does this 360 t chain look too loose?

Here are the two options of chains you are looking for.

http://www.summitracing.com/search/department/engines-components/part-type/timing-chain-and-gear-sets/timing-chain-style/double-roller/make/dodge/engine-size/5-9l-360/engine-family/mopar-small-block-la/brand/cloyes-gear/block-align-bored/yes?N=4294949512%2B4294899544%2B4294888705%2B4294951331%2B4294951326%2B4294951325%2B400043%2B4294888168