Th350 Low Gear Planetary

The TCI TH350 Low Gear Planetary is a precision-engineered planetary gear set designed for TH350 automatic transmission builds and rebuilds. Built for enthusiasts and professional transmission builders, this component delivers the gear ratio control essential for custom performance applications, street builds, and racing platforms. The low-gear planetary configuration allows tuners to dial in specific first and second gear ratios that match engine power delivery, tire diameter, and acceleration objectives.

This planetary gear set features a 2.75 first-gear ratio and a 1.52 second-gear ratio, core specifications that determine transmission acceleration characteristics and overall drivability. The planetary design uses multiple pinion gears that transfer torque through a sun gear and ring gear configuration, enabling smooth power transfer while maintaining durability under load. Manufactured to tight tolerances and engineered for longevity, this gear set integrates seamlessly into complete TH350 transmission assemblies. At 9.82 lbs and compact dimensions of 8.3 x 8.3 x 10 inches, the unit is optimized for standard transmission packaging without compromising structural integrity.

Transmission builders, classic car restorers, and performance enthusiasts trust TCI components for reliability and precision fit. This planetary gear set is ideal for custom TH350 transmissions in street rods, muscle cars, trucks, and vintage vehicles seeking improved acceleration response. Installation requires full transmission disassembly and reassembly, making it essential for professional rebuilds or experienced builders with proper transmission tools. Verify compatibility with your complete transmission assembly and consult TH350 rebuild specifications before ordering to ensure correct planetary selection for your build goals.