Originally Posted by littlejuanito

Part of the Z tradition has been it's numerical configurations: 240, 260, 280, 300, 350 and 370. So if they decided to stay true to this, (which they should) then the next Z should be the 380z or 400Z or whatever. We know the number represents the size of the engine, and this is where Nissan would have a problem.

I don't think Nissan is making big liter engines due to emissions. The Q50 400 Red is called that not because of the engine size but fort it's horsepower.

So, Nissan is at a crossroads. If they call the next Fairlady a 400Z based on Horsepower, then they would be braking a 50 year old tradition of naming the car based on the engine size.

I very well think this is it for the Z as it can not continue with this numeration without braking tradition.