What is the difference between power brake pedal and manual pedal?

retractable said

just added a power booster to the 66 Barracuda and I lost pedal height. Bill when you did yours did the brake pedal stay the same height? I am trying to figure out what is different on mine. I did not change the brake pedal.

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Mine isn't a good reference since I am using a booster and MC from a late 90's Breeze. If anything, my brake pedal is a bit high rel. to the throttle, but maybe that was factory (didn't measure before I stripped it). I could just move the booster out more (nuts and washers). Not driving the car yet, so haven't tweaked anything.