big problem varishocks

[el-camino]

today i will do my first testdriving with the new suspension in my camino.
lower a arms from spohn and varishock coil overs 575lbs.
the first problem when i will move out of my garage: steering ! i can not steering easy
back on the car lift and i can see the tie-rods both side scrups on the chassis.
the next what i see and feel: no damping and absorbing, and i see the problem.
the lower a arm bumps on the chassis.
this pic is shot with the jack under the front end

what is the problem ? is the spring rate too low ?
when i install the new parts, the camino comes 2" lower than before