I urgently need some help sorting out a gearbox for my Astra Race Car. I race it in 750MC Hot Hatch and the regs say that you can use any standard available ratio from the model range. At the moment the car is geared for about 175MPH in 5th at 8000rpm. I want it to be geared for about 130MPH. At the moment Im using an F20.
Does anyone know of a ratio set that is avaliable to improve this. I could go and get a quaife set but that will cost me about £1500!
I am racing again in a couple of weeks so urgently need a bit of help