The Garrett G30-660 is a purpose-built turbocharger for enthusiasts and builders chasing serious, reliable power without sacrificing throttle response. Featuring an internally wastegated turbine housing and V-band connections throughout, this unit is engineered for street and competition applications where both spool-up and top-end capability matter. It’s the right choice for builders who demand a turnkey, high-flow solution backed by Garrett engineering.

Specifications

• Compressor Wheel Inducer: 54mm
• Compressor Wheel Exducer: 67mm
• Compressor Wheel Trim: 65
• Compressor Housing A/R: 0.70
• Compressor Housing Inlet: 3 Inch
• Compressor Housing Outlet: 2 Inch
• Turbine Wheel Inducer: 60mm
• Turbine Wheel Exducer: 55mm
• Turbine Wheel Trim: 84
• Turbine Housing A/R: 1.01 (Internally Wastegated)
• Turbine Housing Inlet: 3 Inch O.D. V-Band
• Turbine Housing Outlet: 3.55 inch (90mm) O.D. w/81mm centering ring V-Band
• Bearing Type: Ball Bearing
• HP Capacity: Up to 660 HP
• Garrett P/N: 880704-5003S

Performance & Application

Built around Garrett’s ball bearing core technology, the G30-660 is designed to deliver quick spool characteristics while sustaining power well into serious horsepower territory. The internally wastegated turbine housing simplifies installation for builders who want a self-contained boost control solution without plumbing an external gate. This configuration suits both aggressive street builds and competition applications where a balance of response and high-end output is required. The standard rotation and V-band in/out design make it a strong fit for builders standardizing on Garrett’s G Series platform.

What’s Included

• Oil Feed (1mm) Restrictor Fitting to -4AN
• Two Coolant Fittings to -6AN
• Turbine Housing Inlet & Outlet V-Band Clamps

Frequently Asked Questions

What HP can the Garrett G30-660 support?

The G30-660 is rated to support up to 660 HP.

Is the G30-660 a ball bearing or journal bearing turbo?

The G30-660 uses ball bearing construction.

What is the A/R ratio on the G30-660?

The compressor housing has a 0.70 A/R, while the internally wastegated turbine housing uses a 1.01 A/R.

What turbine housing connections does the G30-660 use?

The turbine housing features a 3 Inch O.D. V-Band inlet and a 3.55 inch (90mm) O.D. V-Band outlet with an 81mm centering ring.

For builders who need a self-contained, ball bearing turbocharger capable of supporting up to 660 HP with V-band convenience throughout, the Garrett G30-660 (P/N 880704-5003S) delivers the performance and engineering pedigree to back a serious build.