The Nissan 370Z remains one of the most engaging sports cars of the past decade, and the secret to its thrilling performance lies beneath the hood. While the factory 3.7-liter VQ37VHR engine delivers a lively mix of power and precision, many enthusiasts find themselves looking for ways to coax out more torque, horsepower, and responsive throttle feel. Nissan 370Z engine upgrades transform the driving dynamics of the car, turning already sharp handling into a more formidable force on both back roads and strip days.
Factory Power and Its Limits
Under the hood, the 370Z comes equipped with a naturally aspirated V6 that produces around 332 horsepower and 270 lb-ft of torque in its standard form. This output is more than enough for spirited back-road drives, but the linear power curve and high-revving nature of the VQ37VHR leave room for improvement. Enthusiasts often hit a plateau where stock tuning, intake, and exhaust modifications no longer satisfy the desire for stronger mid-range punch and better top-end pull. This is where Nissan 370Z engine upgrades begin to justify themselves by addressing the gaps the factory calibration leaves behind.
Forced Induction: The Power Multiplier
Turbocharger and Supercharger Paths
One of the most effective Nissan 370Z engine upgrades is adding forced induction, and both turbocharging and supercharging have proven successful on the VQ37VHR. A turbocharged setup can push output into the 400+ horsepower range while maintaining strong mid-range torque that makes the car feel responsive in everyday driving. Supercharger kits, by contrast, offer immediate throttle response since the compressor is driven directly by the engine, delivering power in a more linear fashion. Choosing between these paths often comes down to personal preference for top-end surge versus low-RPM punch.
Supporting Modifications for Boosted Engines
For any forced induction Nissan 370Z engine upgrades, it is crucial to reinforce the internal strength of the engine. This includes upgrading the pistons, connecting rods, and, in many cases, the crankshaft to handle the additional stress. A robust cooling system is equally important, so many builders opt for an intercooler and improved oil cooler to manage temperatures. Without these supporting modifications, the gains from boost can lead to premature wear or even catastrophic failure, especially under track conditions.
Naturally Aspirated Enhancements
Not everyone wants the complexity of boost, and there are compelling Nissan 370Z engine upgrades that keep the V6 naturally aspirated while extracting more power. A high-flow air filter, a less restrictive exhaust system, and recalibrated ECU tuning can unlock additional horsepower by improving airflow and optimizing ignition timing. For those seeking more serious outputs, a full race camshaft combined with high-compression pistons and larger throttle bodies can transform the character of the engine, delivering a more aggressive sound and higher peak power.
Drivetrain and Cooling Considerations
Increasing output puts extra stress on the drivetrain, so it is wise to address the transmission, clutch, and differential when planning Nissan 370Z engine upgrades. A limited-slip differential can improve traction during hard acceleration, while a performance clutch adds durability for aggressive launches. Upgraded transmission cooling is also highly recommended, especially for cars subjected to repeated hard pulls or frequent track sessions. These additions not only protect the investment in power but also contribute to consistent performance under duress.
