new brakes getting hot!!

[chev-obsession]

ok so i just recently swapped to front disc brakes....
i got new rotors, calipers, pads etc. we drove it down the road again today and the rotors were hot again, i touched th lugnuts and nearly burnt myself!!!!
The pedal rod is not a factor, so now im asuming that i have a bad master cylinder or proporting valve??? because when i put the pads back onto the rotor it would not turn freely, i had to use two hand to get it to move.
I never thought that this swap would be such a pain!