I have a Ken Block box stock, And a Kyle Busch again box stock. Both of them the brushless models. Got them used so did not get manuals or the other pinions that are suppose to come with them.

Now my question (and yes I have searched to no avail) what would be the optimum gearing or a good start to achieve maximum top speed on a 3 cell lipo. I have a long stretch of road to gain the speed and will be running foams. May invest in a more aerodynamic body but will try th KB body for now. I just need a little advice as I am new to running electric cars. Been a nitro head forever. And with running my nitros I never really bothered with gearing so I never really bothered to learn about it. So now I wanna put down some good speed numbers and need a little advice. So any kind of help would be much appreciated