New Brakes

[DButler]

I just installed new brakes on my 67 camaro. I installed cpp c4/c5 hybrid kit on front and kore3 c5 on rear. The front is 13" with c5 calipers. The front brakes seem to make a growl noise once they start to catch. The rear doesn't seem to make any noise. I ran all new brake line and I am running a wilwood proportioning valve. I have it set right now where the rear has full pressure. Will the front make a growling noise like that until the pads mate with rotor and should I adjust rear? I just want to make sure that there is not something wrong.