Torque Converter Dump Valve Kit - Two Stage

The Torque Converter Dump Valve Kit – Two Stage (HP6217-2) from Hughes Performance is a specialized transmission control component engineered to enhance shift quality and clutch durability in high-performance Powerglide applications. This two-stage design manages torque converter lock-up transitions with precision, reducing shock load during gear changes and extending transmission service life under sustained performance driving.

The two-stage dump valve architecture regulates converter bleed-off pressure in distinct phases, allowing controlled engagement and disengagement of torque converter lock-up. This staged approach minimizes harsh converter slip during acceleration while maintaining smooth power delivery across the RPM band. At 7.2 lbs and compact dimensions (16.2 x 3.8 x 16.2 inches), the kit integrates cleanly into existing Powerglide installations without requiring extensive modification or additional mounting hardware.

This component addresses a critical need for drag racers, street performance builders, and restoration enthusiasts running Powerglide transmissions in high-horsepower applications. Factory converter lock-up logic often causes abrupt engagement that generates shock loads capable of damaging internal clutches and input shafts. The Hughes Performance HP6217-2 dump valve kit provides independent control over lock-up timing and pressure modulation, allowing builders to tailor converter behavior to their specific engine output and driveline configuration.

Powerglide transmissions remain popular in vintage drag racing and street rod builds due to their simplicity and adaptability. However, modern performance levels often exceed what stock torque management systems were designed to handle. Hughes Performance specializes in Powerglide-specific upgrades that bridge this gap, and the two-stage dump valve represents a core solution for builders seeking reliable, repeatable shift behavior without expensive transmission rebuilds.

Part number HP6217-2 is the correct selection for two-stage applications; verify fitment with your specific Powerglide variant before ordering, as dump valve compatibility depends on transmission series and converter lock-up circuit configuration.