Depends on what you want the car to do. If you want to just drive around town, and getting off the line quickly is important, you would want one ratio. If you drive on the interstate, and want decent gas milage, you would want a higher (numerically lower) ratio. If you race the car occasionally, even deeper gears are needed, sometimes.

Tire size enters into the deal too. The taller the tire, the more it raises your gear ratio. Stick or auto trans is also a factor.

These are questions only you can answer.


Give us more info, and we can get you in the ball park, sort of.

Don