Hard pedal-'67 El-Camino

[Matt Ringer]

With a 2000# pressure gauge installed on a metric bleeder screw, drilled through the end, it reads 700# with my meat footed neighbor mashing on the pedal. That's also with 22" steady at the booster, so I have low pressure at the caliper. Is this bore size, or a proportionong issue, or Master cylinder not functioning correctly. There are plugs adjacent to the outlets on the master, should I get into them for an output reference #? Thank You again...Matt

[CPPAaron]

What bore size master do you have?

[Matt Ringer]

It is a 1" CPP unit got with the kit..

[Matt Ringer]

OK, I got sidetracked for a few days on a late model Trans Am. Heads (ICK)
SO, Aaron, I checked for a more advantagous rod placement and can't move the rod up for more mechanical advantage, as it puts a strain on the pushrod. Don't want that, are there any other reason I would have low caliper pressure? Would it help to install a double diaphram booster? Any thoughts are appreciated,
Thank you again,
Matt