I see this is your second post here, welcome to the Ford Barn.
We need more information. Flathead V8s with different oil pans and bell housing types from all sorts of years get swapped into other old Fords. We need to know what family of engine and what type of oil pan you are working with before we can answer your question.
If you are working on a 38 or 39 engine with the one piece oil pan then you will have to remove the complete oil pan to pull the flywheel.
I can't answer your question if you are working with an early type engine with the big truck removable bell housing area, I haven't worked on one of those.
If you are working on an 8BA type engine then you pull the bell housing off the back of the block.