I just tried to optimize my TB on a 2000 SVT. I was following the instructions given by Scott Burton (July 2001). THe thing is he mentioned that butterfly was mounted to a half-circle on the throttle shaft. My shaft is a full cirle with a slot in it for the butterfly. So I rounded off the screws and polished everything. So does anybody else have this TB shaft and what did you do? Cut half the round off to make a flat surface?
