Alignment ?

[70GMCer]

I just got my 70 back from the alignment shop & have a question before calling them back. The truck drives straight & doesn't pull when braking. The problem, (if it is one), is it that when I make a sharp turn left, the left front tire squeals on hard pavement & I can feel the left front end kinda sloping downward & pushing. When I turn into my gravel driveway, the left front digs/plows into the gravel as I am moving. The right side doesn't do this.

Now the mechanic that did the job, told me the alignment turn out perfect, but to drive it a couple weeks and bring it back for a recheck. That kinda sent a flag up. I didn't ask why, but he said he was getting in a new Alignment Machine in and wanted to recheck it.

I was going to call him this coming Monday to ask him about this, but wanted to get some feedback here first. I did notice that before I took the truck to him, there were about 4 shims on each side of both upper control arms. That many shims had been there before I did the disk swap. Now, there is only 2 shims on one side of the adjustment bar on the control arm.

Did I mention I just finished converting to disk brakes. I use 84 burb spindles with new outer tie rods, 71 1/2T lower control arms w/84 new lower ball joints & 84 burb upper control arms, 71 1/2T inner tie rods & center drag link. Could me using the 84 upper control arms, be causing the problem, or should I use the 71 1/2T upper arms? All parts fit perfect.

Again, keep in mine that the truck drives straight and doesn't drift from side to side, and brakes perfect. I just don't think that the left tire should be squealing, and I don't want to start a bad tire pattern on new tires.

opinions/advice?