Originally Posted by
EAMotorsports
I dropped from a 3.50-3.60 Rollout to a 3.15 in `12th with the SPX.
EA
That is a huge drop. Going from a 91.4mm (3.60") rollout to an 80mm (3.15") would be a 6-tooth drop. I will use this info and test it out on the track next weekend.