Moving axle back 1" with shims and Extreme U-bolt Kit

[Cstrom72]

I am working on my 74 uncut Explorer. I have a WH 3.5" kit I am working on installing with the 6 degree shim and Extreme duty U-bolt Kit. Since I am uncut and running 33's I want the axle back 1" for sure. Other than drilling holes 1" FORWARD of the existing holes on the axle spring perch, 1" forward on the shims and 1" forward on the upper plates is there anything else I need to consider? Thanks

 

[Cstrom72]

I am working on my 74 uncut Explorer. I have a WH 3.5" kit I am working on installing with the 6 degree shim and Extreme duty U-bolt Kit. Since I am uncut and running 33's I want the axle back 1" for sure. Other than drilling holes 1" FORWARD of the existing holes on the axle spring perch, 1" forward on the shims and 1" forward on the upper plates is there anything else I need to consider? Thanks

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[KyleQ]

Ruff Stuff makes these adjustable perches - I've thought about it myself as well..

 

[Cstrom72]

Yea I found those and there are also some zero rate blocks that have offset mounting holes. Id Rather just drill a few holes and be done...

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[sykanr0ng]

Yea I found those and there are also some zero rate blocks that have offset mounting holes. Id Rather just drill a few holes and be done...

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Moving the holes leaves them just a little more than an inch from the end of the perches.
If you have any trouble with axle wrap that will make it worse.

 

[bronconut73]

http://classicbroncos.com/forums/showthread.php?t=275872

 

[garberz]

Moving the holes leaves them just a little more than an inch from the end of the perches.
If you have any trouble with axle wrap that will make it worse.

That's why these are the easiest way to do it right.

Mark

Ruff Stuff makes these adjustable perches - I've thought about it myself as well..

 

[NYLES]

Ruff Stuff makes these adjustable perches - I've thought about it myself as well..

Id do it this way!

 

[Cstrom72]

Id do it this way!

You guys are twisting my arm. Might go home and order them and be done with it haha

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[garberz]

You guys are twisting my arm. Might go home and order them and be done with it haha

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Good to hear you're not gonna be one of those previous owners.

Mark

 

[muskrat]

I used the zero rate kit. Worked well even with the 6 degree shims.

I like the weld on perches, but I don't weld.

 

[muskrat]

If you don't weld, go with the zero rate blocks. Worked well for me including using the 6 degree shims.

For some reason, once I moved the axle housing back the drivers side is perfect. No rubbing front or rear of the fender. The passenger side, no so lucky. It now rubs in the rear under full articulation. 33" with an uncut really shows the lack of precision assembly back in the old days. I even pulled the rear back out thinking I didn't hit the correct hole, but, I did.

 

[Cstrom72]

I really don't want an extra inch of lift in the back though....

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[bronconut73]

I really don't want an extra inch of lift in the back though....

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I didn't either at the time ....

The cool thing about this is it is very easy to go back to stock.

 

[bronconut73]

Having said that /\/\/\....

I would also like to do the extra long spring perches too.

One thing for sure is I am definitely leaving it extended. Moving the axle back gave me clearance and "does" look better...but I really do notice a slightly better/different ride. I am sure it sounds funny but I really can tell...

Muskrat,

I noticed after some careful measuring during this process that my passenger side leaf pack is mounted slightly further towards the rear....like less than an inch,.. but still....might help to explain why the passenger side is a little higher too maybe...haven't crossed that bridge yet.....

 

[blubuckaroo]

What would be wrong with drilling a new hole into each of the existing perches? No welding involved. Just a Uni-Bit.

 

[bronconut73]

That is what I did Blu.

 

[bronconut73]

And you can go back to stock real quick if desired.

Quick unibit in the stock top plate and the stock perch, both 1" forward to push the axle back.

Wish I had done it years ago...

Doing it now with the crazy thick WH top plate was a little harder, but actually easier than I thought. Did it all with a battery drill....and yes I have a drill press...but didn't even need it...so it should be really easy with the thin stock top plate.


You need to do it Blu.

You can always go right back to stock if you don't like it.

 

[KyleQ]

That is what I did Blu.

Drilling the hole further back will just made the axle want to wrap even more - not advisable being that nearly any suspension setup makes the axle wrap.

Those Ruff Stuff perches are super long too, they help with wrap.

 

[blubuckaroo]

And the driveline?
Have you tried dropping the Axle down to full droop?