Re: Modify drum brake spindles to fit disc brakes
I've done this modification several times. I found the amount to cut off different on all the spindles. I attached the caliper bracket to the lower mount, snug but not tight and then rotated the bracket up until it touched the upper pivot bolt boss and scribed a line. I used a hacksaw to remove the majority of the boss and a Bridgeport mill to machine them flat. The flats on the backside of the steering arm mounts are plumb to the axle centerline and parallel to the surface of the boss. Oh, BTW, this only pertains to 69 and later spindles. You can modify earlier spindles, it's just a little more work.