Removing stuck pistons/rods

What is the best way to remove pistons and rods from an engine that is seized from sitting? I have a 383 that I want to tear down but save the rods for possible future use. Is there a way to do this without damaging the rods? Thanks.

soak the piston holes with brake fluid... KRIOL or Marvel Mystery oil works well to but is more expensive...

Is the crank in there too ?

Yes, crank still installed. Last time I tried this on an engine I banged up a couple of rods and nicked the crank. Is there a way to break the pistons to release the pins without hurting the block or rods?

So you are not saving the crank?

I must be a terrible communicator. I have a 383 with the pistons stuck on the rods, in the cylinders, crank is still installed. I'll call it a shortblock. I want to tear the engine down while saving the rods, crank, and block. Last time I tried this on a 440, the pins were seized in the pistons, and the rods wouldn't pivot on the pins, which will not allow the piston to be pushed/driven up into the cylinders. I bent up a couple of rods and nicked the crank. Thought maybe someone on here would have the answer, short of hot-wrenching the rods. Anyone?? Bueller?? Thanks

Just clarify what choo want .....

Do you have an engine stand that will rotate ?

KRIOL will do the trick spray the top and left it soak in.Then do it from the bottom.Couple times a day for a few days.Be patient.A few hits with a deadblow hammer on the pistons should finish loosening them.You may need to sleeve a few holes if they are rusted too bad.