340’s early on used the small primary TQ. Maybe I he first year or two 360, maybe. I’d have to revisit some last homework I did.
All big blocks got the large primary TQ’s.
The earliest 330’s used a commonly rated 600 carb. I called the old Federal Mogul tech line in which they told me the small AVS around on 330’s and 383’s are a 630 cfm carb.
