Nissan has added their new VQ35 V6 engine to the 2007 Nissan 350Z. The 2007 Nissan 350Z will now produce 306 horsepower just like the 2007 Infiniti G35 sedan that carries the same engine. The VQ35 V6 engine is a 3.5 liter engine that gives the 2007 Nissan 350Z about 17 -20 horsepower more than the 2006 models actual output.