Did the 1979 Lil Red Express come with an air pump?

Those specs say .484 lift.
I suppose someoen could have taken the duration spec and assumed it was a typo.

The exhaust (or both for single pattern) duration and lift in 000/000 format was a popular format for describing a cam profile back then.

The 284/484 cam was pretty popular from DC/MP.
It had a pretty lopey/choppy idle in my 383.
The DC/MP 280/480 cam was even more lopey/choppy in my friend's 340.
WAY more so than any LRE I've ever heard.