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#626249 - 11/29/08 12:36 AM C5 rear disc project  
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JJMonteSS Offline
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JJMonteSS  Offline
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Detroit, MI
Well, I've decided it's time for a brake upgrade since my new motor will be making nearly 500 horsepower. I got a great deal on some C5 Zo6 calipers and worked with Ed from www.flynbye.com for the rear brackets that do not require any cutting or drilling to convert to rear disc.

It is a very easy upgrade...as long as everything unbolts. My first obstacle was when I went to remove the axles to install the brackets--my rear center pin bolt broke off inside the differential. After breaking 13 drill bits and 2 extractor kits, I had to pull the rearend out and extract the pin with brute force. I just got my rear axle assembly back from the ring & pinion shop to inspect for damages...luckily my axle was in OK shape and I only lost $200 because of a lousy $2.47 bolt broke.

I just finished test fitting the brackets, calipers, and rotors and everything looks great. I've decided to mount the calipers in the forward position because the shock was very close to the caliper in the rearward position. I'm not running an e-brake, so this setup will work fine for me.

It's actually a good thing that I pulled the axle because I'm upgrading to all new stainless rear brake line and with no axle in the way, getting at, and installing the lines will be easier.

After the rear is done, I'm going with the C5 front hybrid brake setup that will fit inside my 17" wheels using 12-inch rotors. So far, I've purchased the SC&C stage 2 setup and got my lower arms sandblasted. I've installed the tall ball joints and energy suspension bushings.

Winter is just beginning and I'm well on my way with projects! I'll keep everyone posted!!










'85 SS ZZ383, Extreme Automatics 2004r, 8.5 rear w/3.73 & Z06 brakes, Harwood hood, & Torque Thrust II 17's.
#626269 - 11/29/08 01:53 AM Re: C5 rear disc project [Re: JJMonteSS]  
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kubihibi Offline
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Kingsland, GA
I am very jealous



Oh SNAP! I'm a Vet! Stuff for Sale
#626277 - 11/29/08 02:49 AM Re: C5 rear disc project [Re: kubihibi]  
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Duts87SS Offline
15+ Year
Duts87SS  Offline
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Spanish Fort, AL USA
I just bought some LT1 rear calipers. With Ed's brackets, I hope my swap goes as smoothly as yours seems to have gone (minus the broken bolts).

I'll put the new brakes on the 8.5 I have waiting to go in.


Dustin
87 SS
[Linked Image]
#626280 - 11/29/08 03:06 AM Re: C5 rear disc project [Re: Duts87SS]  
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345HP87SSAC Offline
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345HP87SSAC  Offline
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Stanberry, MO
Is that Ed Miller?

If yes I bought my C5 front stuff from him several years ago. I have been very happy.


[Linked Image]
New BTR Stage 4 cam makes 449 HP and 380 TQ TQ at the wheels. 6.0 LY6 VVT and 4L85E!blackgoldaero http://www.cardomain.com/ride/671193
#626327 - 11/29/08 12:19 PM Re: C5 rear disc project [Re: 345HP87SSAC]  
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JJMonteSS Offline
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JJMonteSS  Offline
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Detroit, MI
Yes, Ed Miller is the fabricator of the brackets.



'85 SS ZZ383, Extreme Automatics 2004r, 8.5 rear w/3.73 & Z06 brakes, Harwood hood, & Torque Thrust II 17's.
#626356 - 11/29/08 04:11 PM Re: C5 rear disc project [Re: JJMonteSS]  
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DetroitSS Offline
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Detroit Michigan
Hello,See your from Detroit as well.What Ring and Pinion shop did you use?I'm in the process of setting up an 8.5 for my Black 87 right now.Randall.

#626360 - 11/29/08 04:22 PM Re: C5 rear disc project [Re: DetroitSS]  
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JJMonteSS Offline
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Detroit, MI
Ring And Pinion Shop
36180 Groesbeck Hwy
Clinton Township, MI 48035
586-792-2560

They are located between 15 and 16 Mile roads. Great guys, I've been going there for over 15 years and have never had any problems with their work.



