Infiniti 400 Red Sport engine confirmed for Nissan Z Proto

There has been much speculation about the Nissan Z Proto's engine. We've long suspected that the Z concept was powered by the 400-horsepower twin-turbo V6 from the Infiniti 400 Red Sport series. Now that hunch has been confirmed by photos of the Z Proto's engine bay.

Though it's a fully running concept, Nissan has never opened the hood of the Z Proto for the press. However, a lucky photog happened to be at the Nissan Crossing showroom in the ritzy Ginza shopping district of Tokyo just as workers had the hood popped. The venue is a popular showcase for Nissan's latest and greatest, and displays rotate frequently. This looks like an after-hours change over, but Instagrammer layersworks was able to take a few shots through the large picture window.