I just put LS1 rear end in, and changed rear calipers. Put new rotors, brake pads in the rear and bleeded the rear brakes. First time took my car for a little ride, and I had almost no brakes Then my front brakes started to smell like something was burning. Do I need to bleed front brakes too if I changed rear calipers, or there is some other problem in front brakes.

Thanks,
Tomas