HELP!!!! I just finished putting power brakes on the old `47 Coupe. I used an underfloor mount, with a `90 Mustang booster/master cylinder combo. It has drum brakes both front & rear. I used a 10# check valve both front & rear with an adjustable proportioning valve in the rear line.
My problem is that the front brakes keep locking up. Sometimes only after driving just a few blocks, but sometimes I can drive a hundred miles with no trouble. I keep bleeding the system, but I'm at a loss as to what else to do.
Can anyone help with this problem?