No, the 350 refers to the engine's displacement. 350 Cubic Inches Displacement to be exact.
Check for a fuse in fuse block marked gauges.
Visually on the outside. Internal cracks there will almost certainly be a mixing of the oil an coolant one way or the other.
tell me uses of U Block?
there is no such thing as being marked with a curse, this is nonsense and fear mongering.
It will be marked.
It will be marked on the barrel.
What you are asking about is a Model 1885. Depending upon when exactly it was made (the serial number will tell us that), it should be marked either "30 U.S." or "30 ARMY".
Should be marked
No such thing as a 350 big block.
It would have it marked on the front bumper if not you could tell from the manual.
Chrysler 383 is a big block. The Chevy 383, is a de stroked 400, small block.
You can use a thermometer or a weather app on your smartphone to tell the temperature outside.