Originally Posted by
chevtech23
Just picked up a new tc6 for some carpet VTA. Not sure where to start gearing wise, will be running a 21.5 motor.
for a 21.5 motor, you will want to run around a 4.0 FDR. the internal ratio is 2.0, so you will want around a 96t spur and 48t pinion. That will be a good starting point for you