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!
Thank you to Sonnax for building the only input shaft on the market for a Powerglide that I haven’t broken yet.S. Taylor (aka John Doe), Street Outlaws
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.
Sonnax makes the best transmission parts on the planet.C. Bales, Bales Performance Motorsports
Expanded parts selection makes it easier then ever to tune clutch capacity
My Sonnax-equipped Powerglide transmission performed flawlessly through the ultimate torture test: HOT Rod magazine DRAG WEEK. The car went over 1,000 miles, pulling a TRAILER full of tools, parts, and equipment, PLUS racing five days in a row. The transmission was EASILY the strongest link in the chain!D. Diesner, Libertyville, IL
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.
300 Passes on my Sonnax 1.80 gear set and no issues and continues to be rock solid . We use all Sonnax Performance Parts in all of our HP transmission builds. Thanks for great products!R. Merrill, Affordable Transmission