yes.
Yes.
no.
yes
If it's a 350 from a Chevy, yes.
Yes you can, but a 350 is a small block, not a big block.
No the 350 small block will not bolt up to the 3.1L V6. The 3.1 is a 60 degree block V6 and the 350 is a 90 degree block.
350 Engines dont have transmission fluid. The Transmission does. Start the engine, leave the trans in Park, pull the dipstick and look at it. fill to full mark when the engine is fully warned up
this is a mess of a question and the answer is NO. why? because there was never a big block 350 made by Chevrolet and as far as a short block 350 on the transmission? who cares rather the motor had heads or not (i.e. short block= crate motor sold without heads). if you asked me if a big block Chevy will bolt up to a transmission that came in a vehicle with a small block i would say yes.
yes
yes
1967
TH400 or 4L80E if you want overdrive.