Is there a figure for raising the Front End , like 1 complete turn of the adjusting bolt = 1/2" (I just threw that figure in) higher or lower? or do you just turn the adjustment bolts and measure the top lip of the fender? thanks.

Measure where it's at now, then give them 1 turn, drive it around the block, measure it again and see where it ends up.

If your going to change your ride highth your gonna need an alignment check. Everything changes. JMHO.

What those other guys said.

Each car differs, depending on model of car, size of engine, diameter and age of T-bars, and the phase of the moon. Even on your individual car, it will not be a linear association of "this many turns equals one inch of height change". Adjust, drive, evaluate, repeat until happy. Then re-align.