Sonnax’s innovative approach to design and manufacturing allows this venerable old transmission to thrive even as power and speeds steadily increase. Sonnax offers top-of-the line, proven solutions for aluminum Powerglide transmissions at any level of racing, and is the gold standard for circle track and bracket vehicles as well as the fastest door slammers running. To achieve a winning match of quality and performance, trust Sonnax to help you cross the finish line!
Get an inside look at what goes into an elite Powerglide drag racing transmission with Sonnax High Performance Product Line Manager Gregg Nader. From shaft to servo, every part of this build has been customized for world-class performance that only Sonnax parts can deliver.
Expanded parts selection makes it easier then ever to tune clutch capacity
Also Available: Super Hold Servo Kit
OE Powerglide servo design flaws are responsible for many “mystery” band failures, broken shafts and staging issues. This video dramatically shows the pin bias effect in action and why Sonnax servo upgrades are critical for improving the reliability of the capable Powerglide transmission.