1941 Ford springs.

[V8COOPMAN]

Hmmmmmm........It's pretty obvious that your spring is sprung! Seriously, your pictures show the spring to be flat, without any arch remaining in the leaves. The last picture shows the shackles extended outward to the extent that a flat spring can extend. For there to be any "bounce" with your situation, the physics would have to make the spring leaves angle UPward on the ends, and the shackles would have to move in an INboard direction. And with physics being what they are, THAT ain't gonna happen. Your spring needs replacement.......BAD! DD