c10: Baer vs???

[Apogee]

It depends on the spindles that you use as there are heavy-duty and light-duty versions of the 6x-87 truck spindles depending on the year (OE or aftermarket). The HD spindles came with 1.25" thick rotors, SET5 inner and SET3 outer wheel bearings and have a larger bearing spread than the LD versions. LD spindles came with 1" thick rotors, SET6 inner and SET3 outer wheels bearings, comparable to the 1991-1996 B-body and various other "tall-spindle" applications.

You don't specify years, however I assume that you are asking about compatibility with the 1964-1972 A-body, 1967-1969 F-body and 1968-1974 X-body drum hubs. The short answer is that they're not compatible with the HD truck spindle (also common with the 71-76 B-body) due to the bearing size and spread differences. Additionally, while these drum hubs should work with SET6/34 wheel bearings on the light-duty spindle pins, there isn't a compatible inner oil seal for the hub counterbore and spindle pin shaft diameter that I know of to use.

HTH,
Tobin
KORE3