I'm not sure about the measurement you are specifically asking for, but with the bugpack style adjusters on a lowered car I weld them in at about 15-25 degrees up. That is the angle between the bottom flat portion of the adjuster and perpendicular to the front of the beam (ie square sitting on straight edge sitting on tubes). A picture would clear things up. This pic is bootlegged from samba and shows the adjusters in raised setting (about 45 degrees up):
Hope that helps.
Lanner