Circle D GM HP Series 10L80 / 10L90 Torque Converter (Positive Displacement Supercharger)

Maximize the performance of your GM 10L80/10L90-equipped vehicle with this high-performance torque converter specifically engineered for Positive Displacement (PD) Supercharged applications. Designed to provide excellent street manners while delivering rapid throttle response and impressive power on demand, this converter is calibrated to perfectly harness the massive, instant low-end torque generated by Roots or Twin-Screw superchargers. Built to last with heavy-duty components, it delivers the ideal balance of comfortable daily drivability and aggressive track performance.

Key Features

Specifically calibrated for Positive Displacement Supercharged (PD) GM 10L80/10L90 applications
Multiple stall speed options available to perfectly match your engine's powerband and supercharger setup
Hand TIG-welded construction for maximum durability under heavy torque loads
Enhanced lockup clutch lining for consistent, reliable performance
Heavy-duty Torrington bearings and exclusive CDS bearing retainer

Fitment

General Motors vehicles equipped with the 10L80 or 10L90 10-speed automatic transmission (Positive Displacement Supercharged builds, e.g., factory ZL1 / LT4 or aftermarket blowers)
Builds over 850hp should use the Circle D Pro Series for proper power handling

Note: Transmission tuning is highly recommended when upgrading to an aftermarket torque converter. Verify compatibility with your specific 10L80/10L90 application before ordering.