Are you using a synthetic oil? Many of the synthetics will not stick to engine parts after sitting for a long time. It results in dry engine starts.
With all the mechanical load a hemi has up top, I'd expect problems to arise with poor oiling.

I agree with priming the oil with the covers off to see what's going on.

We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind.
- Stu Harmon