B&M 30423 Traveler Torque Converter, 1968-1981 GM TH350

10.75 in. bolt circle, 300 RPM stall over stock, retains lock-up feature

PART# 30423

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This B&M Traveler torque converter fits GM 1968-81 TH350, TH375B (will not fit TH350C) automatic transmissions and retains lock-up feature. Traveler torque converters are an excellent choice for stock vehicles, vehicles with light performance modifications, tow vehicles and RV's. They will increase the stall speed by approximately 300 rpm over a factory stock converter. The additional stall of the Traveler makes acceleration much crisper and fun to drive. Features include fully balanced and pressure tested by expert technicians and are manufactured to B&M's exacting tolerances for long life and includes new precision pump drive tube, heavy duty needle bearings, furnace brazed and new sprag and rollers in stator. Notes: Stall speed listings are based on engines producing 230lb. ft. of torque at 2,500 rpm. More torque at 2,500 rpm will give you more stall speed, less torque at 2,500 rpm will give you less stall speed than the stall speed ratings indicated. This converter is Not recommended for supercharged, plate-type nitrous oxide or trans-brake applications. The product images shown are for illustration purposes only and may not be an exact representation of the product. 10.75 in. bolt circle


  • Heavy Duty Needle Bearings
  • Ideal for Towing Applications
  • Precision Pump Drive Tube
  • Furnace Brazed

Product Attributes

Emission Code5
Product TypeTorque Converters
California Proposition 65 RequiredNo
Part Number30423



This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.

Tech Resources

For GM 1968 to 1981 TH350, TH375B (will not fit TH350C) automatic transmissions


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