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I'm not asking anyone to do a physics problem and determine the amount of force placed upon that shackle you moved, when you hit a bump or take a 65mph hard turn. The kit Motorsports provides looks like it drops into the bushing of the control arm, I was faxed a copy of another one that extends the length of the shackle. You are moving the pivot down (toward the ground), not up.
Here's what I did. I was given the measurements of the hole distances of the kit.
1 degree = 0.510" & 1.5 degree = 0.675"
I needed 1.9' for the left and 2.6' for the right (both corrective figures to achieve -1.0' camber). Using the info provided above and measurements from the the width of the control arm from inner to outer pivots, I used geometry to figure rough estimates.
I used the tangent of the angle initially, but ended up altering it to get more correction. Basically I welded on new tabs to either side of the original brackets and drilled new holes 17.91mm on the left and 22.66mm on right. Drilling the holes were extremely difficult, the hard part is getting the holes on either had to be straight (which I didn't do initially). The end results was a -.3 on left and about -1.0 on right. A little bit more to do, but no time to get perfect yet. When I do correct it to perfect I'll use the slotting method to get it right. Your best bet may be to slot the brackets with 'heavy' washers and have the alignment shop weld them on right after they get it into specs.
P
