The 'big brake kit I have is based on '69-'72 Chevelle rotors.
I know this sounds a bit obvious but did your new rotors already come with bearing seats installed?

I assume you are aware you have to remove these and install the new bearing seats that should have been supplied with the bearing kit.
This 'adapts' the rotors to fit the Mustang II spindles.

My inner bearings are Timken Part #TL68110 Seat
The inner race is #TL68149
My outer bearings are Timken Part #TLM12710 Seat
The outer race is #TLM12749
The grease seal is specially made to fit the Chevy rotor/Mustang spindle.It is not normally a standard dealer part.

As Scott mentioned,tightening the nut too tightly will trash your new bearings...Don't ask me how I know.
I learned the hard way a few years back!


Last edited by jockbolter50; 09/13/2009 10:17 PM.
1950 Chevy Advance Design 3100 in Scotland
In the Stovebolt Gallery
More pix on Flickr.
I've definately got this truck thing in my blood ... my DNA sequence has torque settings
"Of all the small nations of this earth,perhaps only the ancient Greeks surpass the Scots in their contribution to mankind" Winston Churchill.