We offer pre-packaged disc brake conversion kits to convert a drum brake car to disc brakes.  Part #’s vary by application, please see our catalog for specific part #’s.

Standard Disc Brake Conversion kits:

These kits are complete, in that they contain everything necessary to sucessfully install disc brakes onto a car.  Kits are available in either Power or non-Power assist.  Several items to consider:

  • 15″ wheels are usually necessary as the 14″ wheel may not clear the caliper.
  • Pre-67 vehicles will automatically be converted to a dual bowl master cylinder.

Performance Oriented Disc Brake kits

For severe use or racing applications, we also offer upgraded brake packages.  These packages usually DON’T allow for power assist and typically require wheels larger than 15″ in diameter.

General Information

  • Disc brakes become an available option on 1967 model year cars.
  • A dual bowl master cylinder becomes standard equipment in 1967.
  • Disc brake calipers in 1967 & 68 are 4-piston units.  In 1969 they use a 1 piston caliper.

C-Clip / Non-C-clip axle

When ordering a rear disc conversion kit you must know what type of rear axle you have.  GM used several styles of axle retention.  “C” clip axles were primarily found in Chevrolet vehicles.  Non-C clip axles are retained by bearings – and are usually found in Buick/Olds/Pontiac applications.  It is not uncommon for rear ends to be switched, changed or substituted either at the factory, or in the cars past – such that you can’t assume that just because you have a Chevy vehicle, the rear axle is a c-clip style.  Nor can you assume that since you have an Olds Cutlass – that you have a non-C clip type rear end.  You need to check to be sure.


In the mid to late 60′s, GM used different wheels for a disc brake car, vs. a non-disc brake car.  The wheels measured the same, but the inside contour was different.  Toward the later part of the decade, all wheels were patterned after a disc brake wheel, regardless of the brake system the car was getting.  When using a conversion kit, you must have DISC brake wheels if you want to have any chance of using a 14″ original wheel.  If you have a 14″ drum brake wheel – you can conclude this wheel will NOT WORK on a car getting a disc brake conversion.


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