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.

 

[PrairieDrifter]

I don't think you'll weld anything to that mess lol. The right way is to pull the head off and then do your surgery. But if the plugs are looking like that I wouldn't worry about getting crap in the cylinder as long as you're still careful.

Break the porcelain off and most likely drill the center out, then stuff the biggest easy out possible inside the spark plug and use A LOT of heat. An oxy torch. Not the little bottle torches. And lube.

If not you'll have to drill it out as thin as possible then pick it out in pieces.