New gear set improves launches and makes broken planetaries a thing of the past

As any drag racer who runs in the Outlaw Drag Radial or 10.5 classes can tell you, too low of a planetary gear ratio can be a serious hindrance to attaining a decent 60 foot time. The relatively small tire sizes that define these classes mean that traction is at a premium, and all of that money spent building a high-horsepower race engine is wasted if it goes up in tire smoke. To address this concern, TCI® has introduced the new PRO-X™ 1.65 Ratio Straight-Cut Planetary Gear Set.

When the engineering staff at TCI® set out to create the PRO-X™ 1.65 Straight-Cut Planetary Gear Set for Powerglide Transmissions, they knew that in order to survive the demands of 2500+ hp drag race engines, only top-quality materials could be used. All gears - pinion, center, auxiliary and flange - are manufactured from bulletproof 9310 billet steel, and a straight-cut tooth design further enhances strength through increased gear tooth contact area. The planetary carrier is made from super tough A356-80 ductile iron, and a 4140 forged steel ring gear and output shaft complete one of the strongest planetary gear sets ever made for a Powerglide Transmission. No stock GM parts are used in the manufacture of the PRO-X™ 1.65 Straight-Cut Planetary Set, making it the only logical choice for racers who run a Powerglide in traction limited street tire classes.