Speedmaster PCE602.1007 GM Turbo 400 TH400 Billet 300M Steel Input Shaft

The Speedmaster PCE602.1007 is a precision-engineered billet 300M steel input shaft designed for GM Turbo 400 (TH400) transmissions. This heavy-duty component is built to withstand high-torque, high-performance engine applications and transmission modifications where stock components may reach their limits. 300M steel construction provides superior strength and durability compared to OEM alternatives, making it an ideal choice for racing, turbo builds, and modified street performance vehicles.

This input shaft is engineered for direct fitment into GM Turbo 400 transmissions, ensuring compatibility with existing transmission housings and clutch packs. The billet manufacturing process creates a denser, more uniform material structure that resists stress fractures and premature failure under demanding driving conditions. Whether you're building a race car, restoring a classic muscle car with modern performance upgrades, or reinforcing a street machine for increased horsepower, this component delivers the reliability and strength required for serious automotive applications.

Key Features & Benefits

• Billet 300M Steel: Premium material construction offers superior strength and durability for high-torque transmission applications.
• GM TH400 Fitment: Direct compatibility with GM Turbo 400 transmissions without modification.
• High-Performance Design: Engineered for turbo builds, racing, and modified engines requiring reinforced drivetrain components.
• Enhanced Durability: Billet construction resists stress fractures and failure under extreme torque conditions.

Specifications

Ideal Applications

• High-performance turbo and supercharged engine builds
• Racing and competition transmission applications
• Modified street performance vehicles requiring reinforced drivetrain components
• Restoration projects upgrading to modern performance standards