flipping front spring perch on rear spring

[kool patina]

This is all new to me as far as flipping the front rear spring perch on the rear spring assembly....as far as when I set vehicle on jack stands, does the front spring bolt have to be removed or loosened when rotating the perch? When I cut off the factory rivets that hold perch to frame, is there going to be a lot of tension on them if I do not need to remove eye hole spring bolt? After flipping the front perch, is it easier to raise axle with floor jack to reposition perch mounting holes? Any help appreciated!

[sargentrs]

Couple of threads with some examples. 2nd one has a good pinion angle discussion. Last has good pic of locating hanger in a "half flip" scenario.

http://www.fordification.com/forum/view ... p?p=547316
http://www.fordification.com/forum/view ... a&start=30
http://www.fordification.com/forum/view ... p?p=372202