Front end rebuild 1972 Duster
I used these washers….
My best guess is that these are 3/32”.
You can see them peeking out from between the knuckle and lower ball joint.
Here is what difference they made.
These alone made a 1/2 degree of negative camber to arrive at 3/4 degree, not a bad number. The caster reading is obtained on the right by turning the wheel to the right by 20 degrees.
Twenty degrees is the angle at the end of the gauge.
You simply turn the wheel until the angled edge is parallel with the side of the car. Get as close to that angle as you can, then ZERO the CASTER bubble by turning the knob on the middle gauge.
Once the gauge is zeroed, turn the wheel to the left until the angle on the edge of the other side of the gauge lines up parallel the the car. That is 20 degrees off center for a total sweep of 40 degrees from when you zeroed the gauge. This was my number.
That is approximately 5 3/8 degrees of caster. That is pretty dang good. With this, I can dial back the left side to match the right. I had to do similar things to my red Charger to obtain equal numbers.