power brakes, 57 buick special

[2DoorHardtop]

I know my car has power brakes, was wondering if there is a way to test the performance of the vacuum booster? A way to see if it is doing everything it is suppose to do?

[maxwedge]

Pretty much seat of the pants, does the pedal hiss or hear a vacuum loss when held in the boost position, it is a vacuum booster correct? Does the assist feel adequate driving? Engine off, pedal should be hard then when started go to a normal height.

[Blue Bowtie]

If it's the old Bendix Treadle-Vac booster and cylinder, it will make noise when the pedal is depressed, and will not necessarily hold vacuum when the engine is off.

[2DoorHardtop]

Originally Posted by maxwedge

Pretty much seat of the pants, does the pedal hiss or hear a vacuum loss when held in the boost position, it is a vacuum booster correct? Does the assist feel adequate driving? Engine off, pedal should be hard then when started go to a normal height.

Thanks for the info......looks like I will need a new booster, now just need to figure out where to get one????

[2DoorHardtop]

Thanks for the info.. looks like I need a new booster, any good places I can purchase from? Reliable and good prices...

[maxwedge]

Try Napa, they may still be able to one, then get a Hemmings News, plenty of advertisers there.