Removing spark plug from Heads.

So, the motor is a 3400.

a spark plug broke off, and is stuck inside one of the threads.
an easy out won’t get it out.

It’s mother fuckin tight.
Presumably cross threaded.

Heat, no go.
More heat, no go.

used a socket + easy out + Breaker bar, and it was hard as a mother fucker to turn… and eventually the socket wall just cracked right down.

So, what’s the solution?
Machine shop?