Dry sump question

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  • hipower17
    Senior Member
    • Dec 2007
    • 643

    #1

    Dry sump question

    putting a dry sump on a sbc 421, the drive pulley has a 28 tooth pulley this sounds to small for this engine size can someone give info if this needs changed?
  • bullittwrench
    Senior Member
    • May 2007
    • 228

    #2
    My Bert has a 21 on the flywheel and 40 on the pump.

    Comment

    • keeks
      Senior Member
      • Oct 2008
      • 687

      #3
      I've always gone 1:2 ratio.

      Comment

      • perfconn
        Senior Member
        • May 2007
        • 3573

        #4
        40 on the pump is the right pulley

        Comment

        • hipower17
          Senior Member
          • Dec 2007
          • 643

          #5
          thanks guys for the info

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