Speedmaster GM TH400 Transmission Billet Aluminum Full Manual 2-Speed Valve Body

The Speedmaster PCE634.1008.01 is a billet aluminum full manual 2-speed valve body engineered for GM TH400 transmissions. Constructed from premium billet aluminum, this valve body delivers precision control and durability for performance-oriented transmission builds and racing applications. The full manual design and 2-speed configuration provide builders with complete command over transmission shifting and engagement, making it ideal for custom hot rods, drag racing, and serious automotive enthusiasts who demand reliable, repeatable performance from their drivetrain.

This valve body is designed as a direct replacement or upgrade component for TH400 transmission systems. The billet aluminum construction ensures strength while maintaining tight tolerances required for consistent valve operation. Whether you're rebuilding a transmission for a classic muscle car, drag racer, or custom street rod, this manual 2-speed valve body delivers the control and build quality expected in high-performance applications.

Key Features & Benefits

• Billet Aluminum Construction: Precision-machined from billet aluminum for durability, strength, and reliable performance in demanding applications.
• Full Manual Control: Delivers complete manual operation for custom shifting and transmission engagement tailored to your driving needs.
• 2-Speed Configuration: Engineered with 2-speed manual operation for precise transmission control in performance and racing builds.
• TH400 Compatibility: Designed specifically for GM TH400 automatic transmissions as a direct replacement or upgrade component.
• Silver Finish: Professional silver finish provides a clean appearance and corrosion-resistant coating.

Specifications

Ideal Applications

• Custom TH400 transmission builds for hot rods and classic cars
• High-performance drag racing transmission systems
• Manual transmission control upgrades for performance vehicles
• Custom street rod and muscle car drivetrain rebuilds