You know it took me years to figure out what was going on. I'm pretty sure I had an adjustable snubber when I had the SS springs on. it still wrapped. It wraps then the car moves and the springs snap back so you would get what in the car felt like clutch chatter but it would shake the whole car. It could get so bad the wheels would hop. Now a snubber at 1" from floor keeps it from getting really bad and adding a clamp on the front of the stock springs helped too. The only time it was an issue is when you were letting the clutch out and increasing the power. Won't do it if you took off easy or slipped the clutch a lot with higher rpms. I looked into Caltracts which would definitely take care of it but I didn't like the low ground clearance with them. I still have the SS springs. I even got the front spring brackets that had extra holes to helped compensate for the extra lift of the SS springs. I suppose I could try them again. I thought they wouldn't wrap like the stock springs and was surprised they when they did. Not a lot of HP but always had good traction and 383 has good low end torque combined with a manual trans instead of an automatic that keeps a more constant torque out to the rear end.
