Table of Contents
The Nissan 370Z is a popular sports car known for its sleek design and impressive performance. Many enthusiasts seek to enhance its power output, and building a 400+ horsepower 370Z with the VQ37VHR engine is a common goal. This article will explore how to achieve this while maintaining reliability for daily driving.
Understanding the VQ37VHR Engine
The VQ37VHR engine is a 3.7-liter V6 that powers the Nissan 370Z. It features a DOHC design and utilizes variable valve timing technology, which contributes to its performance. To achieve over 400 horsepower, modifications are necessary, including upgrades to the intake, exhaust, and camshafts.
Key Modifications for Power Increase
- Upgraded JWT camshafts
- High-performance intake system
- Aftermarket exhaust system
- ECU tuning
- High-flow fuel injectors
Upgraded JWT Camshafts
JWT camshafts are designed to optimize the performance of the VQ37VHR engine. They improve airflow and increase power across the RPM range. The installation of these camshafts requires precise tuning to ensure the engine runs smoothly and efficiently.
High-Performance Intake System
A high-performance intake system allows for better airflow into the engine, which is crucial for achieving higher horsepower. Upgrading to a cold air intake can help increase the amount of air entering the engine, improving combustion efficiency.
Aftermarket Exhaust System
Replacing the stock exhaust system with an aftermarket option can significantly enhance the engine’s performance. A less restrictive exhaust allows for better airflow, which can contribute to increased horsepower and a more aggressive sound.
ECU Tuning for Optimal Performance
After making significant modifications to the engine, ECU tuning is essential. This process recalibrates the engine’s computer to optimize performance based on the new modifications. A professional tune can ensure that the vehicle runs reliably while maximizing power output.
Maintaining Reliability as a Daily Driver
With increased horsepower, maintaining reliability is crucial for daily driving. Here are some tips to ensure your modified 370Z remains dependable:
- Regular maintenance checks
- Use high-quality fluids and lubricants
- Monitor engine temperatures
- Invest in a quality cooling system
- Keep an eye on tire and brake wear
Regular Maintenance Checks
Regular maintenance checks are vital for any vehicle, especially one with performance modifications. Frequent inspections can help identify potential issues before they become serious problems.
Use High-Quality Fluids and Lubricants
Using high-quality fluids, such as engine oil and coolant, can significantly impact the longevity and reliability of your engine. These fluids help maintain optimal performance and prevent overheating.
Monitor Engine Temperatures
Keeping an eye on engine temperatures is crucial for a modified vehicle. Installing an aftermarket temperature gauge can help you monitor the engine’s performance and ensure it operates within safe limits.
Invest in a Quality Cooling System
A quality cooling system is essential for maintaining reliability, especially when pushing the engine to higher horsepower levels. Upgrading to a high-performance radiator can help manage engine temperatures effectively.
Keep an Eye on Tire and Brake Wear
With increased power, tires and brakes will experience more stress. Regularly checking tire tread and brake pad thickness can prevent accidents and ensure safe driving conditions.
Conclusion
Building a 400+ horsepower 370Z with the VQ37VHR engine and JWT camshafts is an exciting project that can yield impressive performance gains. By focusing on key modifications and maintaining reliability, you can enjoy a powerful yet dependable daily driver. With the right approach, your 370Z can become a formidable machine on the road while still being practical for everyday use.