Quote:
Originally Posted by mahanian
That seems to make sense, but if you look at the parts lists in my post above the 63-70 kit comes with both the upper and lower ball joints from the 73-87, but the 71-72 kit only comes with the upper ball joint. This is because the lowers are the same. (71-72 is the same part number as the 73-87 lower balljoint).
This leads me to believe that the 71-72 lower control arm already has the bigger ball joint. Correct
Not sure if that affects the control arm itself, but it would mean you couldn't take a 71-72 stock spindle and bolt it on to a 63-70 lower control arm Correct.without swapping out the ball joint or maybe the whole control arm. Just the ball joints. All 1/2 tons 67-72 arms are the same
If they are 73-87 spindles, is there any difference from a wheel placement standpoint than the 63-70 or 71-72 drop spindles, or is it purely the bore size of the ball joint and tie rod hole that is different? Correct
So the 60-87 spindle is all th same except the hole sizes?
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Correct.
All the conversion spindles will use the 71-87 rotor and caliper, and bearings.
The only exception is the light duty rotors that GM used between 81-87.
They were the 1" wide version,... compared to the 1.25" wide version.