and tire size. - Handy for adjusting speedometer accuracy on classic GM automatics
- Useful when changing tire sizes or rear gears
- Includes drive and driven gears to dial in the reading
- Works with TH350 and 700R4 transmissions
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