VQ35HR 3.5L Engine. 370Z, G37

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The Nissan 350Z & Infiniti G35 made their original debut with the VQ35DE 3.5L V6 engine. In 2007, Nissan introduced the VQ35HR engine for the final years of the 350Z and G35. Then came the VQ37VHR 3.7L V6 for the newer 370Z & G37 models in 2009. Despite these engines sharing the same VQ engine family there are some major differences. In this guide, we compare the VQ35HR vs VQ37VHR engines including specs, performance, reliability, and more.

Nissan VQ35HR vs VQ37VHR Engines - Specs, Reliability, Performance

Nissan VQ Engine Family

VQ engines from Nissan are in a plethora of years and models. They began production in 1994 and the VQ engines are still found in some models as of 2023. The VQ engines all share the same general V6, aluminum, DOHC design. However, displacement ranges anywhere from 2.0L

Of course, the VQ engines as a whole aren’t our main focus here. We’re specifically looking at the Nissan VQ35HR vs VQ37VHR. We’ll also include some info for the older VQ35DE engines to tie everything together. That said, let’s lay out some of the basic details for these three VQ engines.

VQ35DE 3.5 V6

Again, the original VQ35DE isn’t our main focus of this article. It does, however, help wrap everything together when it comes to the VQ35HR vs VQ37VHR engines. Anyway, the VQ35 made its debut in the 2002 Nissan Altima. It’s in the following years for the 350Z and G35:

  • 2003-2006 Nissan 350Z
  • 2003-2006 Infiniti G35

The standard VQ35 engine offers 287 horsepower and 274 lb-ft. A Rev-Up variant was introduced in 2005 with 298hp and 268 lb-ft. Only certain models have this engine, and the give-away is a 7,000 redline vs 6,500.

VQ35HR Engine

Nissan took the VQ35 a step further with the release of the VQ35HR engine. It shares the same base design in being a 3.5L V6; the engine block and a few other things remain the same. However, the HR variant uses around 80% newly designed parts so it’s a very different engine. It’s in the following Z and G35 years:

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