open the bleed screws on the front calipers and let them gravity bleed awhile,
did you remove or tie up the lSPV on the rear axle ?? if not and your lifted you wont get any fluid past the lspv
One other thing, if you allowed the brake fluid to drain out and didn't bench bleed the master or let it gravity bleed for a while the piston inside the master could lock up and get pined to one side. You may have to re-center the piston inside or you may have to replace the master if it is really jammed in there.
