Garrett GBC37-900 67mm Turbocharger

The GBC37-900 67mm is a Garrett Boost Club (GBC) supercore with a journal bearing rotating group and a 360-degree thrust bearing, an oil-cooled center housing, a billet extended-tip compressor wheel and a machined boost signal port with an installed plug. Choose the stainless steel turbine housing below.

Garrett rates the GBC37-900 67mm for 450 to 900 horsepower on 2.0 to 5.5 liter engines.

Key Specifications

• Series — GBC (Garrett Boost Club)
• Frame size — 37 frame
• Horsepower rating — 450–900 hp (Garrett rating)
• Engine displacement — 2.0–5.5 L
• Compressor wheel — 67 mm inducer, 84 mm exducer, 64 trim, 0.72 A/R housing
• Turbine wheel — 73 mm inducer, 65 mm exducer, 80 trim
• Maximum compressor flow — 87 lb/min (Garrett)
• Maximum pressure ratio — 4.0 (about 44.1 psi of boost at sea level)
• Bearing — Journal bearing
• Center housing — Oil cooled
• Supercore part number — 913840-5002S

Turbine Housing Options

Each turbine housing is listed by A/R (area-to-radius ratio), inlet flange, outlet and wastegate type. "Internal" housings have a built-in wastegate; "External" housings are free-float designs that require an external wastegate.

Important Information

Garrett calculates its horsepower ratings from the compressor map choke flow, which represents the potential flywheel horsepower of the turbo. Actual results depend on the engine, supporting modifications and calibration.

For race vehicles only. Not for use on public roads.

Installation and Tuning Available at Race Protocol

Turbo system design, installation and dyno tuning are available in house. Call (724) 732-8948 to discuss your build.