Re: 1972 C30 dually drop spindle install HELP!!
Chevy has two different caliper, one single piston, and one dual piston. They also have two different rotors. Looks like your new spindles are for the bigger brakes. Dual piston calipers with the thicker 1 1/4" rotors. You will most likely need new caliper and rotors that go with those spindles.
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Tony Nicholas @ Midwest Metal Masters
1953 Chevy 3100 392 Hemi w/727 & 9” Ford
1985 Chevy C/10 6.0L 4L80 373 locker
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