I have quite a few of these carbs collected over the years, most I removed myself (or I knew where they came from), so I can tell you they are not remans or Frankensteins from a parts bin. If I have, for instance a QJ from a ‘70 350 - 300 hp Nova, can it be used in most any Chevy 4 barrel small blocks (in stock configuration) that are before all the crazy add on crap of the later year motors? I’m sure some adjusting/tuning and re-jetting will be needed.
Rich
Rich