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Old 08-04-2010, 02:48 PM   #1
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SOA and ford 8.8 question - need some advice

I plan to swap the rear end on my YJ with a ford 8.8. To do the swap I will obviously need to relocate the spring perches and shock mounts. It makes no sense to me to go through the trouble of welding new perches on and putting the springs back under the axle as it came from the factory. So, for added ground clearance I would like to put the springs on top of the axle (SOA).
Here's my question.... I have already done a 4" rough country lift with new leaf springs. If I do the SOA with my 4+ springs I'm going to have about 3 more inches of lift in the back and overall more then I need for my 33s most likely. Should I get new springs for the back? (to lower it) Should I get components for the front to raise it a few more inches? (what will I need) Should I do the SOA on the front? Should I shut my cake hole and put the springs and perches back undle the new 8.8 rear end?
You guys are the experts. So, I would greatly appreciate some advice.
Thanks

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Old 08-04-2010, 02:52 PM   #2
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More info if you need it:
I ride wooded trails, play in the mud and on smaller rocks. I am not looking to build a rock crawler. The new axles will have 4:10 gears. I run 33x12.5x15 Pro Comp Xtreme Muds (so far I love them) and I have a 4.0ltr. I plan a SYE an CV axle no matter what dirrection I go with the springs.

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Old 08-04-2010, 03:40 PM   #3
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I prefer a SOA, but If your not doing big rock stick to the spring under. SOA is a lot more than just putting the springs on top.
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Old 08-05-2010, 01:58 AM   #4
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Your right about the spring on top of the axle with the 8.8 conversion You'll have to fabricate new spring seating points right on top of the 8.8 axle tube. I've even added a couple of tabs around the springs to make sure they wont POP out with long articulation.

You'll have an adventure trying to get the E-Brake functioning properly after the 8.8 conversion. There isn't an E-brake solution without some fabrication. After that, you've got a "custom" braking solution that you'd better understand.
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Old 08-05-2010, 02:03 AM   #5
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Oh, and your rear shocks will need to be special ordered (probably) You wont know the final travel/throw shock lengths until after the 8.8 conversion is in place.
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Old 01-27-2013, 07:03 PM   #6
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im looking to do this same thing, because of ride quality from what iv heard(SOA). and iv got my 8.8 ready to go, i was unaware of a difference in shock length from just a ford 8.8 swap.?
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Old 01-27-2013, 08:01 PM   #7
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Hey!

Aactually, the SOA on an 8.8 will net you a little more than 4" of lift, and that would be on top of the 4" springs you have...thats a very tall lift, and a lot more than really needed for 33" tires.....(I've actually ran 37" tires under that kind of lift in the past).

So you definitely need to consider either flatter springs (No lift springs, Wagoneer springs, or Rubicon Express 1.5" SOA springs, for example).

Considering you metioned you do not rockcrawl, IMHO, I would stick with a spring under setup if under your circumstances, with your 4" springs, its ok for 33" tires....gives you a more stable, lower center of gravity, and you have to mess with less custom fabbing for shock mounts, brake lines, e-brake, etc....

Later!
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Old 01-27-2013, 10:30 PM   #8
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Keep the SUA. It works just fine. Little axle wrap, and lets you keep it low.
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Old 01-27-2013, 11:26 PM   #9
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Wrong about the E-brake issue!!!! MORE has a ford to yj e-brake conversion. Basically the exact cables that bolt into place right behind the adjuster. $160... Works perfect.
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Old 01-27-2013, 11:35 PM   #10
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Quote:
Originally Posted by Siffo3012 View Post
Wrong about the E-brake issue!!!! MORE has a ford to yj e-brake conversion. Basically the exact cables that bolt into place right behind the adjuster. $160... Works perfect.
This is so true. Its what I got and its plug and play. Not having to piece together a kit takes the hassle out of the ebrake issue.
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Old 01-28-2013, 03:21 AM   #11
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Originally Posted by Siffo3012 View Post
Wrong about the E-brake issue!!!! MORE has a ford to yj e-brake conversion. Basically the exact cables that bolt into place right behind the adjuster. $160... Works perfect.
ECGS sells as similar setup for like $90. Mine just bolted right up, no fabrication.

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Old 01-28-2013, 06:15 AM   #12
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i wnet from SUA with worn out springs with 2 inches clearence on the rear.....with plus one on shackles...to SOA with new springs and have 12 inches clearence.....still have plus one shackles.. I dont do rocks, i do hunting leases with some decent mudholes. planning on removing +1 shackles, and will have MAjor clearence with probly 35s . i do plan on full size axles with a cummins 3.9 diesel later too. to help offset flipping issues.
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Old 02-28-2013, 01:57 PM   #13
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I'd get the 1.5" soa springs. They're made for it. Spring eyes are flipped. I'd go purchase the right perches. You go with the 4" springs sprung over and you'll be asking for multiple problems. I've done tried it. Perches aren't that expensive. You can get the springs for about $160 a piece.

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