3rd gen Camaro rear disc brake?

I am having some problems with my rear disc brakes. This is the 4th year of running them. This year the pedal is almost to the floor and will not bleed out. I don't use the emergency brakes and was wondering if that might be part of the problem. I say that because I think that is what keeps the pads in the correct position for a good pedal.
I installed a new 7" booster, bench blead the MC and used speed bleeders to bleed the brakes. After all that I still have no pedal.
If you can shead some light it would be great. thanks Keith

Here are the brakes

 

Sorry, but I gotta ask, do you have the calipers on the right sides? Bleed screws should be on top. Seen this overlooked too many times....

 

Yep they are on the top

 

Hi,
I have second gen calipers on my 57 rear and I know they have a ratchet mechanism that adjusts the pads as they wear. Try cranking on the emergency brake mechanism a few times and see if the pads are moving.
Rick

 

I have GM rear discs on my current project. Haven't got to that point yet so I don't have any suggestions. BUT in my researching for parts I thought I read that with a disc/disc system you should use a 8" power booster and a master cylinder with a 1-1/8" bore. Anyone know if that's correct info? And could that have anything to do with BR's problem?

 

3rd gen cameros are the same as the second gen in that respect. They need adjusting from time to time.

 

These guys are right, you will need to crank on the e-brake...a lot. Once they get out of adjustment it takes a ton of pulls to get them to ratchet back into position. If you don't have them hooked up figure out some kind of a lever to hook on the arms at the caliper and you may need to go 40-50 levers on each caliper if they are that far out.

When I used to wrench it was a common mistake on these calipers for home wrenchers to just adjust the ebrake cable when the e brake pulled all the way up and they still wouldn't work correctly. Typically I would de-adjust the ebrake cable, then sit in the car and pull on the handle for 10-15 minutes. Eventually they would get back to the correct adjustment and the ebrake handle would pull up less than half way.

Long story short, if you do have E brake cables hooked up, make sure the levers on the caliper are returning to the stop when the brake is off or you will never get them to adjust.


Scot

 

I have them on the rear of my '35 sedan. They are supposed to self adjust when you use the park brake but I rarely use the park brake so about once a year (5,000 mi) I have to crawl under it and I manually work the arms a bunch of times to ratchet out that inboard pad...then everything is wonderful for another year. I guess if I would use the park brake once in a while I wouldn't have to do it manually.

 

Sounds like I need to tell the wife it would be good exercise for her by cranking the E brake arms. Thanks for the help. I wish I would have known this before I installed a new brake booster and cussed like a drunken sailor for the day.