seized slant six

Dealt with this on a 65 V-8 that had been left outside with the intake manifold off, and facing up. After pulling the heads and trying everything suggested (ATF, brake fluid, kerosine, WD40, ...) for 2 weeks and periodically working on it, I got frustrated and beat the pistons out with a wood block and sledge-hammer. Messed a few up, which is a shame since the rare HiPo pistons. I should have waited 1 yr and beat on them a couple times a week, since the engine has been sitting since. Anyway std pistons aren't much value today unless one finds a pristine block or sleeves all cylinders.