Originally Posted by joe_padavano
Shocks have nothing to do with ride height (unless they are coil over shocks). Assuming the springs are correct for this application, there are two possible issues. First, it is very easy to get the upper end of the spring out of place when installing them. It's a blind installation and I've had the top coil get caught on the centering feature in the upper spring pocket. When this happens, the car sits at least an inch higher than it should. Second, you must torque the control arm bolts with the weight of the car on the springs and the suspension at ride height. If you torque the bolts with the suspension hanging down, the rubber bushings lock in at the wrong orientation and act like additional springs, causing the car to sit too high.
I've seen this exact issue many times. Springs were not seated "in" the perch and hung up on the perch.
The a-arm bolts do need to be retorqued with the weight on them.
Other than those things, make sure the springs were are correct for your application. A-body, year, sbc or bbc, a/c, wagon, hd, etc. When I had to get new coils for my '70 Buick Skylark GS, I had 5-6 different springs that I could choose from.
After the install, it took about two weeks of driving around and the front did settle down some, but certainly not over and inch. More like 1/4" to 1/2", at most.
Maybe you need/want dropped spindles?
Could you post some pictures? How's the back end sit? Low?