You need to determine if it's the front or rear springs causing the issue.63 Chevy II while sitting leans to the drivers side slightly. There is no visual damage to the frame work. Any suggestions on a measuring procedure to determine if the lean is due to the front spring, back leaf spring or something else?
When I got my '63 SS convertible the front springs were worn out, so much so the weight of the battery and a/c compressor caused a slight dip in the right front. New springs brought everything back to level.front & rear springs affect each other... could be a weak rear affecting front & vice-versa.
for a 50yr old car... front & rear springs are more than likely worn out.
Great point!x2 on what others are saying, but just a thought did you rebuild the front suspension or do any work to the front suspension in the air. I would to jack up the car loosen your suspension, lower control arms while the car is in the air, then put the car back on the ground and tighten everything up while the car is on the ground.