Originally Posted by 89onlyZ51 (Post 1589491836)

These are on an '87 Guldstrand Grand Sport 80 I just bought. The spindles definitely are pre-'88 according to the part number on them. Looks real factory. Maybe Camaro 1LE?


https://cimg0.ibsrv.net/gimg/www.cor...5e70cfbe77.jpg

Originally Posted by Cliff Harris (Post 1589492923)

The ones I have were made by Stainless Steel Brake Corp. I'm sure there were others.

Originally Posted by WVZR-1 (Post 1589493127)

Calipers look like the later JL9/C4 offering. Is the rotor just short of 12" diameter? A snapshot of the outer would likely confirm. The "cast" adapter would have been a "high volume run" offered by many. I wouldn't think 1LE because I thought the caliper bracket was different when that caliper was used on F-body. Hydraulic fitting location maybe also. Those GS80's were built later after J55's were introduced so if it's a 13" rotor.

Hub and bearing hardware appears "substandard" and incorrectly mounted, OE I'm quite sure is nutted on the spindle back-side.

Considering it was Guldstrand maybe everything came through Baer

Originally Posted by 89onlyZ51 (Post 1589495866)

Pretty sure it's J55/13" rotor as that's what was in the Guldstrand paperwork. I'll measure to be sure, but I can't snap a pic of the other side yet as the car's in a warehouse away from my tools.

I'm guessing you're right and that's an earlier Baer bracket setup. You're also right about the hub bolts being backwards compared to oe. Don't know why they did that, but this is a track car and doesn't have the dust shields either.