sorry this post took so long but this work for you it has worked for me lots of times this chart is from edelbrock r&d....TED
volt a/f ratio.[LIST]
.250 15.0:1
  • .375 14.5;1
    • .500 14.0:1
      • .675 13.5:1
        • .750 13.0:1
          • .875 12.5:1
            • 1.000 12.0:1