The amount the front end of a Ford F150 can be raised by adjusting the torsion bars depends on how many turns are made[1]. However, it is generally recommended to start with 4-5 full turns and then check the height difference[1]. According to one forum post, the maximum lift from stock ride height is 1-1.5 inches[2]. Torsion bars can be easily adjusted to increase ride height[3], and there are kits available that make this process simple[4].