Need help with a hub!

[newmexicosaint]

I have searched and searched for a thread that will tell me which GM hub will work with a C5 brake swap for my 2nd gen camaro. It is stock disk front right now and to my understanding I must swap to a drum brake hub. I would really appreciate if anyone can help me with the details of which GM Hub (part number) and any modifications, if any, are necessary to the hub and possibly which bearings to use as well as any other relevant information.

I hate to drop $320 on billet aluminum hubs at Kore3 (although I am sure they are worth it) cuz I CAN'T afford that route. PLEASE HELP ME!!!!

[Nessumsar]

I am in need of the same info! You can buy new ones, but Tobin at Kore3 adivises against them.

[newmexicosaint]

I wonder why he would be against buying new? I guess it could be because they sell a billet hubs...I hope he will chime in on this.

[MrQuick]

what bracket are you using, we always cut the stock rotor to use as a hub. any brake service shop can handle the job.

[newmexicosaint]

I don't have the brackets yet but the plan is to buy them from Kore3. Would you mind explaining in a little more detail what you mean by cutting the stock rotor? Are you talking about cutting off the existing rotor and reusing the stock hub? I am still open to any and all suggestions. Thanks.

[srh3trinity]

I bought third gen Camaro disks and I am having them cut down to use as a hub. This is one of the options that Tobin told me about. I am buying my brackets from him. You could call or email him. He has been very helpful when I have talked with him.

[Nessumsar]

I wonder why he would be against buying new? I guess it could be because they sell a billet hubs...I hope he will chime in on this.

Tobin told me that he does not recommend buying the new hubs because they are Chinese made and he has seen a few of them fail.

Stephen, 3rd gen rotor huh? I'll have to ask my buddy if he has some lying around!

[Apogee]

The hubs that Jon is speaking of are the early A/F/X-body reproduction hubs and the ones we've seen have been absolute junk (terrible tolerances, high runnout, etc), but that doens't really apply to a second-gen F-body (GMF2) application since the GM short-spindle drum hub flange offsets are close to 5/8" wider.

That said, you can cut down a hub/rotor as mentioned above to create a hub. Our GMTS billet hubs have the same flange offset as a 1982-1987 F-body rotor (GMF3), so that's as good a donor as anything. It will have M12x1.5 studs and SET6/34 inner and outer wheel bearings. The SET34 has a .844" ID and is compatible with the late second-gen spindles, however the earlier spindles will require a SET2 outer wheel bearing with .75" ID. The OD of the SET2 and SET34 are the same and as such, interchangeable with one another. There are some companies selling pre-modded hub/rotors if you look around a bit. The GMF3-based hubs will narrow your track width by less than 1/32" per side when you factor in the .300" C5/C6 rotor hat thickness.

Alternately, you could do the same thing with your GMF2 hub/rotors and just have a 5/16" wider track width per side. You would need to space the caliper and/or caliper mounting bracket accordingly to match the new position of the rotor, but this might be a low cost option for you if you're buying your wheels after the fact and want to do the hub modification yourself. You would then just need to increase your wheel backspacing as well.

HTH,
Tobin
KORE3

[Nessumsar]

Hey Tobin, what are good donor cars for hubs for an X Body?

[Apogee]

Hey Tobin, what are good donor cars for hubs for an X Body?

Chevy applications from the following years and body classifications:
1964-1972 A-body drum/drum
1967-1969 F-body drum/drum
1968-1974 X-body drum/drum

Some of the BOP applications are the same as the Chevy's, others are not. There are also some disc brake hubs that were used on the 4-piston setups in 67-68 on various applications which look like drum hubs but have different flange offsets, so beware that they exist. If you set the Chevy drum hub flat on a table with the snout pointing up, the distance from the face of the flange to the table should be approximately 2.415" (or 2-7/16" plus or minus in rough tape measurement numbers if you prefer).

Tobin
KORE3

[newmexicosaint]

Tobin, Thanks! I would like to call you and ask you some more questions if you don't mind. All of you guys have been very helpful. Thanks!

[bmiller]

I used A body drum hubs on my C5 setup with Kore 3 brackets, cheap and worked great

[newmexicosaint]

Bmiller, is your car an 2nd gen F body?

[bretcopsey]

Chevy applications from the following years and body classifications:
1964-1972 A-body drum/drum
1967-1969 F-body drum/drum
1968-1974 X-body drum/drum

Some of the BOP applications are the same as the Chevy's, others are not. There are also some disc brake hubs that were used on the 4-piston setups in 67-68 on various applications which look like drum hubs but have different flange offsets, so beware that they exist. If you set the Chevy drum hub flat on a table with the snout pointing up, the distance from the face of the flange to the table should be approximately 2.415" (or 2-7/16" plus or minus in rough tape measurement numbers if you prefer).

Tobin
KORE3

Here's a picture showing the difference described by Tobin

[bmiller]

71 El Camino

Bmiller, is your car an 2nd gen F body?