Brake help.

[Fun_in_my_z]

Hey maby someone can help me out. The rear brakes on my 72 are gone completely. The car has new rear calipers on but smething aint right.

When I hit the brakes it pushes the front wheels. The back wheels just keep going. When i moved it around the yard earleir I put it in reverse and held my foot on the brakes as hard as I could and it drug the front wheels and span the back. Ive but new preportion valve on and that helped for a while but now its back the way it was.

I blead them out about 10 times and nothings changed. I havent had the chance to tear into them as it is about 25 degrees outside.

Can anyone give me any ideas on where to start?

Thanks Bill

[Fun_in_my_z]

Have i stumped the z community?

[LanceM]

Well yah sort of.....

Your rear brakes have new calipers???? on a 72? Stock was drum in 72, and drum brakes don't work well in reverse so between them being on the powered axle and being in reverse I could believe that the fronts skidded and the rears didn't, of course how could you tell if the rears were working if they couldn't over power the engine??? But that aside...

Here's my guess and first suggestion of something to try. The rear brakes are adjusted by using the E brake. Pull that sucker up hard 5-10 times and try again and see if the rears are working better... If the E brake dosen't work (broke/rusted cable) that is probably your problem, they are not adjusted correctly, they are not automaticly adjusted like on newer cars.

Good luck and happy holidays!