Quote:
Originally Posted by 68droptop
Great! I hate to be a pest, but could you give me a quick answer on the second question about re-drilling the spindles? Thanks
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Sorry, I missed that one.
The factory spindles have three bolts that hold the drum backing plate in place. The two bottom ones are through-holes with a bolt and nut that also hold the steering arm to the spindle. The top bolt threads into a tapped hole in the spindle and (if I recall) holds the bracket that retains the pistons in the brake cylinder.
Unbolt these three fasteners and the drum backing plate comes off the spindle. The two bottom holes are unchanged for the disc configuration, but the top threaded hole needs to be enlarged and tapped for a larger bolt. I don't have the thread specs here at work, unfortunately. When you reassemble the spindle, the disc brake splash shield is held on with all three bolts. The steering arm uses the bottom two, and the caliper bracket uses the top one and one of the bottom two, depending on which side of the car it's on (the spindles are the same, just the bolt-on arms and caliper brackets are RH and LH). The through bolts that hold the steering arms should be long enough to also hold the caliper bracket.