87350IROC

iTrader: (2)

Just to clarify, 18's can work as well. It is tight though and you need to check.

SiCkRs

iTrader: (6)

agreed especially with the rear brakes

DAVECS1

iTrader: (2)

I am using a quick performance rear axle and it works pretty good. Here is the thread. THe Spohn TA is not a bolt together proposal, as you will see in the post. Also there is clearancing involved on the body. Also i would suggest getting some axle tube seals as the bearings on my car leak, even with RTV.

I am using flyin bye's rear ford big end new style brackets and they work great with my 1LE style rear brakes.

https://www.thirdgen.org/forums/tran...rformance.html

87350IROC

iTrader: (2)

Dave,

Looking at your pictures, it looks like the flynbye bracket does double duty as the axle bearing retention plate, correct?

BloodPhoenix

i have my set of brembo brakes just waiting on brackets. but where do i go to enlarge my hole for my stock hubs

DAVECS1

iTrader: (2)

Sorry I was never alerted that this post was made, but yes they do double as retainers.

ChevyRS-305

Guess their is no way these will fit a 17" c4 zr1 wheel front nor back eh? I wonder if the front would fit at least.

iansane

iTrader: (1)

I don't about the ZR1s but user Dewey316 has the ctsV versions on c6 13.4" rotors under 17" c5 wagon wheels. I would imagine clearances are similar? You may not be able to get the big rotors, but calipers can fit.

ChevyRS-305

I imagine i could only do fronts then but smaller rotor means different brackets from the 14" ss rotor right? I may just keep rear ls1 rotors and calipers unless i could keep my ls1 rear rotor and get a different bracket for the ss brembo caliper? Idk if the rotor thicknesses are the same or not.

87350IROC

iTrader: (2)

The Camaro SS caliper on the 14" Camaro SS rotor does fit inside SOME 17" wheels. Here they are inside a 17" CTW wheel. I don't know if they will fit in the ZR1 wheels. But with the spacer required for the ZR1 wheels, there will at least be no caliper to spoke issues.

The Z51 rotors are a no go with the SS Brembos as the Brembo pad is taller than the annulus of any of the Vette rotors with the exception of the ZR1 rotors.

Pretty much any machine shop should be able to enlarge the rotor center bore. My local machine shop charges me $25/rotor but I do high volume with them. Give them the hubs as well to ensure a nice tight fit.

The rears are unlikely to fit in 17" wheels as the rear rotors are 14.5". I can check later, I have all the parts here. It would not be hard to re-design the bracket for a smaller rotor. Again we would need to check the pad height vs rotor annulus.

ChevyRS-305

Well that would be grand if you could let me know if the rear brembo will work on a standard ls1 rotor. Please keep in touch.

87350IROC

iTrader: (2)

Do you have a rear LS1 rotor handy, I don't. If you do measure the friction surface height and I'll measure the pad.

ChevyRS-305

I do believe its 11. 54 diameter with 1.87 annuals

ChevyRS-305

I think its a difference of .12" between pads

87350IROC

iTrader: (2)

Yup, the pad height is 1.99". So that won't work

ChevyRS-305

Is that just the pad surface itself or the total height of the pad and backing together? Wonder if i could modify the pad to shorten it. Like grind padding surface down at the top.

ChevyRS-305

What would be the consequences of having a pad bigger than the annulus at .12" taller?

87350IROC

iTrader: (2)

Yes, the friction material is to tall. You could machine the material off, but you would need a mill to do it right.

87350IROC

iTrader: (2)

Really nothing, except in my opinion it is sloppy, and I wouldn't design a kit to do that. You may have some funny pad wear at the overhang.

ChevyRS-305

What do the annulus measure on the rear ss rotor so i can find a rotor that is small in diameter but big enough annulus to fit an SS pad and caliper. Kind of like a hybrid of an ls1 and SS. If anything willwood could custom make a rotor and flynbye could make the bracket. Dont need a hat because im running a hydraulic hand brake off a separate caliper anyways.

ChevyRS-305

I take that back. I do need a hat for the rotor offset so i have clearance between the rear caliper and backside of wheel

87350IROC

iTrader: (2)

Well you need an annulus of at least 2". Since you are running ZR1 wheels, I'm sure you are running very large adapters in the rear. In that case, the rotor offset really doesn't matter as the caliper to spoke clearance should be excessive. Honestly the smallest possible offset makes it easiest to package. Are you saying you are running a spot caliper for the e-brake? Any reason for going this direction?

ChevyRS-305

Im running a 4th gen rear end so their is no spacers. And i didnt measure the annulus right, they are 2.04" and yes its a small 2 piston caliper from brembo and that's because i do local low budget drift events for a hobby held at my local gateway raceway.

87350IROC

iTrader: (2)

Cool, your bracket is a piece of cake then, since there is not e-brake required. I'll see about picking up a rear LS1 rotor today and doing the fitment if you really are interested.

Also, how are you mounting your current brakes to the axle? You currently have LS1 brakes? And how is the e-brake mounted?

John

ChevyRS-305

I just made myself a home made bracket that fits on the back side of the mounting flange so it has no direct connection with the stock caliper bracket. If you could get an ls1 rotor and moch it up and try to make a bracket that fits the brembo caliper nicely over the rotor and still fit inside a 17" wheel...that thing would sell like hot cakes at a fat farm!

