U r thinking wrong. U need the pinion 3* lower than the end of the gear vendors. If your gv is really -5* down u need the pinion down 3* more than the gv. So the pinion needs to be at -8*. Go to the Doctor Diff website it all there. Kim
I believe you are not correct. If the trans is down X degrees, then the pinion needs to up the same amount of degrees under full load, to cancel each other out, from everything I have read.