Bolt-on A/G Body rear disks with c-clip eliminators

[carguykeith]

I just added this to my build thread, but thought I might as well make a thread here in case someone was searching.

I had some issues with a weld-on setup I had originally installed when I couldn't find a bolt-on setup so did some internet searching to come up with another solution. What I found was that almost all bolt-on kits attached from the outer face of the axle flange, the same as c-clip eliminators do. THis causes a problem with the rotor offset not lining up with the caliper due to the added thickness of the eliminators vs. drum brake backing plate.


So what you need is a caliper bracket that bolts on from the rear of the out axle flange, which I finally found. I'm not affiliated with Speedway just a customer and woudl be happy to edit this thread if there are other manufactures of a similiar kit.


Anyways here is the kit:

http://www.speedwaymotors.com/GM-10-and-12-Bolt-Bolt-On-Rear-Disc-Brake-Kit,14015.html (http://<a href="http://www.speedwaymotors.com/GM-10-and-12-Bolt-Bolt-On-Rear-Disc-Brake-Kit,14015.html" target="_blank">http://www.speedwaymotors.com/GM-10-and-12-Bolt-Bolt-On-Rear-Disc-Brake-Kit,14015.html</a>) Oh yeah, I did change to these: http://www.speedwaymotors.com/Wilwood-GM-Iron-Metric-Caliper-2-Inch-Piston,24242.html (http://<a href="http://www.speedwaymotors.com/Wilwood-GM-Iron-Metric-Caliper-2-Inch-Piston,24242.html" target="_blank">http://www.speedwaymotors.com/Wilwood-GM-Iron-Metric-Caliper-2-Inch-Piston,24242.html</a>) Wilwood 2” piston calipers instead of the stock metrics to help balance out the C5 fronts a little better.


Here it is all bolted up:

https://static1.pt-content.com/images/noimg.gif


Of course in my case “bolt-on” still required a plasma cutter, welder, and a 2lb hammer but I’m still pretty happy with the kit overall. Really to be fair the only reason it took all of the extra work is how Strange Engineering builds their c-clip eliminators/ They require the 4-bolts be threaded in from the rear instead of from the front face and the added length of the bolts were just enough that the shock/ lower control arm mounts interfered.

[Tony_SS]

I used the Summit rear disc brake kit for my factory 7.5 rear. It was a true bolt on and even used the factory parking brake. 11" rotors, single piston kit with SSBC stamped calipers.

[NOT A TA]

I just finished one on a 12 bolt 1st gen F body application that bolts to the inside and is clip eliminator compatible. Made by The Right Stuff Detailing and is also available for G bodies. 11" rotors with park brake.

https://static1.pt-content.com/images/pt/2012/08/MVC027F1-1.jpg

[carguykeith]

I just finished one on a 12 bolt 1st gen F body application that bolts to the inside and is clip eliminator compatible. Made by The Right Stuff Detailing and is also available for G bodies. 11" rotors with park brake.

Nice! I was sure there were other mfg's out there I just couldn't find them when I was searching around. Almost looks like the same bracket, I wonder if it is and if so maybe one could just get that and source the rest?

Oh I sould mention they did offer an ebrake kit too I have an auto though and wanted the smaller caliper cylinders so went non-ebrake.

[Skip Fix]

Why not just press on the C clip elim bearing the difference in thickness of the drum backing plate vs the disc backing plate? Then the C lip has the axle in the right place as the bearing locates the axle and the backing plate is where the kit was designed as far as bracket to rotor(axle flange locartes the rotor). C clip elims go outboard of drum backing plates also.

Friend used C clip elims on his drag 79 TA and the factory disc set up and backing plates no problem.

Not a TA that looks like a GM TA/Caddy ratchet caliper with that kit and TA rotors are around 11". An inside bracket might make it a little easier though.

[Tony_SS]

Here is my 100% bolt on solution to brakes for the 7.5 g-body rear..

https://static1.pt-content.com/images/pt/2012/08/0bd-1.jpg

[carguykeith]

Why not just press on the C clip elim bearing the difference in thickness of the drum backing plate vs the disc backing plate? Then the C lip has the axle in the right place as the bearing locates the axle and the backing plate is where the kit was designed as far as bracket to rotor(axle flange locartes the rotor). C clip elims go outboard of drum backing plates also.

Hmmm, that's a really good idea! Just have to make sure you had enough machined surface on the axles to push the eliminator the extra 1/4-3/8" and you still had clearance between the eliminator and the back of the axle flange.

What sort of caliper does the stock rear disk TA use, is it like the old Cadillac style?

[Skip Fix]

Yes they are similar. Use a 2.5' piston,nor sure what the Caddys use, and there is a left and a right for the pull of the E brake cable since they are staggered(driver's in front, pass in the rear) due to the shocks on second Gen F bodies. If you don't want and E brake GM "metric" D154 calipers are the same size. Cast irons are cheap and Wilwood has some single and dual ones now.

[NOT A TA]

Not a TA that looks like a GM TA/Caddy ratchet caliper with that kit and TA rotors are around 11". An inside bracket might make it a little easier though.

Wouldn't surprise me a bit if they were a GM design. Customer supplied them so I wasn't involved in the research for the purchase. I'm building a GN rear for my Malibu this week but it's getting aluminum drums for now, maybe upgrade the rear brakes at a later time.