TH350 - TH400 - POWERGLIDE

TH350 / TH400 / Powerglide Performance Torque Converters
Classic GM strength, built in Dearborn.

Dearborn Precision Performance Parts builds high-performance stall converters for the legendary TH350, TH400, and Powerglide transmissions. These are the workhorses of classic Chevys, street rods, and serious bracket cars — and they deserve a converter that can keep up.

Every unit is engineered and assembled in Dearborn with thorough TIG-welding on the impeller and turbine, heavy-duty sprags, USA-made bearings, and CNC-machined components. The result is consistent flash stall, strong power transfer, and the durability to handle real torque without giving up.

What you’ll find here:

  • Street and strip stall ranges (3000–4000+ RPM options)
  • Converters built for both daily manners and high-horsepower applications
  • Precision balanced and tested units ready for installation

Whether you’re running a classic muscle car, a hot street rod, or a dedicated drag car, these TH350, TH400, and Powerglide converters are made in the 313 to dominate Detroit streets on out to Milan Dragway and beyond.