disc brake question

[91hrdbdy]

hey yall i have a 79 malibu i just did a full brake swap i cant get the front tires to lock up?? and im not sure why here is my setup

front 12.19 rotor wilwood 4piston dynalites 1.75 piston dia the rear is a 11.5 rotor with a wilwood dynalite 1.375 piston size im running a 1.125 bore power master cylinder out of a 70 corvette (new) and a summit racing prop valve on the rear line.

i have stainless steel braided lines running to the front calipers here is how it have it plumbed in

on the front port furthest from the fire wall runs to the a "t" fitting and then to the front wheels
the rear port is running to the prop valve and then to the front -rear hard line then to the rear wheels. any help would be great.

when i apply the brakes in a hard stop situation the slows but i can get the front wheel to lock so somthing is not right it locked up before i added the rear setup with the old stock master cylinder

im a total noob at this so im sorry in advance.