Check out the suspension forum on this board
http://67-72chevytrucks.com/vboard/f...splay.php?f=25
You're doing right by asking first.
If this is done incorrectly it can be dangerous.
Here's an old post about front springs on my 69, has some good points about spring removal
http://67-72chevytrucks.com/vboard/s...d.php?t=263423
I just jacked the frame off the axle and unbolted the spring but I'm sure others will chime in