No heat!
 

I have blown head gaskets, getting ready to do them in next couple weeks. But I don't have any heat at all?! Is it because of head gaskets?

It was one of the symptoms when mine was diagnosed.:c:

If your head gaskets are gone, you'll be burning coolant. Low coolant or rather not enough coolant in radiator, means no heat.

+1 on this, this is exactly what happen to my 6.0. Lost heat and checked the coolant and there was none in the bottle it was about 2 gal low. Head studs should be in your future.

Could be a bad thermostat as well. I lost heat a month ago and that was it. I also have a partially blown hg.