Help with preload for a ladder bar/coil over car

[Chevy55]

https://www.amazon.com/COMP-Cams-158.../dp/B000CIQ7UM

[GTX JOHN]

Does it go left or right off line?

This suspension always is a struggle for me for as simple a deal
that it is!

[CMcAllister]

Originally Posted by Chevy55

https://www.amazon.com/COMP-Cams-158.../dp/B000CIQ7UM

Not a bad read, a bit scholarly and maybe a bit dated as opinions, techniques and hardware has changed over time, even though the physics don't change. Also available for a more reasonable price from some other places. S&W for one, maybe others.

When chasing a problem and/or something has changed in the car, first look at the parts. How old are the shocks and springs, tires, rod ends. I've seen guys with cheap 10 year old SA shocks, beat up and leaking, dead springs and/or a bent housing, complaining that they can't adjust an issue out of the car. Verify the condition of the parts and pieces and/or update accordingly. This should be part of the regular schedule.

Weigh the car, 4 corners. Know where the weight is and what the preload (or lack of it) is. Keep track of it. If it moves around a bunch, something has worn out or bent. Good DA shocks are a necessity on a ladder bar car with decent power.

There are different ways to adjust the weights beside preload, but I would verify and baseline everything, then let the car tell you what it wants from there. Video and playback (30 fps min.) is valuable as well.