The Garrett GTW3884JB SuperCore is a journal bearing turbo core built for enthusiasts and shops seeking serious 6766-class performance without paying for a full ball bearing setup. Delivered as a Supercore (turbo without turbine housing), it gives builders the flexibility to pair it with the exact turbine housing their application demands. This is the choice for those who want proven GTW Series engineering at a competitive price point.
Specifications
- Compressor Wheel Inducer: 67.3mm
- 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
- Compressor Housing Frame: T04S
- Compressor Inlet: 4″
- Compressor Outlet: 2.5″
- Anti-Surge: Built-in & machined anti-surge
- HP Potential: 950 HP
- Garrett P/N: 841297-5005S
- Also Known As: GTW6765JB
Performance & Application
The GTW3884JB is Garrett’s Performance solution to the popular 6766 size turbo, engineered for builds targeting serious high-horsepower output. As a journal bearing unit, it offers a durable and cost-effective alternative within the GTW Series lineup while still delivering strong flow characteristics for aggressive power goals. The built-in and machined anti-surge feature on the T04S compressor housing helps extend the usable range of the compressor map, making this core well suited for high-boost, high-output applications. This Supercore configuration allows builders to finish the setup with a turbine housing matched to their specific manifold and A/R requirements.
Frequently Asked Questions
- What HP can the GTW3884JB support?
- This turbo has a potential flow capacity of 950 HP.
- Is this a ball bearing or journal bearing turbo?
- The GTW3884JB is a journal bearing turbo.
- What compressor housing features does this turbo use?
- It uses a T04S frame compressor housing with a 4″ inlet, 2.5″ outlet, and built-in & machined anti-surge.
- What does GTW6765JB refer to?
- GTW6765JB is an alternate name for the Garrett GTW3884JB.
For builders chasing serious power in the popular 6766 turbo size, the GTW3884JB SuperCore delivers Garrett-engineered performance and proven flow capability at a price that makes sense.
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