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  1. #1
    Charter Member #232 Charter Member Audiofn's Avatar
    My Boats:
    1979 Formula 302, 99 Formula 353, 81 Donzi 18 2+3 with 454
    Join Date
    Oct 2000
    Carlisle, MA USA

    Is this a serial number for a Big Block?

    5686722 Thanks for any help

    Put your best foot forward!

  2. #2
    Join Date
    Nov 2003
    Rainbow City, Alabama

    Re: Is this a serial number for a Big Block?

    here is a useful link to casting numbers for BIG & small blocks & head numbers, tells you valve sizes, chamber, CC's, original applications, but no serial #'s, sorry.

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