Turbo 400 Transmission Case Cast Bare Case, No Internals

Turbo 400 Transmission Case — Cast Bare Case, No Internals

The Aeroflow TH400 transmission case is designed to replace the stock GM TH400 automatic transmission case. This bare case is cast from heavy‑duty aluminium and is intended for performance builds where you reuse factory TH400 internals and external components.

Manufactured from heavy‑duty cast aluminium which meets SFI standards, but not currently SFI approved.

This case has been developed to eliminate all weak points found in the original hard to find GM transmission case. It accepts all factory GM TH400 components both internally and externally, giving you a reliable foundation for your build while maintaining compatibility with your existing parts.

We recommend pairing this transmission case with our bellhousing (AF72-2200) and rear extension housing (AF72-2240), both sold separately, to complete your TH400 assembly.

Ideal for performance enthusiasts, rebuilders, and racers who need a sturdy, compatible bare case to house their GM TH400 components without the limitations of the original OEM housing.

• Bare cast aluminium TH400 case — no internals
• Direct replacement for the GM TH400 case
• Accepts all factory GM TH400 components internally and externally
• Engineered to eliminate weak points of the original GM case
• Meets SFI standards, but not currently SFI approved
• Pair with AF72-2200 Bellhousing and AF72-2240 Rear Extension Housing (sold separately)