73 Blazer 350 spark plug stuck

[Jimmy the Blazer]

I'm doing a 73 Chevy Blazer and the 350 small block has a spark plug stuck.
The nut attached to it rusted and crumbled leaving the spark plug still in the block as shown in pic.
Anyone have a trick to unthread it out now?

 

[Ricko1966]

I don't think anythings going to get it. I know what I'd try and at the same time I'd be ready to pull the head off. I'd get a piece of steel tubing with I.D. as close to O.D. of the porcelain as I could find,I'd also want it thin,but not too thin. This is a long shot but I'd pull the exhaust manifold clean the plug the best I could. Then I'd my tubing over the porcelain and hope I could find enough to weld my tubing to. Now try to turn the the plug out by turning the tubing,with vice grips,if you have to put a bolt in the tubing to keep it from crushing under the pressure of the vice grips. I doubt it works,but worth a try. Hopefully the heat from welding will help loosen the plug.