3.73gear and line lock...Burnout ??

2 at the least. Depends on the type of tires. I run my et streets through 2nd and 3rd real quick to heat them up. I don't have line lock either. You could do it in what ever gear you want as long as your tires don't start to hook. But if you mean at the track you could just do it in 2nd for 10seconds.