87350IROC

iTrader: (2)

Hi guys I am working on a 2009+ CTS-V brake upgrade for my Camaro. GM brake swaps are popular around here and these are about as nasty as they get. These things work well on a 4200lb CTS-V with 200hp more than my car. I should be good to go.

Fronts are 6 piston monoblock Brembos on 14.66" rotors. Calipers are over 13" long, and have the biggest pads I have ever seen.

Rears are 4 piston Brembos on 14.50" rotors. Calipers are about as big as my current front Wilwoods. These are about 90% the same as 2010+ Camaro rear brakes. Except they put the caliper on the front of the rotor instead of the rear.

The beauty of this setup is they bolt on the same as 2010+ SS Camaro brakes. So brackets are available. Price is expensive as far as GM swaps go, about about half the price of a comparable aftermarket kit.

I had the calipers powdercoated in a dark charcoal metallic with a silver Brembo logo. Rotors are OEM CTS-V except I had an ALMS team slot them for me. Pads are Hawks HPS. They will be going on in the next month or so.

Front




Rear


Rotors


Full kit


Quick mockup in wheels.

1bdbrd

iTrader: (1)

What are your rear calipers off of? Are they the 09+ ctsv rears? Do you think the front setup would fit an 18" wheel?

87350IROC

iTrader: (2)

They are 2009+ CTS-V calipers all around.

GMHTP managed to fit these inside an 18" wheel by using a 14" Z06 rotor rather than the 14.66" CTS-V rotor. Not sure if the 14.66" rotor would fit. But I will try it as some point.

http://www.gmhightechperformance.com...s/viewall.html

Dakota W.

How many tries did standing the rotor up take you? lol

//<86TA>\\

iTrader: (14)

Those are going to be sweet. They will fill out those 19's better than the old wilwoods.

banksGTA

iTrader: (3)

what does one side of the front weigh? Thanks

1bdbrd

iTrader: (1)

Are you going to do anything for mounting the rear calipers aside from just the adapter bracket? I would assume these would have the same pad knock issues the older cts-v rear calipers do when mounted to our cars?

Also, what about a parking brake? What do you have in store for that?

87350IROC

iTrader: (2)

2009+ CTS-V Brembos
Caliper - 8lbs
Pads - 4lbs
Rotor - 24lbs

In comparison to my current Wilwood kit.
Caliper - 4.5lbs (Wilwood claim, I have not measured them myself)
Pads - 2.5lbs
Rotor - 21lbs

87350IROC

iTrader: (2)

Pad knock back should be caused mostly by the c-clip differentials used by most. I will be running a Dana 44 with bolt in axles. I would not use a c-clip axle with a fixed calipers. 9 bolt or D44 are a better choice.

Regarding the e-brake. I am currently evaluating my options. I am hoping to use the factory CTS-V e-brake, but there are challenges. If that doesn't work out I plan to use a spot calipers like the link below.

http://www.ipsco.org/Custom%20Servic...ng%20Brake.htm

1ADan

iTrader: (4)

stopped drooling on my keyboard just long enough to type this post. beautiful setup.

91 1LE

iTrader: (1)

I thought the '09 and up CTS-V's used an electronic ebrake. When the button is pressed the ABS system builds and holds pressure to the rear calipers. No cables, only wires and programming.

87350IROC

iTrader: (2)

Nope it is a normal cable pulled drum style e-brake. I will be ordering some parts today.

91 1LE

iTrader: (1)

Electric Parking Brake

87350IROC

iTrader: (2)

It actually does have cables. They are pulled by a motor instead of your hand. I will be using the OEM third gen e-brake handle to pull my e-brake. Other than the motor its a conventional design.

Twin_Turbo

iTrader: (25)

Can you tell me the rotor width? Love the slots on yours, the stockers look a little bland, being that huge with a solid face. Could you do rotors for other people like that???

87350IROC

iTrader: (2)

The rotors are off at the machine shop right now getting the center bore enlarged to our size (70.3mm IIRC). These came as 67mm. I will measure them when I get them back this week. But they are advertised as 370x34mm. Rears are advertised as 365x28mm. If you are looking for overall height, that will have to wait until I get them back from the machine shop.

The slotting was done by an ALMS / Indy / Nascar team in Indiana. I can't say which team, but its one of the big boys. I purchased them through Bruce at Raymond's Performance. Good guy to deal with and he has all the connections with the race team.

http://www.raymondsperformance.com/contact.aspx

I will post up some specs and pictures of the rear rotors later.

