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Faster tougher stronger

Powerglide

Heavy Duty & High Performance Upgrades

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!

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From the Bench:
Building a World‑Class
Racing Transmission

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.

Complete Servo Kits

Engineered from the Ground Up to Solve Old-School Problems


 

Overcoming the Servo Pin Bias Effect

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.

Sonnax powerglide transmission parts catalog v2 1

Powerglide Transmission Parts Catalog, Vol. 2

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Sonnax high performance products meet the toughest challenges faced by hard-working, daily-use drivetrains as well as racing units going all-out on the street or track.

Learn About Sonnax Heavy Duty & High Performance See All Heavy Duty & High Performance Upgrades