Rear disc swap

[TRFanatic]

Hey all,

does anyone know if there are any vehicles that we can do a straight swap of the rear discs onto our cars??

thanks alot,

Ravi

 

[tminer]

None that I have found. I have seen some aftermarket brakets on Ebay that allow Cadilac calipers to be used, and similar brackets with complete kits for other models (early Chevelles, etc).

Tom

 

[Glen]

Try a '79 Caddy Seville or Trans Am w/the WS6 option. They are far and few between. For the price it is hard to beat the Baer setup.

 

[turbofish38]

Caddy and T/A wont be a bolt in. Because of the Direct - Torque type drum brakes the axle mounting flange is unique to the drum brakes only. The axle flanges need to be modified to a conventional 4-bolt style flange. If I remember right there is not enough material to redrill the flange for the 4-bolt caliper brackets.

Eric Fisher

 

[I eat Z06]

Check out Wilwood or Baer Brakes. Both make kits for our cars. Cross drilled and vented is also an option. Oh, and they also make front kits too. I am in the process of saving up for Baer.

Nick

 

[Pat Adkins]

my first tr had disc brakes off of an IROC-Z so it can be done

 

[grkgn]

i heard the the impala ss rear discs bolt right on to our rears not sure thou had a freind of mine that did it but dont know what mods he did

 

[GNVAIR]

Using oem brakes requires either modifying the existing axle flange OR reflanging the rear using the old standard GM 4 bolt flange. Going back to 1964, there are have been 2 sizes of 4 bolt flanges. A small pattern used on most intermediate and smaller passenger cars and a large pattern used on fullsize cars and 1/2 ton fullsize trucks. The G bodies started using a unique flange in 1978 that is tall. It has 2 small 6 or 7mm screws at the bottom and uses the spring anchor to retain the top of the drum brake backing plate.
The 82-92 drum brake F bodies used the same flange. The disc brake F bodies used the older small 4 bolt flange. If you reflange the housing, then you could use oem stuff as long as it has a 4 3/4" stud bolt pattern. The Impala stuff wont work for 3 reasons:
The axle flange which the caliper bracket bolts to is the large pattern, the rotors are for a 5" stud pattern and the axle housing is slightly shorter to allow room for the parking brake assembly which mounts inside the rotor.
Best bet (and probably easiest) is to get a quality Baer racing set up. Jack Cotton is a dealer for them. Baer uses many OEM type pieces which allow you to purchase off the shelf pads and sometimes rotors; unlike Wilwood.