how often do rear coil springs go bad?

[jayoldschool]

These things are bouncy with no weight in them. That's the price you pay for driving a truck. Throw 500lbs in the back, it will ride great. Mine has old springs, new shocks, good used trailing arms with good bushings. Bouncy when empty, great with a load.

Full dress iron head small block. Delivered it across town, drove great.