16 volts at alt and pulsates 68 valiant

So I have recently out a 360 in my 68 valiant and upgraded charging system with newer alt and vr. Now I get 16 volts at alt and the whole system pulsates any ideas? Thanks.

Well by newer i mean 1970 so I have isolated field terminals and as you described vr is a good one. It seems as though the vr is grounded properly and have replaced the vr just to be sure. Even added another ground strap to be certain that the ground path is solid. I will run a few more tests per your instruction and see what happens thanks for the help I will let you all know if I figure it out and what the exact problem is.