Hotchkis leaf springs sagg brand-new

autoxcuda said
The rear shackles are perferred to angle back a little. No matter what leaf springs you have on there. It's ok to have them angled foward. but angled back is perferred. I think that is stated in the Super Stock spring instructions. No sure. But it is stated in the Mopar Peformance Chassis Manual.

The shackle angle has marked effect of leaf spring tuning characteristics. The "preferred" angle of the shackle depends on what you are trying to accomplish with the rear suspension:

The way they are running these shackles from what I have seen posted in this and the related thread is giving the max or near max spring rate. But with the Hotchkiss springs running zero arch, I believe conventional wisdom on this setup might be out the window.