np 203 in 79 GMC
ok, here it is. I pulled my transfer case and am wondering if it has been converted to not all time 4x4. When I turn the input shaft and have the case in High or Low with out the Lock only the main rear output turns. When I put it in HL or LL then both outputs turn. Since the 203 is supposed to be all time 4x4 shouldn't both outputs turn at all times? I understand that there is supposed to be a diff or clutch type device to keep the front and rear from binding when turning in plain H or L when not locked out, but both out puts should turn shouldn't they?
help me please