Whats involved in installing rear wheel disk brakes from a Cadillac?
One option for converting to rear disc brakes is using 76-78 Cadillac El Dorado rear wheel backing plates as the basis to mount the caliper’s. Enlarging the center hole (2.250″ with a 45 degree by 1/16″ chamfer on the back side) and elimination of the dust shield on the backing plate is required, as well as a slight notching of the backing plate to clear the swing arm. The rotor requires locating and drilling three new holes (same size as existing) for the mounting bolts. Additional parts, from Autozone (price does not include tax), you’ll need to change over to rear disc brakes on the rear wheels are: 2 ea Banjo bolt, p/n 313940, $1.99 1 ea Caliper, left front rear axle, p/n 90185, $12.99 + core charge ($17.00) 1 ea right front rear axle, p/n 90184, price same as above 1 ea Caliper, left rear rear axle, p/n 90557, $73.94 + core charge ($70.00) 1 ea right rear rear axle, p/n 90553, $73.94 + core charge ($70.00) caliper bolt p/n H5004 @ $1.79 8 ea mounting bolt, p/n H5002, $3.39 1 ea Br
