The Garrett GTW3884JB SuperCore is built for serious enthusiasts and shop builders who want a proven high-flow foundation without paying for a turbine housing they don’t need. As part of Garrett’s GTW Series, it delivers the performance characteristics that made the popular 6766-size turbo a favorite, packaged into a journal bearing core that offers strong output at a more accessible price point.
Specifications
- Compressor Wheel Inducer: 62.3mm
- Compressor Wheel Exducer: 84.4mm
- Compressor Wheel Trim: 64
- Turbine Wheel Inducer: 74.2mm
- Turbine Wheel Exducer: 64.6mm
- Turbine Wheel Trim: 76
- Bearing Type: Journal Bearing
- HP Potential: 950 HP potential flow
- Compressor Housing Frame: T04S Frame
- Compressor Inlet Size: 4″
- Compressor Outlet Size: 2.5″
- Anti-Surge Design: Built-in & machined anti-surge
- Garrett P/N: 841297-5003S
- Also Known As: GTW6265JB
Performance & Application
This SuperCore is engineered for builders targeting big-turbo power levels while retaining a responsive journal bearing platform. With 950 HP potential flow, it’s suited to high-performance street and competition applications where a strong midrange and confident top-end are priorities. The T04S frame compressor housing, featuring a large inlet and outlet along with integrated anti-surge machining, is designed to keep the compressor operating efficiently across a wide range of boost conditions. As a supercore, it gives builders the flexibility to pair it with the turbine housing that best matches their specific manifold and application.
Frequently Asked Questions
- What HP can the GTW3884JB support?
- The GTW3884JB offers 950 HP potential flow.
- Is this a ball bearing or journal bearing turbo?
- The GTW3884JB is a journal bearing SuperCore.
- What does GTW6265JB refer to?
- GTW6265JB is an alias used for the Garrett GTW3884 62mm journal bearing SuperCore.
- What compressor housing configuration does this use?
- It uses a T04S frame compressor housing with a 4″ inlet, 2.5″ outlet, and built-in, machined anti-surge design.
For builders who want the GTW3884’s proven flow capacity and journal bearing responsiveness without the cost of an unneeded turbine housing, the GTW3884JB SuperCore delivers a direct path to serious horsepower.
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