They say 426 on them. I bought a LS1 rearend that was put into a 3rd gen and it had these calipers and 10.5" rotors. One of the calipers is bad and I need a new one fast.

stock delco moraines from an earlier 10 or 9 bolt staggered rear setup.

82-88.

JamesC

So if I go to Advance, what should I order?

a 3rd gen rear disc caliper, for a 82-89 camaro...left or right as needed

sure its a ls1 10 bolt? not sure why somebody would put those POS calipers on a ls1 rear that came with the 12" pbr's

The LS1 rear didn't come with brakes. I guess they just had these calipers laying around. Is there something else that I should use that would work with these backing plates and cables?

if the backing plates are not hacked, then stock ls1 rear discs would bolt right one and be nice, but need their proper backing plates

No. With the correct backing plates, you could mount either 89-97 PBR's or 98+ LS1's. The latter the best choice. Both kits can be purchased here:

http://www.flynbye.com/catalog/c1_p1.html

JamesC

Thanks for the help guys. I gave AutoZone my old calipers and they gave me reman ones for $48 each so it's all good now. Hoping to have the Camaro driveable in a few days.