first step would be to determine if you did blow a headgasket as that was the title of your opening thread
if you lost coolant the question is where did it go, did you have a temp gauge or a read temp # off the scanmaster ?
if its in the oil pan mixed with the oil and it did overheat it could be the head gaskets and plan on a full teardown and inspection of the heads and dropping of the pan to clean everything and look at the bearings
test the rad with a coolant pressure tester , if it doesnt hold pull the plugs and see if it changes
with plugs out look for signs of coolant on plugs , disconnect the ignition module connector and prop the throttle open , spin the motor with plugs out and see if any liquid blows out ,
then do a compression test
if compression looks good and even and the coolant pressure test is good then you can add water to rad and fix the fan issue ,looking in the radiator if the coolant doesnt start to flow at the temp of the thermostat then replace the thermostat