72 Skylark that I have reconditioned all drum brakes.Problem is: when i start driving the car I have almost no brakes for several blocks. The longer I drive the better the brakes get. By the time I get back home a little spin the brake petal is high and the car stop very well(for drum brakes). What is going on here???? Check the master cylinder,booster?????. I have gathered most of my parts for front disks ,but in the mean time I still need to stop. What is the minimum vaccum for brake booster? How long after the motor is shut off should the booster retain vacuum? Ken
brakes Thanks George: I will bleed the entire system and if that fails I will proceed with disk brake conversion. Ken