'85 SS ZZ383, Extreme Automatics 2004r, 8.5 rear w/3.73 & Z06 brakes, Harwood hood, & Torque Thrust II 17's.
#626473 - 11/30/08 12:21 AM Re: C5 rear disc project [Re: JJMonteSS]  
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DetroitSS Offline
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Detroit Michigan
Thanks,I'll check them out.Randall.

#626529 - 11/30/08 04:27 AM Re: C5 rear disc project [Re: DetroitSS]  
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whitess Offline
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Frederick, CO
You're gonna love that Stage 2 kit. Add a 1" rear bar (less understeer) and Mark's front frame brace(better steering response) and I think you'll like it even more.
What are you doing about the proportioning valve setup?
Let us know how the rear brake kit works out.
Larry.

#626802 - 12/01/08 02:21 AM Re: C5 rear disc project [Re: whitess]  
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JJMonteSS Offline
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JJMonteSS  Offline
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Detroit, MI
Thanks Larry! I can't wait to get the front suspension all done. I'm already running a Hotchkis 1" rear bar--but that's a good idea about the front frame brace.

For a proportioning valve, I'm going to get a disc/disc combination valve to replace the stock disc/drum one. The company Inline Tube is near my house and they make stainless brake lines and the correct combination valve for rear disc conversions. I'd like to try and keep everything OEM style...which makes fixing problems in the future much easier.

Jason



'85 SS ZZ383, Extreme Automatics 2004r, 8.5 rear w/3.73 & Z06 brakes, Harwood hood, & Torque Thrust II 17's.
#626880 - 12/01/08 12:59 PM Re: C5 rear disc project [Re: JJMonteSS]  
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SickSpeedMonte Offline
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SickSpeedMonte  Offline
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MD
Very nice setup, I wasnt aware that there was a bolt-on kit for the rear. I'll definately be considering this after I get my front kit installed.

Without taking the thread too far off topic, why did you go with the 12" rotor on the C5 fronts? I have read that if you grind down the convection fins on the calipers, you can run the 13" rotors with 17" aftermarket wheels. I have American Racing wheels (which im sure have the same exact rim as the TTII's) and I just want to be sure that I can make it all work safely.

#626956 - 12/01/08 07:32 PM Re: C5 rear disc project [Re: SickSpeedMonte]  
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whitess Offline
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whitess  Offline
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Frederick, CO
Jason,
I also did a frame brace for the rear, I can tell some difference. Hearing 15 Mile and 16 Mile brings back memories,
I was born in Dearborn.
Larry.


85 SS
#626980 - 12/01/08 09:29 PM Re: C5 rear disc project [Re: whitess]  
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JJMonteSS Offline
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Detroit, MI
I know that I could grind down the C5 calipers to fit behind the wheels. I spoke to a few people that have done it and they ended up removing material on the wheels as well...I just don't want to kill the finish on some perfectly good Z06, factory red powdercoated calipers. The major benefit of a 13 inch rotor over a 12 inch one is heat dissipation--for what I'm doing, just street driving, no auto-crossing, I think I'll be fine. In fact, I've been happy with the stock 10.5" rotors...they just look tiny behind 17" wheels. I'm sure I'll get different wheels in the future that will allow 13" or 14" rotors & it'll be an easy upgrade then.



'85 SS ZZ383, Extreme Automatics 2004r, 8.5 rear w/3.73 & Z06 brakes, Harwood hood, & Torque Thrust II 17's.
#627114 - 12/02/08 02:03 AM Re: C5 rear disc project [Re: JJMonteSS]  
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mrengineer Offline
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mrengineer  Offline
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The D, MI
I had to grind a couple of the outer most cooling fins off of my C5 calipers to get everything right. This winter I am upgrading to the C6 calipers, we'll see how those fit.

As far as your wheels I would not remove any material whatsoever. I am running Impala SS wheels and have had no problems for the past 3 years. The material off the fins is minimal....


