Sounds familiar. I found taking out 2 leaves in the rear helped a little but my 3600 still is pretty stiff in the back. Going to 1/2 ton leaf springs in the front made a huge difference along with radials. It is still far from car like



1950 Chevy 3600


Instagram/Olbluechevytruck
on Classic trucks:
http://rides.classictrucks.com/ride/1085750/olblue/1950/chevrolet/c20/