GM Powerglide
Performance Transmission 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!
View Performance Parts by Application:
- Transmission Parts: Case Internal Linkage Pump Servo/Band Cast Iron Powerglide
- Torque Converter Parts: Performance Converter Kits
- Driveline: Roller Bearing Slip Yoke Bushing Slip Yoke Sonnax Driveline Performance Builds
Sonnax makes the best transmission parts on the planet.
C. Bales, Bales Performance Motorsports
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
From the Bench:
Building the High Horsepower Powerglide
Get an inside look at what goes into an extreme drag racing build with Sonnax performance expert Gregg Nader. From shaft to servo, learn how every component is optimized to work together for unrivaled transmission performance and durability.
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
Lead Sled Lea Levels Up Her Powerglide
Named one of the 2019 Hottest Women in Drag Racing by Drag Illustrated, Lea Ochs and her iconic Lead Sled Resurrection wagon are hitting the big time with a custom build from one of the sport’s top performance specialists: Wendell Dunaway. Get the story on this incredible team and how Sonnax upgrades transformed her Powerglide into a rock-solid transmission ready to run the Lead Sled’s big power.
Read Article
The Lead Sled Resurrection’s cutting-edge Powerglide gets two big thumbs up from driver Lea Ochs and custom transmission builder Wendell Dunaway of Mr. Wendell’s Motorsports fame.
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
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