1967 Camaro Disc Brake Hub Help

[nicks67camaro]

I have a 1967 camaro with factory disc brakes (4pot) I recently had the hubs turn down and noticed this

Hubs with correct stud (shim?) not sure what else to call it.
https://static1.pt-content.com/images/pt/2009/06/2n9luzn-1.jpg

now here is what is missing.
https://static1.pt-content.com/images/pt/2009/06/2vv6wcx-1.jpg

Can this be replaced?

[nicks67camaro]

anyone?

[Tom Welch]

I dont see why a machine shop couldnt replace a bushing or shim like that, its not a difficult job to do.

[Apogee]

Those don't look like my friends '67 hubs and he has the same brakes as you. What wheel studs are you running? My only concern with sleeving a wheel stud hole like that would be that the under head area may not be sufficient to reach good hub material. A non-flanged bushing/sleeve can go in or out either direction, whereas a flanged bushing is one way only, so I'd probably do that or run an oversize knurl diameter with new studs.

Do you have more information on what we're looking at?

Tobin
KORE3

[nicks67camaro]

I dont see why a machine shop couldnt replace a bushing or shim like that, its not a difficult job to do.
These were turned down at my Grandfathers on his lathe. (free:))


Those don't look like my friends '67 hubs and he has the same brakes as you. What wheel studs are you running? My only concern with sleeving a wheel stud hole like that would be that the under head area may not be sufficient to reach good hub material. A non-flanged bushing/sleeve can go in or out either direction, whereas a flanged bushing is one way only, so I'd probably do that or run an oversize knurl diameter with new studs.

Do you have more information on what we're looking at?


Tobin
KORE3

These came off my the extra Hub/Rotor from my old disc brakes. I have purchased a set of moroso 7/16 20 press in wheel studs with a .480 Knurl.

Where would you get a flanged bushing from?

[nicks67camaro]

https://static1.pt-content.com/images/pt/2009/06/2e52npc-1.jpg

I measured the hub they are 3 3/4" (using a tape measure and level) from the bottom to top reference above.

[Apogee]

Interesting...those hubs have more flange offset than my friends '67 by what appears to be a significant amount. The overall height appears to be the same (~3.81" is what his measured), but your flange looks to be about 5/16" further outboard.

As for the holes, I'd make the bushings since you have access to a lathe...but you'll need a milling machine to clean up the wheel pattern and oversize the holes for the bushings. For one hole, it wouldn't be too time consuming...for all ten, it'll take a while. How do the diameters of all 10 holes look? Is there only one sleeve and one "missing" sleeve in your opinion? Does anyone else know anything about these hubs?

Tobin
KORE3

[nicks67camaro]

Yes, it is only one hole that is missing. All the others are in tact and look good. I think I'll start with cleaning up the shoulder (or step in the hole) then use a new bushing.

[Apogee]

I don't know what the wheel stud head diameter is for the Moroso studs that you have, but the Dorman 610-157 wheel studs are 7/16-20 x 2-1/8" and have the largest heads that I know of for a 7/16 stud at almost 3/4" OD. Depending on your bushing size, you may want to consider swapping studs to be safe.

Tobin
KORE3

[nicks67camaro]

I don't know what the wheel stud head diameter is for the Moroso studs that you have, but the Dorman 610-157 wheel studs are 7/16-20 x 2-1/8" and have the largest heads that I know of for a 7/16 stud at almost 3/4" OD. Depending on your bushing size, you may want to consider swapping studs to be safe.

Tobin
KORE3

I just looked at these online. Looks like some extra safety margin. The knurl on these measure .487". Which may require me to open up the bushing. Yesterday I Opened the hole and cleaned up the shoulder. I then made the bushing about .06" - .08 oversived then pressed the bushing in the hub. I got the ID of the bushing to about .450". The knurl measured .480" I then took about .21 off with a reamer in the drill press to get the ID to .470" giving me .10" to press into.

[Chevy Kid]

Those look to be the hubs for two piece factory rotors for 67. If in fact that is what they are, I don't think they will work with the disc brake kits such as what Tobin sells. You will need drum brake hubs. I'm not sure if the spindles are disc or drum brake type spindles.
I had a friend who had four piston factory discs on his 69 Firebird. They looked similar to these.

Tim

[nicks67camaro]

I though his kits had a disc brake bracket option?

On the website it listed 3 types of spindles Its the 3rd spindle listed.

http://www.kore3.com/proddetail.php?prod=10083-01

I'll have to talk to tobin to confirm.

[Apogee]

Because the additional offset is outward, you will just need to run spacers between the pad abutment bracket and conversion bracket or between the conversion bracket and the spindle. There's a similar issue with running the later "WideTrack" Pontiac drum hubs, however with the same solution. It means that a few of the fasteners would have to be swapped out for the additional spacing as well as the increase in track width versus a kit set up with the factory Chevy drum hubs.

Nick, the various short-spindle configurations only determine the hardware necessary to bolt the brackets to the spindles. Sorry if it is confusing with respect to the hubs. Our GMSS kits are designed around the Chevy drum hub flange offset. Please feel free to shoot me an email or call and I can send you a reference drawing of the hub flange offset for comparison.

Tobin
KORE3

[Hammered]

Never mind.

[nicks67camaro]

Because the additional offset is outward, you will just need to run spacers between the pad abutment bracket and conversion bracket or between the conversion bracket and the spindle. There's a similar issue with running the later "WideTrack" Pontiac drum hubs, however with the same solution. It means that a few of the fasteners would have to be swapped out for the additional spacing as well as the increase in track width versus a kit set up with the factory Chevy drum hubs.

Nick, the various short-spindle configurations only determine the hardware necessary to bolt the brackets to the spindles. Sorry if it is confusing with respect to the hubs. Our GMSS kits are designed around the Chevy drum hub flange offset. Please feel free to shoot me an email or call and I can send you a reference drawing of the hub flange offset for comparison.

Tobin
KORE3

Thanks Tobin, I just lost the input shaft on my transmission so I need to refocus on that. I will be calling you in the near future for some brake parts.

Thanks again.