This is topic s-box upper control arm location? in forum Tech Talk at Northern California Ford Owners  .


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Posted by quicksilver91 (Member # 9034) on :
 
I have the wild rides s-box on a 91 fox and im trying to figure out where to mount the upper control arms. There are 3 adjustments for the upper control arms, stock in the middle, raise up and lower. What would the advantages/disadvantages to raising it or lowering it be..?

It has hotchkis upper and lower control arms, tokicko illuminas 5 way adjustable and the red eibock springs, fms aluminum drivshaft.

I feel like the car bounces around alot and if I hit bumps the driveshaft will hit the trans tunnel/e break cables. Any ideas, help, thanks
 
Posted by NEIGHT (Member # 8741) on :
 
I have the same torque boxes. I keep mine on the middle but I'll probably bring move it to drag.
 
Posted by LXjames (Member # 10791) on :
 
Keep it in the middle you'll end up adjusting some shit out of whack if you move it. They probably adjust pinion angle for better performance and what not.
 
Posted by 5.0 LsX (Member # 10017) on :
 
you want to measure the angle of your trans output and rearend flange, your going to want about -2* pinion angle, you might find it to be on the lower mounting...but have to measure to make sure
 
Posted by quicksilver91 (Member # 9034) on :
 
Now when u say move it to drag I guessing u mean lower the uca's.?
 
Posted by dvuspny (Member # 10949) on :
 
Moving your upper control arms up~or~down in these locations does change your pinion angles. This needs to be measured and determined to properly set everything up.
... You need a straight edge or ruler to lay across the diameter of the engine crankshaft pulley. Your angle finder/pinion gauge is then held along side the straight edge surface at the same time. Whatever you find this measurement to be. ......Is what the rear pinion angle needs to be matched to. Stock you will find variance in the pinion angle measurement of the engines. (Usually between 3° & 5°.......manufacturer tolerances)
.....In the rear you will set the same pinion angle gauge on the pinion (flange/mating surface for the driveshaft) to measure what you are actually have and then adjust the pinion angle of the rear differential assembly by simply moving the upper control arms locations either up or down as required to match the crankshaft (engine & transmission) pinion angle.
Hope this helps. [patriot]
 




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