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The Cummins 6.7L engine is a popular choice among diesel enthusiasts looking to enhance their power output. Two turbochargers that often come up in discussions are the Precision Turbo 6466 and the S366. This article will explore the differences, advantages, and potential drawbacks of each turbocharger to help you make an informed decision for your performance goals.
Overview of Precision Turbo 6466
The Precision Turbo 6466 is known for its efficiency and ability to produce significant horsepower. It is designed with a 66mm compressor wheel and a 66mm turbine wheel, offering a balance between spool time and top-end power. This turbocharger is often favored for applications requiring a blend of street and track performance.
Key Features of Precision Turbo 6466
- Compressor Wheel Size: 66mm
- Turbine Wheel Size: 66mm
- Horsepower Potential: Up to 800 HP
- Spool Time: Quick spool with minimal lag
Overview of S366 Turbocharger
The S366 turbocharger is part of the BorgWarner line and is popular among Cummins enthusiasts for its reliability and performance. With a 66mm compressor wheel and a 73mm turbine wheel, the S366 is designed for higher horsepower applications, making it a solid choice for those seeking maximum power output.
Key Features of S366
- Compressor Wheel Size: 66mm
- Turbine Wheel Size: 73mm
- Horsepower Potential: Up to 750 HP
- Durability: Known for its robust construction
Performance Comparison
When comparing the Precision Turbo 6466 and the S366, several performance factors come into play. Each turbocharger has its strengths depending on your specific power goals and driving style.
Spool Time and Responsiveness
The Precision Turbo 6466 is often praised for its quick spool time, making it an excellent choice for street applications where responsiveness is key. The S366, while slightly slower to spool, compensates with higher top-end power, making it suitable for racing and high-performance applications.
Power Output
In terms of raw horsepower, the Precision Turbo 6466 can achieve up to 800 HP, while the S366 typically reaches around 750 HP. However, the S366’s larger turbine wheel allows for better airflow at higher RPMs, which can be beneficial for sustained power during racing.
Installation Considerations
Installing either turbocharger requires some mechanical knowledge and the right tools. Both turbos fit the Cummins 6.7L engine, but there are differences in installation complexity and compatibility with existing setups.
Precision Turbo 6466 Installation
The installation of the Precision Turbo 6466 is generally straightforward, especially for those who have experience with aftermarket turbo systems. It’s essential to ensure proper fitment and consider any additional modifications needed for optimal performance.
S366 Installation
The S366 may require more adjustments, particularly if you are upgrading from a smaller turbo. Ensuring compatibility with your exhaust manifold and intercooler setup is crucial for a successful installation.
Cost Analysis
Cost is always a factor when choosing a turbocharger. Both the Precision Turbo 6466 and S366 fall within a similar price range, but installation costs may vary based on the complexity of the setup.
Precision Turbo 6466 Pricing
The Precision Turbo 6466 typically retails for a higher price due to its advanced technology and performance capabilities. However, many users find the investment worthwhile for the power gains it provides.
S366 Pricing
The S366 is often considered a more budget-friendly option while still offering impressive performance. This makes it a popular choice for those looking to upgrade without breaking the bank.
User Experiences and Reviews
Feedback from users of both turbochargers can provide valuable insights into their performance and reliability. Here’s a summary of what users are saying:
- Precision Turbo 6466: Users appreciate the quick spool time and responsiveness in daily driving conditions.
- S366: Users highlight the durability and consistent power delivery during high-performance applications.
Conclusion: Which Turbocharger is Right for You?
Ultimately, the choice between the Precision Turbo 6466 and the S366 depends on your specific power goals and driving preferences. If you prioritize quick spool and street performance, the Precision Turbo 6466 is an excellent choice. However, if you’re looking for a turbo that excels in high-RPM situations and offers great durability, the S366 may be the better option.
Consider your overall setup, budget, and intended use when making your decision. Both turbochargers have their unique benefits, and either one can significantly enhance your Cummins 6.7L engine’s performance.