what I need to know is if I can install a junction box in my ceiling, crawl space, so I extend the existing wiring for the range to the new location.
Generally, yes. I would put the jbox flush and accessible
, behind a cabinet instead of in the crawl space. If you have aluminum SE cable, use polaris connectors for your splice connections.
You will not have an existing 4 wire cable (1972) but in my area we are allowed to extend/relocate existing circuits.
To do it right (100% code compliant) a new 4 wire cable should be installed back to the panel. You will also need to change the existing receptacle, the cord on the range and disconnect the factory bonding strap.