The Garrett G30-770 Standard Rotation turbocharger is built for enthusiasts who demand a rapid-spooling, high-flowing turbo without sacrificing top-end capability. Featuring an open T3 undivided turbine inlet and a 3″ V-band outlet, this configuration is engineered for builders who want proven G Series performance with simplified housing compatibility. It’s the right choice for anyone building a serious street or track platform around the G30 family.

Specifications

• Compressor Wheel Inducer: 58mm
• Compressor Wheel Exducer: 71mm
• Compressor Wheel Trim: 65
• Compressor Housing A/R: 0.72
• Turbine Wheel Inducer: 60mm
• Turbine Wheel Exducer: 55mm
• Turbine Wheel Trim: 84
• Turbine Housing A/R: 0.83
• Turbine Housing Inlet: T3 Open (undivided) inlet (same flange size and placement as GTX)
• Turbine Housing Outlet: 3.55 inch (90mm) O.D. w/81mm centering ring V-Band
• Rotation: Standard Rotation

Performance & Application

This G30-770 configuration is designed to deliver aggressive mid-range boost while maintaining strong high-RPM airflow, making it well suited for both street and track applications. The 0.72 A/R compressor housing paired with the 0.83 A/R undivided turbine housing balances quick spool with sustained top-end power. Its open T3 undivided turbine inlet shares the same flange size and placement as GTX turbines, simplifying manifold compatibility for builders upgrading from or planning around GTX-based systems. The 3″ V-band turbine outlet further streamlines exhaust housing integration for performance installations.

What’s Included

• Oil Feed (1mm) Restrictor Fitting to -4AN
• Two Coolant Fittings to -6AN

Frequently Asked Questions

What is the compressor housing A/R ratio on the G30-770?

The compressor housing A/R ratio is 0.72.

What is the turbine housing A/R ratio?

The turbine housing A/R ratio is 0.83, using an open, undivided T3 inlet configuration.

What turbine inlet flange does this turbo use?

It uses an open T3 (undivided) inlet, which shares the same flange size and placement as GTX turbines.

What size is the turbine housing outlet?