I think we are all getting a little confused here. The 4" cut-n-turn doesn't add any lift. The 4" cut-n-turn means the camber has been corrected for a 4" lift using the stock axle pivot location.
But then the beam is too short, and you'll be a couple inches narrow on the radius arm mount location in relation to a stock suspension. What you describe needs a 4" drop bracket to be correct, bot the stock pivot bracket.
My 6" springs, 2+" of coil tower cut, 1/2" spring mount shim and my air bags gave me 9"-10" of lift with the stock lower ball joint mount. So, in theory, by using a housing with the camber corrected for 4" lift in the stock hole and moving it to the 6" hole, I should be good for 8"-10" of lift, correct? If the lowering bracket corrects the camber for a 4" or a 6" lift , depending on the hole used, shouldn't the additional 4" of lift be corrected with the camber modified housing?
The air bags have nothing to do with your lift height, if I understand right. They only stiffen the spring rate, meaning the spring doesnt compress as far.
Both drop bracket kits I have had had the 4 and 6" holes exactly above one another. And neither have totally corrected the camber.
My point is you have 8.5" of spring and dropped bucket trying to pivot where a 6" spring would normally be. (Then 2" of spacer!?) Since the C&T didnt move the spring perch lower, you are trying to compress too much spring. See how steep of an angle your beams are at? Either lower the pivot farther or remove spring height.
Put that set of ttb beams on my drop bracket kit in the 4" hole and I bet itd be perfect without the k80108 bushing.
You could maybe simulate a shorter spring by adding the plow weight on the front. That would compress the spring farther, therefore fixing your camber.
If I were going C&T, itd be this style, that is cut and turned inboard of the differential and lengthened to eliminate drop brackets altogether. 6" brackets plus 4" lift c&t beams in this manner would net 10". I just dont see how your style allows any more than 6" of spring on your 6" brackets. Then you dropped the coil bucket 2", so a 4" spring. A 6" spring may not compress enough to allow proper camber?
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