Speedmaster GM TH400 Heavy Duty Racing Transmission Billet Aluminum Direct Drum PCE623.1010

The Speedmaster GM TH400 Heavy Duty Racing Transmission Billet Aluminum Direct Drum (PCE623.1010) is a performance-grade transmission component engineered for high-output racing and heavy-duty automotive applications. Built with billet aluminum construction, this direct drum is designed to withstand the demands of high-horsepower engines and aggressive driving conditions, making it an ideal upgrade for TH400 transmission builds targeting maximum durability and reliability.

This billet aluminum direct drum delivers superior strength compared to OEM cast components, with enhanced material density and precision engineering that resists deformation under extreme torque loads. The TH400 platform remains one of the most popular heavy-duty automatic transmissions in performance automotive circles, and upgrading to billet internals like this direct drum is a proven method to extend transmission life and handle increased power levels. Whether you're building a dedicated drag racing transmission, a street performance engine, or a heavy hauling setup, the PCE623.1010 direct drum offers the reinforcement needed for reliable operation.

Key Features & Benefits

• Billet Aluminum Construction: Premium billet aluminum material provides superior strength and durability compared to factory cast components.
• GM TH400 Compatible: Purpose-built for TH400 automatic transmission applications and high-performance builds.
• Heavy Duty Racing Grade: Engineered and rated for extreme torque and high-horsepower racing environments.
• Direct Drum Design: Optimized drum geometry for improved power transfer and reduced slip in aggressive driving conditions.

Specifications

Ideal Applications

• High-performance drag racing transmission builds
• Street performance and hot rod engine upgrades
• Heavy-duty truck and hauling transmission reinforcement
• Competition and bracket racing TH400 builds