Question about torsion bar adjustment

I think you’re explaining yourself correctly, you’re just completely ignoring the distance the LCA will travel from its new position. That distance is the problem.

Also, the load on the torsion bar does actually change depending on the position of the control arm. The weight of the car remains the same of course, but the load on the torsion bar changes with the effective length of the control arm. When the control arm is parallel to the ground, the length of the control arm and the effective length are basically the same. But when the control arm is at an angle, the horizontal distance from the ball joint determines the effective length. So, raising/lowering the car can actually change the load on the torsion bar at ride height, you’re changing the effective length of the control arm.

The procedure for installing the LCA is very clear in the factory service manual. The LCA pivot nut is supposed to be torqued at ride height. That makes the whole procedure more difficult. There is absolutely a reason for it, it’s not just that a bunch of us on the internet got together and misunderstood how the suspension works and came up with our own procedure. The procedure is in the FSM.