Sonnax offers complete GM Powerglide planetary assemblies in a variety of gear set options and configurations to ensure you get the performance you want without overpaying or sacrificing quality. Each comes fully assembled and ready to install.
Track-proven to 2,000 horsepower, Sonnax Premium planetaries are an ideal choice when extra durability is needed at a reasonable cost in demanding applications. 1.80 Ratio Premium planetary assembly kit 28180G-01S features premium-processed sun and pinion gears that are a big step up from standard case-hardened and tempered varieties. A top-quality material combined with a special heat-treating process results in gears with improved grain structure and stability that are tougher and more wear resistant.

Top-quality sun and pinion gears deliver outstanding durability
High-strength output shaft resists twisting and breakage
Bolt-together carrier for ease of service

See chart and specs below to determine if this planetary assembly suits your application, or dial in options here to choose your build.

More From This Category

TCI For Chrysler Torqueflite Flexplate for 318-440, Small Bolt Circle, 5/16 in. Bolt

TCI For Chrysler Torqueflite Flexplate for 318-440, Small Bolt Circle, 5/16 in. Bolt

$130.71

TCI 70-82 C4 Racing Filter and Pan Gasket Set for Deep Pan

TCI 70-82 C4 Racing Filter and Pan Gasket Set for Deep Pan

$51.14

RTS Bandit Billet Plus 9.5'', High Stall Torque Converter & Flexplate Package, SB Ford C4 26 Spline, 3600-4000 Stall, 850HP, 157th Flexplate, Each

RTS Bandit Billet Plus 9.5'', High Stall Torque Converter & Flexplate Package, SB Ford C4 26 Spline, 3600-4000 Stall, 850HP, 157th Flexplate, Each

$1,942.92