When I first did mine I went with the 5" that the AP instructions said and did not like my shackle angle so I changed it to 4 1/2" and my shackle angle is about 15 degrees now. Tack weld them on then set it down on all fours full weight. <IMG SRC="smilies/usa.gif" border="0"> <IMG SRC="smilies/usa.gif" border="0">
also remember that your going to get a minimum of 2-4 inches of settling after breaking in the springs. My bumper measured 32-1/2 at the bottom when the springs were new, and now sits at 29" after 3 months. (i have a snug top shell on the truck, it added 300lbs to the truck, and dropped the springs even further) Make allowances for your shock mounting!! i've got to cut mine off and rework e'm-
Rear Leaf Springs (FROM ALLPROS SITE)
When mounting the rear springs it will be necessary to cut off all 4 rear spring hangers. The front ones can not be reused after they have been removed and two new hangers are included with the kit. These front hangers should be installed 6" forward of the original hangers. Measure from the center of the old hanger eye to the center of the new hanger eye. In the rear the shackle hanger can be cut off with a die grinder. Be careful not to cut into the frame or hanger, only cut the weld between them. Move the hanger back 3" and tack weld in place. We recommend that the spring and shackle hangers be tack welded in place and the truck placed on the ground to verify shackle angle and axle position. If you are installing new springs we recommend you add 300 lbs of weight to the bed of the truck for this test to simulate the spring height that will result after the springs have had a chance to settle. The springs will settle in after your first hard trail run or about one month of regular driving...
so what is it..6 inches like the allpro in stuctions or 4 or 5 inches I have a 85 runner I am putting them on... I figured I would hange a plumb from the bump stop with the old springs on to center of the pin and when I put the new springs up I would center them to that
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