9 fin to 7 fin changeover - NCRS Discussion Boards

9 fin to 7 fin changeover

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  • Garry Barnes
    #1

    9 fin to 7 fin changeover

    When did GM switch from 9 fin aluminum valve covers to 7 fin aluminum valve covers? More specifically, would a very early '57 (production of October '56) 270hp have 9's or 7's? Thanks.
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    • Wayne P.
      Extremely Frequent Poster
      • August 31, 1975
      • 1025
      #2
      NINE *NM*

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        • Mike M.
          NCRS Past President
          • May 31, 1974
          • 8365
          #3
          Re: 9 fin to 7 fin changeover

          agree with wayne. 9 fin, low script for an early non-base 57 vette. mike
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            • Garry Barnes
              #4
              Re: 9 fin to 7 fin changeover

              Thanks guys!
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