Disc brake conversion, 69 Newport

[TomT90]

As described in the title, I own a 69 Newport, factory power drum car. I have a set of disc spindles for a 73 c body as well as what appears to be an earlier set of spindles that came with calipers and discs. What I am trying to find out is if the calipers I have will work with the 73 spindles ( if I rebuild them of course) and what needs to be done as far as the master cylinder and brake booster to make this conversion happen. I've done some test fitting to determine that the rotors don't interchange but it appears that the calipers and caliper adapters will. Any knowledge would be helpful

 

[Davea Lux]

You will need a '68-early'71 Bendix dual diaphragm brake booster and the corresponding master cylinder. This booster was also used on heavy tow applications and some police applications for the '72 model year. You will also need an adjustable brake proportioning valve to re-balance the brake system. In '73 the factory went to a larger diameter inner bearing on the spindle which is why the rotors are different. '69-'73 used the same calipers and pads.

Dave

 

[TomT90]

You will need a '68-early'71 Bendix dual diaphragm brake booster and the corresponding master cylinder. This booster was also used on heavy tow applications and some police applications for the '72 model year. You will also need an adjustable brake proportioning valve to re-balance the brake system. In '73 the factory went to a larger diameter inner bearing on the spindle which is why the rotors are different. '69-'73 used the same calipers and pads.

Dave

Thanks Dave! Much appreciated!