Originally Posted by
Rick_L
Thing is, the pedal ratio you can achieve without creating binding in the linkage is limited. On a 55-57, a flat mount booster or a manual setup is a setup that works well both with the geometry and with potential brake line pressure with the stock 6:1 ratio. An angled mount lends itself to a 4:1 ratio.
You also can work with master cylinder bore size to optimize this. More pedal ratio = more line pressure but more pedal travel. Smaller master cylinder bore = more line pressure and more pedal travel. This for a given caliper bore.
100 pounds pedal force is a lot. I think this is panic stop territory, not normal driving territory.