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

That's interesting. I would have argued that the 650 number was maybe someone misreading it (6 does look like 8). I've always heard of them as rated at 800 and 850 cfm.

Looking at the list of TQ numbers, it does appear that the later E58 motors did get the smaller (1 3/8" primary) TQ, so that would match up.
i think it's a matter of some pendant pushing their glasses up on their nose and saying: well actually it's flow and rating are two different things

and then that just became what was published. or they just installed a limiter on the air door because the feds were putting the screws to them.