Mr. Engineer
#627503 - 12/03/08 04:46 PM Re: C5 rear disc project [Re: mrengineer]  
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Bri Offline
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Bri  Offline
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Macungie, PA
JJMontesSS,

Iím looking over the posts & have looked at the flynbye site & honestly have to say a little confused as to what I would more than likely need to convert the drums to discs on my 87í Aerocoupe.

This is what I have in the grey matter right now. I know Iíd need at least the backing plate one way or the other. The other components seem more or less off the shelf? Iíd like to take the project on but really donít want to spend a considerable amount. I see some of these kits & I realize some are for the folks out there who are more into pushing the cars to max! Iím looking for better performance than the stock drums. Iím figuring someone must have the part numbers for the pieces which would essentially mount onto the purchased flange?

Also, doesnít the proportioning valve get changed also?

Thanks a bunch for your time & hope everyoneís getting the tools ready for the winter working on the cars!

#627519 - 12/03/08 06:21 PM Re: C5 rear disc project [Re: Bri]  
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JJMonteSS Offline
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JJMonteSS  Offline
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Detroit, MI
Well, I'm still putting together my system and figuring out what is needed to complete this conversion. I'm working on the proportioning valve right now. A few companies offer a disc/disc valve, but some people that have done the conversion recommend an adjustable prop valve instead.

In a nutshell, you basically need backing plates, the caliper/rotor setup, flexable lines, and a proportioning valve.

As with everything, be ready for hidden costs like new brake hard lines and costs for modifying parts. I just had to have my axles turned down .050 to fit inside the C5 rotor hat.

You really don't want to run rear disc without upgrading the fronts too. If you're after better braking, your best bet is to upgrade the front first, then do the rear.

I'm doing both the front and rear this winter. It's crazy how the little parts add up to a bunch of money. After all is said and done, I'll have nearly $2,000 in my brake upgrade, and that's doing it very cheap (I got brand new calipers for $50 which started this whole ordeal) It's sad to think that I can buy a late model Camaro Z28 for around $5,000 and already have great brakes and fuel injection. But, that's how this hobby is, don't expect to get back what you put into your classic car.

Hope this helps,
Jason



'85 SS ZZ383, Extreme Automatics 2004r, 8.5 rear w/3.73 & Z06 brakes, Harwood hood, & Torque Thrust II 17's.
#627522 - 12/03/08 06:31 PM Re: C5 rear disc project [Re: JJMonteSS]  
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SS Ninja Offline
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SS Ninja  Offline
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Stoughton, MA
Good looking SC&C setup! I hope you enjoy it! smile


1987 Monte Carlo SS: The toy
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#627587 - 12/03/08 11:43 PM Re: C5 rear disc project [Re: SS Ninja]  
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84supersport Offline
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Louisville, KY
Wow. Two grand? Is that just for the brakes or for the SC&C and all too?


84 Monte SS stolen September 2012. 077 DFE Jefferson County KY plate. $2500 reward. Vortec headed 350ci, th350, 3:73 limited slip cast aluminum cover, Autometer gauges, Pro-Stick, 2.5" fiberglass hood.



Matt
#627617 - 12/04/08 12:50 AM Re: C5 rear disc project [Re: 84supersport]  
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JJMonteSS Offline
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JJMonteSS  Offline
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Detroit, MI
That would be the total for front and rear brake assemblies, new control arms, new stainless brake lines & proportioning valve, and the unexpected things that pop up along the way.

I know it can be done on the cheap, but I try to do things right the first time and not be cheap--especially when it comes to brakes.



'85 SS ZZ383, Extreme Automatics 2004r, 8.5 rear w/3.73 & Z06 brakes, Harwood hood, & Torque Thrust II 17's.
#627703 - 12/04/08 04:18 AM Re: C5 rear disc project [Re: JJMonteSS]  
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84supersport Offline
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Louisville, KY
So, minus the control arms and the SC&C kit how much you think you got in it? I was going to do the same thing with all new lines and parts but I didnt think the parts would be that much.


