A 327 and a 350 share the same bore diameter (4.00"), but the stroke of the crankshaft is different.
If you put 327 pistons on a 350 crankshaft it would put the piston 1/4" out of the hole at TDC.
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.
Putting a 327 crank in a 350 makes it a 327. (3.25") You can't put a 327 crank into a 350 without changing the pistons. The piston would be 1/4" down in the hole, and would have very little compression.
NO they are to big.
A small block 350 cc engine will not fit a 2005 Impala, but a 327 one will.
A 350 block with a 327 crank is called a 327. Bore it 60 over and it becomes a 337. Don't know what pop up heads are. Never heard of that.
Yes it will, if the 350 intake is from a pre-1987 engine.
Yes it will, if the 350 intake is from a pre-1987 engine.
yes
have the cylinders bored .030" oversize and fit it with new pistons.
All the dimensions are the same, but it should be re-balanced for the lighter pistons.
No, 350 has a substantially larger bore.
No. Standard 350 engines have 4.00" pistons, standard 400 pistons are 4.125".