Garrett Boost | Club Line GBC35-700 58mm Turbocharger — Select Turbine Housing
Part Number: 913840-5001S
The Garrett Boost | Club Line GBC35-700 is a standard-rotation, journal-bearing turbocharger platform rated by Garrett for 400–700 horsepower and 2.0- to 5.0-liter engine applications. Its 58/76 mm forged and fully machined compressor wheel is paired with a 68/62 mm Inconel turbine wheel, providing responsive airflow capability in a durable, serviceable, and comparatively affordable package.
The GBC35-700 combines GTX Gen II-derived compressor aerodynamics, an extended-tip compressor-wheel design, modern gasoline-performance turbine aerodynamics, and Garrett’s latest-generation journal-bearing rotating group with a 360-degree thrust bearing. Garrett publishes compressor capability of up to approximately 68 lb/min and a pressure ratio of up to 4.1.
This product is configured by selecting one of three compatible genuine Garrett turbine-housing kits. Available configurations include 0.82 A/R open T3, 0.82 A/R open T4, and 0.95 A/R divided T4 turbine housings. Each housing uses a 90 mm / 3.5-inch V-band turbine outlet and requires an external wastegate.
A supercore-only option is also available for customers who already have a compatible standard-rotation Garrett GBC35 turbine housing. The 0.82 A/R open T4 housing is the recommended RAD default for conventional non-divided T4 exhaust manifolds.
Key Features
- Garrett-rated 400–700 horsepower range
- Garrett reference displacement range of 2.0–5.0 liters
- 58 mm compressor-wheel inducer and 76 mm exducer
- 68 mm turbine-wheel inducer and 62 mm exducer
- Forged and fully machined billet compressor wheel
- Extended-tip compressor-wheel design
- GTX Gen II-derived compressor aerodynamics
- Up to approximately 68 lb/min published compressor flow
- Up to 4.1 published compressor pressure ratio
- Latest-generation journal-bearing rotating group
- 360-degree thrust bearing
- Inconel turbine wheel
- Ductile-iron SiMo+ turbine-housing construction
- Oil-cooled center housing
- Machined compressor-cover boost-reference port with installed plug
- Open T3, open T4, and divided T4 turbine-housing options
- External-wastegate configuration
- 90 mm / 3.5-inch V-band turbine outlet
- Outline interchangeable with the Garrett GBC37-900 for supported stage-change applications
Kit Includes
- 913840-5001S — Garrett GBC35-700 standard-rotation supercore
- Selected Garrett GBC35 turbine-housing kit when a housed configuration is ordered
- Garrett turbine-housing connection components and gasket kit supplied with the selected turbine kit
- Installed compressor-cover boost-reference-port plug
Technical Specifications
Compressor
- Compressor-wheel inducer: 58 mm
- Compressor-wheel exducer: 76 mm
- Compressor-wheel trim: 58
- Compressor-housing A/R: 0.72
- Compressor inlet: 101.6 mm / 4.00-inch hose connection
- Compressor outlet: 63.5 mm / 2.50-inch hose connection
- Compressor-wheel construction: Forged and fully machined aluminum
- Compressor technology: Extended-tip design with GTX Gen II-derived aerodynamics
- Published maximum compressor flow: Approximately 68 lb/min
- Published maximum pressure ratio: Approximately 4.1
- Boost-reference provision: Machined port with installed plug
Turbine
- Turbine-wheel inducer: 68 mm
- Turbine-wheel exducer: 62 mm
- Turbine-wheel trim: 84
- Turbine-wheel material: Inconel
- Turbine-housing material: Ductile iron, SiMo+
- Turbine-inlet options: Open T3, open T4, or divided T4
- Turbine outlet: 90 mm / 3.5-inch V-band
- Wastegate configuration: External wastegate required
- Rotation: Standard / clockwise
Bearing Housing and Lubrication
- Bearing system: Journal bearing
- Thrust bearing: 360-degree
- Center-housing cooling: Engine oil
- Water cooling: Not used
- Oil-feed and oil-drain fittings: Application specific and sold separately
Available Turbine Housings
- 740902-0124 — 0.82 A/R, open T4 inlet, 90 mm V-band outlet, external wastegate — Recommended RAD default
- 740902-0123 — 0.82 A/R, open T3 inlet, 90 mm V-band outlet, external wastegate
- 740902-0125 — 0.95 A/R, divided T4 inlet, 90 mm V-band outlet, external wastegate
- Supercore Only — No turbine housing
Application Notes
- The 0.82 A/R open T4 housing is the recommended default for conventional non-divided T4 exhaust manifolds.
- The 0.82 A/R open T3 housing provides the same nominal A/R with a T3 inlet footprint.
- The 0.95 A/R divided T4 housing is intended for a properly divided manifold that preserves exhaust-pulse separation to the turbine inlet.
- A divided housing should not be selected solely on the assumption that twin-scroll construction is inherently superior.
- All three listed turbine housings are externally wastegated and require a separate wastegate, wastegate springs, boost-control plumbing, and any electronic boost-control hardware.
- Every housed configuration uses Garrett supercore part number 913840-5001S.
- The selected turbine kit includes the housing connection components and gasket kit supplied by Garrett; mating exhaust-manifold and downpipe flanges are not included.
- The turbine-outlet weld flange and V-band clamp are not included.
- The turbine-inlet gasket or weld flange, as applicable, is not included unless specifically added to the order.
- Oil-feed fitting, oil-feed line, oil-drain fitting, oil-drain flange, and oil-drain line are not included.
- External wastegate, intake plumbing, charge piping, intercooler, exhaust manifold, downpipe, heat-management components, and application-specific installation hardware are not included.
- This is an oil-cooled journal-bearing turbocharger; no coolant plumbing is required.
- This is a universal performance turbocharger and is not supplied as a vehicle-specific installation kit.
- Garrett’s horsepower rating represents potential flywheel horsepower calculated from compressor-map choke flow. Actual output depends on engine airflow, fuel, boost pressure, exhaust backpressure, engine speed, intercooling, and tune.
- Final turbocharger and turbine-housing selection should account for engine displacement, intended power, torque target, exhaust-manifold design, duty cycle, packaging, and desired response.
Emissions and Competition-Use Notice
Unless specifically identified as emissions-legal for the applicable vehicle and application, this product is intended for sanctioned competition, off-road, or other non-emissions-controlled use. Installation or use on an emissions-controlled vehicle operated on public roads may violate federal, state, or local law. The purchaser and installer are responsible for confirming and maintaining compliance with all applicable emissions and vehicle-use regulations.