Weight has nothing to do with my problem, and I will still have the problem every time I want to lift the car on my 2-post lift once the car is finished. When the car is lifted up from the frame, the rear drops until the shocks/springs are completely unloaded and the rear is hanging from the fully extended shocks....the 4-link allows for this, which is different than when the car still had leaf springs. Leaf springs will only allow for limited sag of the rear axle when the car is lifted...no where near the limit of the shock. I've had steel tubing to take the place of the shocks when mocking things up.
It's perfectly fine to hang the rear end from the shocks. They can take it.
You should not have a free spring when the car is off the ground. . .there should always be a slight bit of preload.
5.2" stroke shocks use either a 10" or 12" spring. If for whatever reason your spring is not preloaded at ride height (make sure the shock is roughly 14.5" from eye-to-eye at ride height) we have 12" springs that can be used, or we have a drop spring cap to take up some slack.
Can you tell me the measurement of the shock at ride height?
How about the spring free length?
How about the spring rate?
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