[tomaszek]

So I bought the 5/16 socket for the oil plug in this 350 block. As you can see the plug actually split on one of the 90 degree corners. So I heated it up Tried on blaster. Tapping it to shock it. I pounded in a 55 torqx bit which was pretty tight but that slipped. So I ordered a bolt extraction kit with all the sockets up to 7/8 to try. So should I just try and left hand bit drill maybe 7/16 into the plug but not go through ? And try and extractor? I didn’t want to drill through bc I have no idea where the shards of metal will go through. I am using cloth and magnets and will use grease on the bit. But I’m freakin out about metal pieces eventually going down in the block. I have the pan off. So I could flush somehow. I only messed with the plug to replace with the drilled out plug from butler. I attached the picture

Or do I drill through the plug all the way with a smaller bit like 1/4” and extractor bit ?