These adapters will allow you to fit the C5 Corvette Caliper using a C4 Corvette 13'' rotor to your car. The key benefit of the disc brake brackets is the fact that you do NOT need to machine down the top boss of your Drum spindle or use washers to make it line up. The C5 disc brake bracket is a simple bolt on with no modifications to the spindle.
The only thing you have to machine down is the outside diameter of the hub to an overall diameter of 6 inches to Accommodate the C4 13'' Corvette Rotor as well as replace the wheel studs. These adapters work on 1967-69 Camaro/Firebird, 1968-74 Nova and will also work on 1964-72 A bodies as well as 1968-74 X bodies.
All edges are chamfered.
No need to modify your original spindles.
The C5 Caliper using the C4 13" rotor
Please note some A-Bodies (mostly BOP body styles) and Some Pontiac F Body cars had a smaller 1/2NF or 9/16NF mounting boss for the Drum wheel cylinder, this will need to be bored and rethreaded to fit the 5/8 hardware that is supplied or you can purchase new spindles.
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