i've got an 89 camaro with the rear drums. i've replaced the shoes, springs, and wheel cylinders. the rear brakes didn't feel like they were grabbing much so bled them. i noticed when i was bleeding them that there wasn't much fluid coming out. i've bled cars with drum brakes and have always had quite a bit fluid of come out. i was having to use a socket and ratchet to do it because those bleeder screws a recessed into the wheel cylinders. i intalled an adjustible proporting valve and a new master cylinder. it helped some, but not a big differance. i've opened the prop valve to where it is fully open and it still doesn't push a lot of fluid through. i've replaced all the brake lines except the ones that go on the axle housing itself. any ideas?

 

I've got a couple of ideas.
1. check that break line on the axle for kinks
2. Obvious but got i to say, make sure the resevoir is full
3. make sure your using new fluid and not cylcing the old fluid back through.( could cause blockage)
4. Make sure that u adjusted the brake shoes out so they drag on the drum alittle.

 

there aren't any kinks in the lines. resevoir is full. when i replaced the lines i drained the system and refilled it with new fluid. the shoes are adjusted properly. i thought it might be a clog in one of the lines, but its both lines doing it. one more than the other.

 

before i did all of this if i had the back end raised up in the air and put it in gear it wouldn't hold the tires, but now that i've done this when i put in gear they will turn about an eighth of a turn and then it hold them.