TCI 223600 TH400 Heavy-Duty Forward Drum and Billet Steel Input Shaft Assembly

Upgrade your TH400 automatic transmission with the TCI 223600 Heavy-Duty Forward Drum and Input Shaft Assembly. Designed for demanding street, race, and high-performance applications, this kit combines a reinforced forward drum with a billet steel input shaft to provide improved strength and durability over conventional components. The assembly is engineered as a direct-fit solution for compatible TH400 transmissions, helping simplify installation during transmission rebuilding or performance upgrades.
The heavy-duty drum is designed to withstand increased power levels and the stress associated with aggressive shifting, high-torque engines, and performance driving. Its billet steel input shaft provides enhanced resistance to twisting and fatigue compared with standard cast or stock-style shafts, supporting reliable power transfer through the transmission. Together, these components help address common weaknesses in high-performance TH400 builds while maintaining the transmission’s intended operating design.
The TCI 223600 kit is suitable for builders seeking dependable internal upgrades without replacing the entire transmission assembly. It is recommended for use with compatible TH400 applications and should be installed by a qualified transmission technician who can verify fitment, clearances, and related component condition. This assembly is supplied as a matched forward drum and input shaft combination for convenient performance-focused installation. It is not air restricted and does not require truck freight shipping.

Features:

• Heavy-duty forward drum assembly for compatible TH400 transmissions

• Billet steel input shaft for increased strength and durability

• Designed for high-performance street, racing, and high-torque applications

• Helps improve resistance to twisting, fatigue, and transmission-related stress

• Direct-fit style replacement for compatible TH400 transmission builds

• Matched drum and input shaft assembly simplifies performance upgrades

• Brand: TCI

• Part Number: 223600