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The Grand National, known for its turbocharged V6 engine, has become a classic among performance enthusiasts. Upgrading the turbocharger is one of the most effective ways to achieve significant horsepower gains. In this article, we will explore the top 10 best turbo upgrades from Garrett and Precision that can help you reach over 400 horsepower.
1. Garrett GT3582R Turbocharger
The Garrett GT3582R is a popular choice for Grand National enthusiasts looking to push their horsepower beyond 400. With its efficient design and quick spool characteristics, this turbocharger provides an excellent balance of power and responsiveness.
- Compressor Wheel: 58mm
- Turbine Wheel: 82mm
- HP Gain: 400+
2. Precision 6266 Turbocharger
The Precision 6266 is engineered for high-performance applications, making it a perfect fit for those seeking significant power increases. Its large compressor and turbine wheels allow for fantastic airflow and efficiency.
- Compressor Wheel: 66mm
- Turbine Wheel: 62mm
- HP Gain: 450+
3. Garrett GTX3076R Turbocharger
The GTX3076R from Garrett is known for its advanced aerodynamics, which leads to quicker spool times and increased efficiency. This turbocharger is ideal for those looking to maximize their Grand National’s performance.
- Compressor Wheel: 76mm
- Turbine Wheel: 60mm
- HP Gain: 400+
4. Precision 6766 Turbocharger
The Precision 6766 is designed for serious power seekers. With its larger compressor and turbine wheels, this turbocharger can handle high boost levels, providing exceptional horsepower gains for the Grand National.
- Compressor Wheel: 66mm
- Turbine Wheel: 76mm
- HP Gain: 500+
5. Garrett GT3586R Turbocharger
The GT3586R turbocharger is another excellent option from Garrett, offering a combination of high flow and quick spool capabilities. This turbocharger is perfect for those looking to achieve a balance between street drivability and track performance.
- Compressor Wheel: 86mm
- Turbine Wheel: 70mm
- HP Gain: 450+
6. Precision 6870 Turbocharger
The Precision 6870 turbocharger is designed for maximum performance, providing excellent power potential for the Grand National. With its large compressor and turbine, it can support high horsepower builds.
- Compressor Wheel: 70mm
- Turbine Wheel: 68mm
- HP Gain: 600+
7. Garrett GT42 Turbocharger
The GT42 turbocharger from Garrett is built for extreme performance applications. If you’re looking to push the boundaries of your Grand National, this turbo is capable of delivering massive horsepower gains.
- Compressor Wheel: 88mm
- Turbine Wheel: 76mm
- HP Gain: 700+
8. Precision 7685 Turbocharger
The Precision 7685 turbocharger is designed for those who want to achieve serious horsepower numbers. With its advanced design, this turbocharger can support high boost levels while maintaining efficiency.
- Compressor Wheel: 85mm
- Turbine Wheel: 76mm
- HP Gain: 800+
9. Garrett GTX5533R Turbocharger
The GTX5533R is an excellent option for those seeking extreme performance. With its large compressor and turbine, this turbocharger can support high horsepower builds while providing quick spool times.
- Compressor Wheel: 88mm
- Turbine Wheel: 83mm
- HP Gain: 900+
10. Precision 8285 Turbocharger
The Precision 8285 turbocharger is the ultimate choice for those looking to achieve the highest horsepower levels. This turbocharger is built to handle extreme conditions and provides unparalleled performance for the Grand National.
- Compressor Wheel: 85mm
- Turbine Wheel: 85mm
- HP Gain: 1000+
Upgrading your Grand National’s turbocharger can significantly enhance its performance, allowing you to achieve over 400 horsepower with the right components. The options listed above from Garrett and Precision provide a range of choices to suit different performance goals and driving styles.