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C6 GrandSport Brakes install

66676 Views 155 Replies 38 Participants Last post by  Choo
Figured I would throw up another thread for what I am getting into within the next few weeks.

I guess the car really didn't need brakes, then I got some killer deals on somethings and figured, oh well I guess I better just do it.

After talking with Tobin at Kore 3, great guy by the way, about the brake setup and I was going to modify to make work on my car, I decided to start hunting for a set of C6 Vette 6 piston fronts and 4 piston rears for calipers, 14 inch rotors in the front with 13.4 inch rotors for the rear.

No I was able to get a complete caliper set off a wrecked 2010 grandsport (same calipers as the Z06 silver instead of red) for pretty cheap and very low miles.

So I picked these up and began hunting down parts to see how cheap I could get away with doing this.

Here is a pic of the calipers.


I looked for sourcing of the rotors and I was going to go with Kore3, but I found a set of rotors for less than 1/2 the price of the rotors from Kore 3, no the machining for the 5 on 5 bolt pattern isn't done as well as the center bore needs to be opened up, but I have a local cnc shop that can handle that for me.

Here are the rotors that I got for the install, not GM but who cares really, as long as they work well, which they should. Hell he boxes with the rotors showed up today, the boxes with all four rotors was like 110 pounds total. I will shoot a comparison picture, old to new tonight when I go out and tinker a little bit with it. They are big, that is for sure.




I am going to have to figure out the parking brake setup as I am not going to pay 800 bucks alone for that setup, I am sure that I can figure that out.

So hopefully I can get this done rather quickly and not so costly, I think that I have most the parts, there are couple of things that I will get from Kore3, but I am truly on the fence about the hubs from them, not that they aren't great, I may just make my own from an old set of brakes, not sure yet.


Stay tuned.....
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Well figured I would update this. Everything is complete and getting ready for Nationals, in the alignment shop right now, brakes seem great still breaking them in, so dont know for sure yet, but crossing fingers all is good
I had to read that a couple of times. As I followed this thread I thought you were Mike (94MSP9C1) from Hamilton Chevy. cwm5:confused: Whoops.
And the other Mike has a 9C1 whereas this Mike has a regular Caprice that is anything but Regular!

Mike--94MSP9C1--Hamilton Chevy
Well figured I would update this. Everything is complete and getting ready for Nationals, in the alignment shop right now, brakes seem great still breaking them in, so dont know for sure yet, but crossing fingers all is good
notice any pedal feel change before/after?
Well not much to be honest, about the same, the brakes before on my car were ridiculously good. I had to space the new master cylinder away from the pintle in the vacuum booster about 1/4 of an inch. The damn thing was sitting too far in and it was causing a residual pressure issue in the system and the car could stop with out using the pedal. All is good now, well seems to be, haven't had the chance to ring it out much, but pedal feel is good, not too stiff but just right. Alignment fixed alot of sh** tracks right now, put the new spacers on for the wheels this afternoon and damn looks just how I want it. I will post pics sooner, probably on the way to Nat's or something Thursday.
nice

i didnt see in the post but did you make your back plate or do someone sale them
I used the original backing plate and modified it to work with the new calipers and brackets, I made the shim that is needed for it to all work together.
i would like to do something like that to my 9c1 but dont know how you would make the bracket to work
Without looking through this whole thread, I am pretty sure I showed pics of what I did. The rear bracket you have to buy from Kore 3, the backing plate is factory, but modified as stated above. What part aren't you sure about working on your car?
WOW! just buzzed over this whole thread, great stuff.... Thanks

Did I understand correctly that this set up will fit inside a stock wheel ?
WOW! just buzzed over this whole thread, great stuff.... Thanks

Did I understand correctly that this set up will fit inside a stock wheel ?
Thank you sir.

No it will not fit in a factory wheel, minimum 18 inch wheel is needed. I may have confused it a little as I am using a factory vette wheel ;)
sorry

sorry it took so long but im looking for the front caliper brackit that go on the modded spindle ive been looking with no luck and i wanted the impala rims but if i have to go bigger i seen some look a likes 2 years ago that had the size 18 in so i hope i can go that route but would i have to get the brackits made thanks
No brackets you can get from Kore3.com you will have to call or email Tobin tell him what you are doing, the front brackets are located here. Front Bracket

I have a set in my shop that I can sell if you need them, they are brand new with hardware. You will need at least an 18 inch wheel to run these brakes, 17's won't cut it.

Look within here Front big brake kit

If you are piecing everything together like I did, you are going to need a hub, I recommend Kore3's obviously, as well as the rotor will have to be machined for a new bolt pattern and center bore. Most people find it easier to call Kore 3 lay down the credit card and have a complete kit shipped, I am hard headed I guess.
Brakes so big...

Damn man, those brakes are so big...your body would brake away from the frame if you had to lock um up. :eek:

Awesome job.
thanks man, yeah it stops pretty good. :)
Back from the dead lol

Great thread Mike I will definitely have some questions for you when I get to my rear brakes this winter. I'll be installing 4 piston Camaro calipers.
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