John

87350IROC

iTrader: (2)

Part Numbers:

Front
25912477 - caliper
25912967 - caliper
25940447 - pads
25940448 - x2 caliper pin kit
1771105 - x2 rotor

Rear
25911138 - caliper
25911233 - caliper
89047744 - pads
1771051 - x2 rotor

E-brake
25851190 - backing plate
25851205 - backing plate
25693149 - cable bracket
25693150 - cable bracket
25814678 - shoe kit
25867413 - x2, shoe lever arm
25867414 - x2, shoe leveler
20823795 - cable
20823866 - cable equalizer
18K2087 - spring kit
Raybestos H7363 - hardware kit

iansane

iTrader: (1)

I have major brake envy. I've been eyeing this setup for awhile now...

Gumby

^ giant multi piston calipers are close to coming to an end, its run its course, next evloution will be 2-3, 2-4 piston calipers per wheel spaced out, plumbed for progressive stopping power as needed.

scholtmj

iTrader: (3)

Really?

BADNBLK

iTrader: (11)

Me tooo!!! I'm sure you can unload your calipers easy enough.

iansane

iTrader: (1)

Probably, but I just dumped a bunch of money into my other car's bbk. I think I should put brakes on hold for awhile.

Ala Merc AMG stuff? Hrm. Weird. I figured fixed solid calipers would still be the big dogs. Motorsports like F1, BTCC, NASCAR, AussieV8s aren't running multi calipers are they? My mindset with that train of thought is that technology and "bling" trickles down from the racing divisions.

TPI TERR

iTrader: (9)

Beautiful brakes .!!
I was considering a rear set to go with my v1s, with time of course .

Keep us updated let us know what rear brackets you use.

87350IROC

iTrader: (2)

Thanks.

Rear brackets are the most interesting part since they need to play nicely with the e-brake. We shall see.

iansane

iTrader: (1)

Do you already have all the ebrake stuff? Is it three bolt mounting like the 'vette? Maybe c5/c6 brackets could be close?

87350IROC

iTrader: (2)

I do not have them yet. But it is 3 bolt like the new Camaros and Vettes. I should look into the C5 brackets. Thanks for the good idea.

There is a picture attached above that shows most of the assembly.

87350IROC

iTrader: (2)

Looks like Ed's brackets will not work for me. The V stuff does not interchange with the C5.

Got my front rotor hub holes enlarged and was finally able to mock up the brakes in the wheel. Brakes fit well. You could squeeze these into an 18, and it would look awesome. I have about 3/4" of clearance between the face of the caliper to the spokes. More than I would like but inevitable due to how big the wheel back pad had to be to clear the front spindle.

Lots of pictures:

iansane

iTrader: (1)

You think I could stop by sometime with my c6 18" wheel and see if it'd fit inside?

Is the V ebrake stuff different bolt pattern completely or is it clearance issues?

Oh and I love the duct tape sandal.

87350IROC

iTrader: (2)

No problem man, I will be home all weekend. Send me a PM if you are interested.

The 3 bolt pattern on the flange seems to be the same. But the caliper radial offset is different and the e-brake backing flange requires a different offset. I'm going to run something similar to Ed's C5 setup but will be customized to fit the V parts.

87350IROC

iTrader: (2)

And here are the rears. Unfortunately the rear calipers are thicker than I was told. So I have interference with the caliper face and the back of the spokes. I haven't played with it much, but I think 1/4" will be more than enough. Shouldn't be to bad.

lunati397

thats what im going with

lunati397

and I believe the have already built a rotor stator brake for a car where is a full rotor to two full size brake pads with 12 pistons all the way around

Disc brakes and ABS were invented on planes first so its just time now

and acft like a F16 has 6 piston 3 rotor 3 stator carbon brakes

87350IROC

iTrader: (2)

Started working on the front brackets. These calipers have very long mounting lugs which means the bolt holes are very close to the existing bolt holes in the spindle. To get them to sit nice, the lower caliper bolt needs to sit right where the steering stop currently is. Then the caliper bolts sit right below the spindle bolts. It will be an exercise in tight fitment. However if I get it right, I think they should look good and won't hang as low as Ed's brackets for 1st gen CTS-V.

Ed's brackets.

iansane

iTrader: (1)

Aren't those brackets for the c6 Z51 rotors, not the 14" zo6 ones? (That's Dewey's picture, right?) AFAIK, you can bolt the gen1 ctsv stuff on with LS1 brackets + zo6 rotors.

87350IROC

iTrader: (2)

It does look like the 13.4 Z51 rotor. However after mocking up the brakes last night the lugs end up in basically the same place. In fact the lugs are incredibly close to aligning to the factory dust shield holes. If they were just a little closer I would seriously consider using the factory holes and drilling them out to the necessary 14mm.

garner

This is gonna be awesome!

87350IROC

iTrader: (2)

Brembo pads on the bottom. My old Wilwood FSL pad on top. And OEM pad on the right.

87350IROC

iTrader: (2)

I have completed reverse engineering the Dana 44 flange. Does anyone know where to get longer flange studs? A normal bolt or nut will not fit.

