I replaced front and rear brakes on my ranger and now when I'm driving I can feel them grabbing

So have you checked to see if the calipers are hanging up rear shoes too tight?Also did you have your rotors and drums refinshed?

I put new rotors on front drums in back looked good so just put new shoes if the shoes are too tight how you go about loosening them a little

You should have had the rear drums refinshed if you replaced the rear shoes.I would try adjusting the rear shoes untill you have had the rear drums refinshed.That way you know there there not out of round and have a nice finsh on them.