My car was heavy 3650 dry so I had steep gears 456-1. The higher the ratio the more heat it will make. I ran a 5000 tight on the street. Good trans cooler. The Higher the ratio the easier the car will pull . You'll need a engine that likes RPM's we normally shifted at 8000 - 8300,
It had seen up to 9300 Playing with it. Low to mid 10's through the mufflers with tailpipes. Playing lets do the twist on the stereo.
If you like RPM's 5000 stall is your daddy. 14000 rpms with a 636 on methanol. The music you would have to experience in the seat pulling 6 gears to appreciate.
