i have a 82 trans am with a 5.0 cross fire injection.

it currently has a new radiator, water pump and a stat.

it t over heating and i can think of what else it could be but a blockage in the block somewhere.

any tricking on finding it and removing it? the upper rad hose stays cold and my lower and heater hose gets hot.

 

if your upper hose stays cold thats an indication that the tstat isnt opening. take it out and drop it in a pot of nearly boiling water and see if it opens. did you get the reverse flow water pump or the standard flow?

 

Make sure you put your T- stat in the correct way as well.

 

remember to bleed the cooling system to get the air out.

 

I guess I have a bad head gasket

Drilled a hole in the stat and now runs at operating temp
it kept air locking itself

 

it could be that your tstat just isnt opening, did you ever verify that it was by placing it in a pot of boiling water?