Did cars equipped with the 1LE option have the same REAR disc brakes as every other rear disc optioned car? Or are the rear calipers on a 1LE different? The reason I ask is because I put a set of "1LE" rear brakes on my wife's IROC-Z and now one of the calipers isn't clamping. I was going to buy a brand new caliper from Napa and they show a caliper with a note that says "For vehicles without high performance option". I'm just wondering if in fact the rear calipers are the same or different from a 1LE car to another regular rear disc car. If they are different, does anyone have a part number for the 1LE caliper, or better yet, have a set of them for sale?

 

All 82-88 rear disc cars were equipped with the iron Delco-Moraine calipers and 10.5" rotors. All 89-92 rear disc cars were equipped with the so-called 1LE alum calipers and 11.7" rotors. Regardless of year, they all have the same J65 RPO.

JamesC

 

I guess I should just measure the rotor to see which on I need huh

 

Compare the rear with the fronts. If they're the same, the car is equipped with the old-style Delco-Moraines. If the rear looks nothing like the fronts (which would still be Delco-Moraines), the car's equipped with PBR's (alum).

JamesC