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Should never go forward of vertical...

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Let me apologize for asking such a dumb question, but if you jack the car up like the OP said he did (and I am assuming he didn't jack it up under the diff, sorry if you did), what would prevent the shackle from pointing forward? If I put mine up on jack stands, under the frame in front of the tires, I'm positive my shackles point forward too. Wouldn't the weight of the diff, with tires off the ground, cause the springs to "bow" down, pulling the shackles forward?

I have the same set up as Caper, and am trying to get the most out of my set-up too.

Thanks

gary

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When you jack up the car(frame) both sides of the
spring bow... if you are under acceleration the front
segments are trying to tip up while tipping the rears
down(front is lifting the body but also pushing down
on the diff) and now the rear segments are trying to
pull the body back down but the difference is in the
shackle, its allowing the spring to basically move
forward till its vertical ... remember its trying
to pull pull down... once it gets to vertical its
the spring is just loading it harder... not letting
it go forward