The Garrett GTW3884JB is a purpose-built journal bearing turbocharger for enthusiasts chasing serious top-end power without sacrificing everyday drivability. Built on Garrett’s GTW platform, it delivers the performance profile of the popular 6466-class turbo at a highly competitive price point. Whether you’re building a dedicated track car or a high-horsepower street machine, this turbo is engineered to deliver strong, reliable output.
Specifications
- Compressor Wheel Inducer: 64.3 mm
- Compressor Wheel Exducer: 84.4 mm
- Compressor Wheel Trim: 58
- Turbine Wheel Inducer: 74.2 mm
- Turbine Wheel Exducer: 64.6 mm
- Turbine Wheel Trim: 76
- Turbine Housing A/R Ratio: .78 A/R
- Turbine Housing Configuration: T3 Divided
- Turbine Housing Outlet: 3″ V-Band
- Bearing Type: Journal Bearing
- Compressor Housing Frame: T04S Frame
- Compressor Housing Inlet: 4″
- Compressor Housing Outlet: 2.5″
- Anti-Surge Feature: Built-in & machined anti-surge
- HP Potential: 900 HP
- Garrett P/N: GTW3884JB
- Also Known As: GTW6465JB
Performance & Application
The GTW3884JB is designed for builders targeting significant horsepower gains while retaining a housing configuration suited to pulse-style exhaust manifolds. The T3 divided turbine housing helps manage exhaust pulses for improved turbine efficiency, while the journal bearing center section provides a durable, cost-effective rotating assembly. With its 900 HP potential, this turbo suits high-output street and race applications where strong mid-range and top-end power delivery are priorities. The machined anti-surge feature in the compressor housing helps extend the usable operating range of the compressor map.
Frequently Asked Questions
- What HP can the GTW3884JB support?
- The GTW3884JB has a 900 HP potential flow capacity.
- Is the GTW3884JB a ball bearing or journal bearing turbo?
- The GTW3884JB is a journal bearing turbocharger.
- What is the A/R ratio and turbine housing configuration?
- It features a .78 A/R T3 divided turbine housing with a 3″ V-band exhaust connection.
- What does GTW6465JB refer to?
- GTW6465JB is an alternate name (alias) for the Garrett GTW3884JB.
For builders who want proven GTW-series performance, journal bearing reliability, and a T3 divided housing built for serious horsepower, the Garrett GTW3884JB (GTW6465JB) stands out as a smart, performance-per-dollar choice.
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