does this 360 t chain look too loose?

It does seem a little 'loose' for a new chain, has the block been align bored, if so you may have to get a 'align bored' timing set to suit the situation you have there.

Block has been bored .030. Help me understand the details supporting you align bored statement as do not clearly understand.

Do they make tensioner for my LA360 that may clear up this condition?