87350IROC

iTrader: (2)

I started working on the front brackets. Its modeled after Luke Skaff's Gen 1 CTS-V / 2010+ SS bracket.

I started out using 1/4" MDF due to its workability. I got the general fitment worked out but its tough due to how the caliper mounting bosses are shaped. The lower spindle bolt doesn't have enough meat around it. So I am going to have some material milled off the calipers to make the bracket more robust. Also I am not crazy about the bracket being only 1/4". I think a 1LE offset hub would have been better. I may see what Tobin thinks about running a 1/16" to 1/8" spacer between his hubs and the rotor. That would give me a 5/16" or 3/8" thick bracket. Much better.

Here you can see the odd shape of the bracket due to the rounded shape of the caliper lugs. I plan to mill off the "points" on the caliper to eliminate the need for two "dips" in the bracket.


Here you can see the other side. The lower spindle bolt interferes with the body of the caliper. I am going to see how a socket head cap screw fits. Worst case I will mill a very small relief in the caliper. Or if I end up with a 3/8" thick bracket, I could probably run that bolt in the opposite direction and just tap the bracket.


Finally here you can see the steering stop interferes with lower caliper bolt. I am going to hack up the steering stop to get it to work. I would prefer not to remove it all together.

87350IROC

iTrader: (2)

I got the calipers milled today. I am much happier with the Rev A bracket. Much more meat where it needs it. I still need to find a solution for the lower spindle bolt head clearance and the steering stop.

itsMikey

looks great!! those HRE's are awesome..

87350IROC

iTrader: (2)

Starting to come together. Got the steering stop clearanced for the lower caliper bolt. I was able to get everything bolted up for the first time. Just need to work on the clearance for the lower spindle bolt. I am pretty happy with how the caliper is clocked. I was shooting for perfectly vertical but its only a few degrees off. Better than some of the gen 1 CTS-V swaps I have seen.

Twin_Turbo

iTrader: (25)

Do what I did, cut off the steering stop and use a big head allen bolt to secure the caliper there, then when done put a small plastic cap or whatever over the bolt head if you want. It will act as a steering stop just fine, not a problem at all.

I really like what you're doing...most awesome brake swap period.

87350IROC

iTrader: (2)

Twin,

That is a good idea. I thought about that originally, but wasn't sure I wanted to introduce bending into the bracket, especially if its only going to be 1/4" thick. Good to hear it is working well for you. I will have to think about it.

hellz_wings

iTrader: (2)

Beautiful brake kit!

twigger

Dang I thought my CTSVs looked good, then I saw your swap. Simply amazing!

87350IROC

iTrader: (2)

Well I made some progress on the rear brakes. They are a pain for sure with the e-brake. In short the its like getting a square peg into a round hole. The CTS-V axle flanges are three bolt circular. The Dana 44 on the other hand has the standard GM 10/12 bolt trapezoidal flange. On top of that, the Dana has the standard high offset from diff flange face to axle flange. Where as the V is very low offset. So what I need is a bracket that is very thin to accommodate the bolt in axle plate yet very thick to space out the caliper mount and e-brake mounts to the rotor.

Large black dust shield is the CTS-V dust shield and provides mounting points for the drum e-brake.


E-brake stuff. This is my attempt at drum brakes. I'd appreciate any input if this looks right or not.


With caliper mounted.


Here you can see the experimental mdf bracket, haha. The stud on the left is one of two mounting studs for the e-brake cable. The two unfilled holes are two of 3 holes for the CTS-V 3 bolt flange.


And here you can see the e-brake needs to be spaced out around an inch.

87350IROC

iTrader: (2)

Well I got the rear bracket completely designed. It will be 6061-T6 AL.

4 small holes and center pocket are for the axle retention plate. The 2 holes on the left are for the caliper. Three larger holes at 12:00, 6:00, and 9:30 are for the dust shield and e-brake mount. Two larges holes at 2:00 and 4:00 are for the e-brake cable bracket. Two very large holes on the left side are for lightening. Weight is about 2lbs per bracket.




Stresses look good.


Deflections looks good.

Copchaser

iTrader: (2)

Ur on a roll.John.. looks fantastic!! I'm finishing up my 2010 brembo swap now. I also am running 19s, but I'm currently waiting on flush mount valve stems as mine are positioned inside the wheel. Very good work.

BTW.. do u plan on resusing the mini dust shield that sits behind the hub, but up against the spindle?. I thought about cutting the shield off the backing plate and drilling a hole for the bolt to mount up. I am running the Racecraft drop spindles.

87350IROC

iTrader: (2)

I'm afraid I'm not sure what dust shield you are talking about. You talking about the OEM 3rd gen dust shield? If so mine are long gone. I removed them when I swapped to the Wilwood front calipers a few years ago.

Any pictures of your whee/brake setup?