87350IROC

iTrader: (2)

Yeah, the only problem is most people want to use the stock LS1 e-brake. The offset on the rear LS1 rotor is very high, we might have to end up using a rear bracket like you did for your e-brake. I may look at this with a C5/C6 rear rotor as it has less rotor offset, and easier to work with the e-brake. However it will also have less brake-spoke clearance.

ChevyRS-305

Well if were able to pull this off how much we looking at price wise? And do you have a zr1 wheel to mock it up?

87350IROC

iTrader: (2)

If its a simple 2D bracket, the cost would be somewhere around $140 shipped for the brackets. That is a stainless bracket with stainless ARP hardware. I can probably make up a template for you to check fitment.

ChevyRS-305

For a custom set of brackets thats not bad considering all the precision required. And how about just measure from center of hub to the outer most part of the caliper(mounted up) and ill measure the inside diameter of my wheels and divide by 2 and give you my measurement and hopefully mine is bigger than your number

87350IROC

iTrader: (2)

I know they will fit inside the wheel, its really a question of caliper face to back of spokes clearance.

ChevyRS-305

Well i could always fix that with a spacer if need be. No big deal.

ChevyRS-305

So i measured my wheel from the backside out starting at the backside of the spokes and it is 15.25"/ 16"/ 17" so its coned shaped and progresses an 1" in diameter every 3 inches or so.

87350IROC

iTrader: (2)

Sorry for the confusion, are you talking about the inside diameter of the wheel? If so 15.25" is just fine for a 12" rotor. I will get the caliper to spoke measurements today.

John

ChevyRS-305

Yes the inside diameter. I know the rotor will fit saying these wheels came off my buddys 4th gen along with the rear axle its just that massive brembo caliper im worried about.

87350IROC

iTrader: (2)

Sorry for the delay. Yes, I am saying the kit will fit no problems diameter wise. A 13" rotor kit would fit inside any 17" wheel. I can guarantee the critical dimension for your wheels is the caliper to spoke clearance.

ChevyRS-305

And that can be fixed with a shim or spacer so im not worried. Im ready to see what this hybrid looks like. Then we can talk about paypal and money issues.

87350IROC

iTrader: (2)

Is this for the 10 bolt?

I should have some time to take a quick look at it today. Keep in mind, with the 10 bolt, I do NOT recommend going to fixed calipers. The 10 bolt's c-clip axle retention allows the axle to float in an out of the housing. The fixed calipers are more susceptible to pad knock back when cornering than sliding calipers.

ChevyRS-305

Well i also have a fix for that too. They make a kit so you can eliminate the c clips. I have been looking into it for a while because im afraid of my axle falling out while in a drift.

87350IROC

iTrader: (2)

So is this for the 10 bolt?

I have seen those. Just make sure you do your research, most of those eliminators are for straight line cars only.

87350IROC

iTrader: (2)

Well I picked up a 4th gen rear rotor and the annulus is 1 7/16". So I'm not sure where you got 2.04" from, but its not accurate. The Brembos will not fit on this rotor. We'll see about the Vette rotor.

ChevyRS-305

Their is no way... i just compared my rotors to an ss at a local dealership and my annulus are 1/8 bigger. I measured from the edge of the hat to the outer part of the rotor....where the pad rest..

ChevyRS-305

Can we try lt1 rotors? My buddy has a set of those so i can come across those pretty easily and their cheaper than vette rotors I would assume.

87350IROC

iTrader: (2)

2 things

1. Flip the rotor over and measure the inboard annulus, it is cut smaller than the front where I assume you measured

2. On the outboard side, the friction surface does not actually extend all the way to the hat, at least it doesn't on the bendix rotor I have here. Only the outer 1 7/16" is machined.

Similar to this:

87350IROC

iTrader: (2)

The problem with the LT1 rotor is it is only 0.79" thick. The Camaro / CTS-V Brembos are built for a 1.1" thick rotor. You can get spacers to space the pads out, but that is a huge difference in thickness. You are probably looking at at least $100 in spacers.

Vette rotors are really not that expensive. The Centric Premiums that I like to use are ~$35/each.

ChevyRS-305

Ooohhhh now that makes since why i wasn't getting the same measurement as you. Well i guess my only hope is the c5 rotors...

87350IROC

iTrader: (2)

There may be other options. Since you have a seperate e-brake, we could actually use a front rotor on the rear. One that comes to mind would be the C4HD front rotor, 13"x1.1". That would fit inside a 17" no problem.

ChevyRS-305

Im going to leave it up to you from here on out. I have waisted enough time as it is with false information lol. Ill try and help out where i can but keep me updated on your findings

87350IROC

iTrader: (2)

The C5/C6 rear rotor won't work either, they are also 1 7/16".

I think we might have to go with a front rotor. I'm going to give the C4 HD a shot. This would definitely require you do re-do your e-brake bracket for the larger diameter and different offset.

John

ChevyRS-305

Alright. I just hope i dont have to space out my wheel too much farther otherwise i would have to return to stock just so i could use a spacer for caliper to spoke clearance and not have my wheels sticking out past the body

ChevyRS-305

Any updates??