I got the bed off yesterday! So today I drilled out the rivites that held the rear hangers on. Since it is apart and no one seams to have any "real " numbers on hanger placement vs. ride hight and travel. I played musical hanges!!
Here is what I found:
I took all my measurements in the same place. From the top of the axle to the top of the frame. The numbers are taken from ride hight (minus the box) to full droop (axle and tires)I dont know the info on my syspension, I bought the truck this way! So it my be different on a "stock" truck.
Original ride ....................18 1/4"--21" : 2 3/4" down travel
Shackle flipped.................15 3/4"--20 1/4": 4 1/2 " down travel
Flipped and down 1 hole....16 3/4"--21" : 4 1/4" down travel
Flipped and back 1 hole.....15 3/4"--20" : 4 1/4" down travel (was limited by the hanger so reversing the shackle my get more travel)
**by rotating the stock shackle I got 16 3/4"--22" : 5" down travel! So that is a total gain of 2 1/4" of travel!
Conclusion:
Doing a hanger flip will lower your ride hight by 2 1/2"s, Not the 1 1/2" suggested in most threads I read!
By doing a flip you will gain 2 or more inches of down travel from your rear syspension.
When I get my chevy springs I will post more numbers!