If I wanted to lower the RPM I cross the finish line at would it be better to short shift or shift at a higher RPM? Trans is a 727, (I know a gear change or taller rear tire would be the idea way, but trying to avoid that at the moment).
Are you trying to slow the car down or are you trying to go the same speed with less RPM? If you want to slow the car down then use a rev limiter or your right foot. If you want to go the same speed at a lower engine speed then you probably need to change gearing as well as the converter. Just changing gearing or tire size typically doesn't change engine RPM very much with an automatic since the converter slips more with the additional load.
