The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Where to find 71-87 rear disc brake brackets to use Caddy Calipers??

DKN · 05-01-2008, 04:27 PM

The rear rotor is a custom made rotor. You can buy the Impala rotor, but it will not fit. The lug pattern that comes in the kits is either a 5 lug truck, or 6 lug truck. The pilot hole in the rotor is correct for either 5 lug truck, or 6 lug truck. The hat size on the Impala rotor will not match either so the brackets will not be spaced correctly for the caliper to fit over the rotor. Also the rotor diameter needs to be exactly the same size as the rotors in the kit. If the rotor diameter is larger then the guide pins will rub the rotor, and if it is smaller then the pads will hang over the edge. You will also need to change to a longer wheel stud since the rotor is thicker than a drum and you loose thread engagement on the lug nut.

The kits bolt on, include the wheel studs, the hard lines and hoses on the rear axle, a new master cylinder and proportioning valve, new diff gaskets, new parking brake cables, new rotors, and NEW calipers and pads.

Remanufactured calipers and pads from the parts store will cost you close to $300 by themselves. The kits are really priced as a good deal. We do sell just the brackets. They are not listed separate because you still need to buy a lot more parts before you can build a rear brake kit. Besides, most people who buy just the brackets end up spending more than if they would have bought a complete kit from the beginning.

Danny Nix
CPP

05-01-2008, 04:27 PM	#2
DKN Active Member Join Date: Feb 2008 Location: Los Angles CA Posts: 136	Re: Where to find 71-87 rear disc brake brackets to use Caddy Calipers?? The rear rotor is a custom made rotor. You can buy the Impala rotor, but it will not fit. The lug pattern that comes in the kits is either a 5 lug truck, or 6 lug truck. The pilot hole in the rotor is correct for either 5 lug truck, or 6 lug truck. The hat size on the Impala rotor will not match either so the brackets will not be spaced correctly for the caliper to fit over the rotor. Also the rotor diameter needs to be exactly the same size as the rotors in the kit. If the rotor diameter is larger then the guide pins will rub the rotor, and if it is smaller then the pads will hang over the edge. You will also need to change to a longer wheel stud since the rotor is thicker than a drum and you loose thread engagement on the lug nut. The kits bolt on, include the wheel studs, the hard lines and hoses on the rear axle, a new master cylinder and proportioning valve, new diff gaskets, new parking brake cables, new rotors, and NEW calipers and pads. Remanufactured calipers and pads from the parts store will cost you close to $300 by themselves. The kits are really priced as a good deal. We do sell just the brackets. They are not listed separate because you still need to buy a lot more parts before you can build a rear brake kit. Besides, most people who buy just the brackets end up spending more than if they would have bought a complete kit from the beginning. Danny Nix CPP