I went and looked back at the dyno sheet I was shown for the 589.

There is a VE number on the sheet, so there was an air turbine being used, but no column for air flow on the sheet I have....... so that data is just on another page.

The VE shown for peak hp(5500rpm) is 102.9%.
The VE shown at the end of the pull(6000rpm) is 96.8%.

Since we know the displacement, the rpm, and the VE..... we can calculate the air flow.

102.8% @5500 for 589” is 964.5cfm
96.8% @6000 for 589” is 989.8cfm

This probably won’t agree 100% with the air flow numbers on the sheet, since there are some calculations in the software to convert to standard cfm........ but it should be pretty close.
My recollection is, on the sheet from SF, the “VE” is a corrected number, and the air flow is uncorrected(raw).

On the street 572 here, the cfm column shows 959cfm, but the calculated cfm based off the VE number is 976cfm.