I am referring to drag racing. Road racing a turbo v8 is a nightmare. I have a perfect example of that sitting in my shop right now. WAY more power than any road race car needs or could use. 6 speed manual gear box. The car is horrible for road racing, and horrible for drag racing. It is now going to be used for top speed runs at various events. Anyway, when you are talking about V8s with large turbos, viable transmission choices dwindle. The broad tq developed by a turbo 8cyl simply doesn't need that many progressive gears to get it to move along. Doing so only makes the car more complicated and delicate.