Rear coil spring ?

[norm roll]

on the rear coil springs spring mounting clamps one is threaded and one isn't I
which one is the top clam

[badboy]

if i remember right with out going to look on my truck , i think its the bottom one.
the bolt comes up from the bottom to screw into the threads..the top just goes thru the frame hole..

[chevy_mike]

Originally Posted by badboy

if i remember right with out going to look on my truck , i think its the bottom one.
the bolt comes up from the bottom to screw into the threads..the top just goes thru the frame hole..

This is correct.

[1963c-10]

Yup, bottom is threaded.