84 Monte SS stolen September 2012. 077 DFE Jefferson County KY plate. $2500 reward. Vortec headed 350ci, th350, 3:73 limited slip cast aluminum cover, Autometer gauges, Pro-Stick, 2.5" fiberglass hood.



Matt
#627742 - 12/04/08 01:27 PM Re: C5 rear disc project [Re: 84supersport]  
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Imlay City, MI
Originally Posted By: 84supersport
but I didnt think the parts would be that much.


That much, youíre kidding right? Sure you could go to your local Napa and maybe retrofit some mustang rotors on the car. Not tring to be mean but you don't go cheap on brakes and if anything the cost he stated is very reasonable for what he is doing. Rear disk brake conversion as well as upgrading the fronts to a larger rotor and he is using corvette parts (we all know that anything off a Corvette is of the highest quality!) Plus stainless lines and performance control arms. Doing that upgrade I would have expected his cost to be a lot more ($4000 or $5000). Great Job Jason, you did it right and for a great deal! I bet the Red zo6 Calipers are going to look great with the black car, pics please when done!


Bradley
#627759 - 12/04/08 03:26 PM Re: C5 rear disc project [Re: bradleyls103]  
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JJMonteSS Offline
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Detroit, MI
Thanks Bradley! Yeah, a nice paint job will run you $5,000-$10,000 so there is no reason to skimp on brakes.

Asking about prices in this forum is usually pretty touchy...there are members that have cars ranging from $500 daily drivers to $100,000 pro-touring g-machines.

I've had my car for nearly 15 years, when I was a teenager, I may have gone with the NAPA brand...but now I can take my time and do things the right way.



'85 SS ZZ383, Extreme Automatics 2004r, 8.5 rear w/3.73 & Z06 brakes, Harwood hood, & Torque Thrust II 17's.
#627835 - 12/04/08 09:46 PM Re: C5 rear disc project [Re: JJMonteSS]  
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84supersport Offline
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I dont know man. I wouldnt think rotors would be more than $100-125 and the same for calipers. The brackets were only like $100 a pair. Hell, the Baer kits I thought were only a grand or so more for the full front/rear setup. I could be wrong though. I never said anything about buying the cheapest parts possible. Yeah, this forum is very touchy anymore. I think theres too many members going through male menopause anymore on here. I havent ever went and bought the cheapest parts possible but i've spent the bucks in the right places. All i'm asking, was that figure including the SC&C kit and the control arms because I know the SC&C kit isnt cheap. I've never looked to see how much a complete set of stainless lines are either.


84 Monte SS stolen September 2012. 077 DFE Jefferson County KY plate. $2500 reward. Vortec headed 350ci, th350, 3:73 limited slip cast aluminum cover, Autometer gauges, Pro-Stick, 2.5" fiberglass hood.



Matt
#627859 - 12/05/08 12:07 AM Re: C5 rear disc project [Re: 84supersport]  
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JJMonteSS Offline
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Detroit, MI
If you go to www.kore3.com you can get a complete rear C5 setup for under $500 if you don't need to run a parking brake setup. Stainless lines and a prop valve will set you back a few hundred. However, you can't run 12" rear brakes with the stock 10.5" fronts--so you'll have to upgrade the fronts as well.



'85 SS ZZ383, Extreme Automatics 2004r, 8.5 rear w/3.73 & Z06 brakes, Harwood hood, & Torque Thrust II 17's.
#627891 - 12/05/08 01:53 AM Re: C5 rear disc project [Re: JJMonteSS]  
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84supersport Offline
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Yeah, I know. The front does something like 80% of the work. Rear discs really only help with heat and make the pads last longer through daily driving. So thats what I read. Was the Vette parts really that expensive? Maybe the Camaro parts would work too and be less expensive. I thought they were the same anyway. Just smaller discs. An di'd want the parking brake because eventually I want to go with a LSX and a stick.


84 Monte SS stolen September 2012. 077 DFE Jefferson County KY plate. $2500 reward. Vortec headed 350ci, th350, 3:73 limited slip cast aluminum cover, Autometer gauges, Pro-Stick, 2.5" fiberglass hood.



Matt
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