Hub Mod for Kore3 14" Z06 Hybrid Disc Brakes

[68renner]

I need some help here guys. This is for a 68 Camaro. If my understanding is correct, the Kore3 14" C6/Z06 Hybrid front brake using 14" Z06 rotors and standard C6 calipers requires a disc spindle and a drum hub. However, the drum hub has to be modified to work with the rotors. Where does the hub have to be modified? And how much/what are the dimensions of the modification for this to work? I attached a picture of the hub so you guys could give me some visuals. Thanks

[68renner]

OOOPPSS:help: I was looking at 2 different things and posted this in the wrong place!! Could someone please move this to the disc brake forum!!!:smashcomp

[1FstChevy]

Well, from what I've read on their website they don't machine in grooves into the hub to compensate for the casting on the back of the C6 Z06 rotors, and instead sell those 14" rotors for more $$$ by machining off that casting.

I had a set of hubs made with that casting in mind and therefore machined into the hub which makes more sense for repeatedly changing rotors down the road.

As far as anything else that would have to be modified outside of it pretty much being a turned down 3rd gen rotor to begin with are beyond me, then again you have a 1st gen and not a 2nd like I'm referring to so a few things may be different there as well?

[shep]

Not sure on the C6 stuff but for C5 the outside diameter of the hub has to be turned down to fit inside rotor about 5.9 inches. I would assume that it is the same for the C6 rotor.

[Apogee]

For a 1968 Camaro, you're dealing with GM short-spindle hubs. The outside diameter of the flange must be turned down to be less than 6" and in order to run the C6 rotors, you'll also need a generous chamfer (.120" x 45 or more) to accommodate the fillet radius inside the hat due to the heat dam design. Obviously, the smaller you make the flange, the smaller the chamfer can be. Aside from new bearings and wheel studs, there are no other modifications recommended for the hubs.

The rotors offered by KORE3 are not modified in any way for any of the GMSS kits, including the Hybrids. Unless you're running a 5x5 pattern and/or the larger center pilot register, you just run standard C5/C6 rotors as they come.

The flange offfset of the GM short-spindle (1st gen) and tall-spindle (2nd gen) are totally different, so the 3rd gen hub option does not exist for 1st gen cars unless you're doing something completely custom and want to narrow your track width significantly.

Tobin

[68renner]

I'm assuming you are referring to the chamfer needing to be on the leading edge of the face after it is machined to less than 6"?

[MarkM66]

I'm assuming you are referring to the chamfer needing to be on the leading edge of the face after it is machined to less than 6"?

Yes.

I've done this several times. It works well to just put the whole spindle in a vice, hub horizontal, and use an angle grinder to grind the hub while bolted to the spindle. You can angle the grinder to slowly rotate the hub creating a uniform finish. Just grind enough for the rotor to fit flush to the hub.