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Ford 8.8 soa perch question

1K views 3 replies 4 participants last post by  WOKNROX 
#1 ·
So I'm getting everything ready to do a soa lift with ford 8.8 rear...this maybe a stupid question but when welding on the new perches how do I figure out what angle to weld them on to help with drive shafts angle..
 
#2 ·
You assemble the leafs, put the perch between the axle and the leafs, lift the axle and let the weight of the Jeep be on the leafs. Then rotate the pinion till you are happy with the pinion angle. Tack weld them on the tube. Finish the weld in after you put everything else together and have the actual street weight on the leafs.
 
#3 ·
if i may add a little foresight, depending on the spring height and the use of a traction bar and what type of spring u should retard the angle..

for example.. i ran Old Man Emu 2.5" lifted springs they didn't sag much but after they settled i noticed my pinion angle was off by a few degrees..

i later cut the perches and re-welded them at a better angle.. wish i had known from the start
 
#4 ·
When buying you purches. .get them with 3 holes not the ones with only one hole...this way you can stretch the wheelbase a little. You'll also want the ones that are 7" long or more. Ruff Stuff sells the one's you need and gives discounts to people on this forum.
When trying to find your angle put it all together like posted earlier with the springs you are going to use. With the weight of the vehicle on the axles use a floor jack to lift the axle pinion while using a dial angle finder you will want to set it at 5° to 8° below the "straight line" of the transfer case..
 
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