I was able to get the crank, flywheel, and clutch out of a stuck 235 by pulling the crankshaft timing gear, the main and rod caps. I was then able to pull the crank out with my engine hoist and some blocks.

I was then able to drive the pistons and rods out individually using a large brass punch on the pin bosses of the pistons. One was stuck enough that I had to destroy it, cutting thru the ring lands with a sawzall.

Pulling the crank timing gear off will cause the camshaft to turn a bit because of the helical gears, so be sure the lifters aren't also frozen in their bores.

Your engine doesn't look as badly stuck as the one I had.
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Kevin
1951 Chevy 3100 work truck
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1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car)
Busting rust since the mid-60's
If you're smart enough to take it apart, you darn well better be smart enough to put it back together.