MAXIMUM DUTY STRAIGHT CUT PLANETARY

• 4 pinion reaction carrier
• 6 pinion output carrier (2.98-1.56 Ratio)

The Coan Racing “Maximum Duty Planetary” kit with straight-cut planetary with 4 pinion reaction and 6 pinion output carrier (ratio 2.98–1.56) is a high-strength upgrade designed for serious Turbo Hydramatic 400 builds. This system delivers robust load-handling through a proven geartrain configuration. The straight-cut gears included in this assembly offer superior tooth engagement and distribute torque loads more evenly, significantly lowering the risk of gear fatigue in high-power applications. Built to handle racing-level stress, this kit provides predictable performance through consistently crisp shifts and improved drivetrain response.

Coan’s American-made construction and precision machining ensure that the planetary set drops into place without additional machining or alterations, perfect for race-prep or aggressive street-thrill builds. Whether competing in bracket drag, road-racing, or restoring resilience to a high-mileage build, this Maximum Duty planetary upgrade elevates strength, reliability, and geartrain excellence in the TH400 platform.