I used to loosen stuck heads on Flathead Ford V-8's by backing the head bolts up about 2 turns, and starting the engine. Goose the throttle a couple of times, and the head was easy to remove after that!
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!