383GTABoy

Finally get my car running good but the brakes seem worse than ever. Not sure if this could be a vacuume problem or not. The brakes seem to be really hard (Pedal doesnt move much) but stopping power seems to really suc. My cam only has like a 480 or so lift so i should have enough vacuume. Anybody have any ideas. Possably master cylinder or proportioning valve. It seems th have a little excess brake dust on the passenger rear tire. Not sure if that has anything to do with it.

SSC

Sure sounds like a brake booster or unpluged vacuum line. A hard pedle 99% is a bad brake booster and soft pedle that you can pump up 99% is a bad master cylindar.

89RsPower!

was just reading ur sig.. whats a malibu ss? never knew they made 1.. is it just the same thing as a chevelle ss with diff badges or somethin?

383GTABoy

Thanks, after reading a bit more about brake boosters looks like im off to the parts store.

SSC

It's a Chevell SS with malibu interior/trim upgrade or Malibu with special order engine. Still doing research.

89RsPower!

ah cool didnt know you could get the malibu package on an ss.. a friend of mine has 1 but its becasue he had a malibu and made a half assed ss clone and left all the malibu stuff on and simply added wheels badges etc.. kinda intrestin to learn that what we all thought was a bastard was actually a real option hehe

RB83L69

The early "Chevelle" was originally called "Chevy 2 Malibu" for the first couple of years, then a "Chevy 2 Chevelle", then they dropped the "Chevy 2" designation altogether from both the Chevelle and Nova. Nowadays most people have forgotten that; the only "Chevy 2" that people remember being called that, was the "Chevy 2 Nova".

Check www.chevelles.com

383GTABoy

Well I replaced the booster and that didnt fix it. It feels like its getting plenty of vacuume though. Could it be the master cylinder or the porp valve. Any other Ideas

Dan88IrocZ

Master cylinder. I've gone through 2 in my car.

Take it for a ride around your neighborhood if you can, Make sure your e-brake works just incase. If it stops fine, and then you have no pedal next time, or if it's only an intermittent (sp??) problem...best bet is to replace the master cylinder.

Let me rephrase that. If you still have brakes, but a soft as hell pedal, and every so often your pedal is fine and the car stops like a dream, it's your master cylinder.

Dirty Rob

Yeah, and if the master cylinder totally goes, the pedal will go all the way to the floor, make a clicking sound when it hits, and the brake warning light will come on.

383GTABoy

The pedal seems very hard though all the time.