Speedmaster GM TH400 Racing Heavy Duty Transmission Input Shaft & Aluminum Forward Drum PCE623.1009

The Speedmaster PCE623.1009 is a GM TH400 racing heavy duty transmission input shaft and aluminum forward drum assembly designed for high-performance automotive applications. This component combines a reinforced input shaft with an aluminum forward drum to deliver the durability and reliability required in demanding racing and modified transmission builds.

This assembly is engineered for TH400 transmission compatibility and offers the weight-saving benefits of aluminum drum construction while maintaining the strength needed for racing duty. The heavy-duty design makes it suitable for engine swaps, transmission rebuilds, and performance restoration projects where OEM reliability is essential. Whether you're building a street performance engine or preparing for track duty, this input shaft and drum assembly provides the critical drivetrain component needed for a dependable power transfer system.

Key Features & Benefits

• Heavy Duty Racing Design: Built for high-performance automotive applications with reinforced construction to handle demanding driving conditions.
• TH400 Transmission Compatible: Direct fit component engineered specifically for GM TH400 automatic transmission systems.
• Aluminum Forward Drum: Lightweight aluminum construction reduces overall drivetrain weight while maintaining structural integrity.
• Complete Assembly: Input shaft and forward drum unit arrives ready for installation into transmission builds.

Specifications

Ideal Applications

• TH400 transmission rebuilds and restoration projects
• High-performance engine swap installations
• Racing and modified vehicle builds
• Transmission component upgrades for street performance