No it is not.
no
They are both the same engines. You refer to a long block as being a compleat engine assy. 350 small block is what it means. It's a 350 and that is called a small block.
yes, a 305 and 350 utilize the same block
NO......
Yes their the same block....
The later 327's were exactly the same as the early 350's, so yes, a 350 crankshaft will fit a 327 block if it's a 1967 and up block.
usually
NO the bore / cylinder size is different. Pluse the stroke
there is no such thing as a big block 350
There is no such thing as a big block 350.
YES it is the same block YES it is the same block