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348 - 409 Marine question.

Discussion in 'The Hokey Ass Message Board' started by teddyt, Sep 10, 2013.

  1. teddyt
    Joined: Sep 24, 2010
    Posts: 99

    from U.S.

    Were there any companies that made the big marine aluminum timing cover/motor mounts for the Chevy 348 - 409 engine? If so,......anyone have any pics?
  2. Mark Hinds
    Joined: Feb 20, 2009
    Posts: 594

    Mark Hinds
    from pomona ca

    Can't say anything about the front mounts but any rear mount from a chevy small block too a big block will fit. The bell housing bolt patterns are all the same.
  3. PackardV8
    Joined: Jun 7, 2007
    Posts: 890


    We pulled a pair of marine 409"s a while back and they had automotive timing covers.

    The only thing I remember is the Mallory distributors. Only one had a tach drive. Always wondered how they knew how fast the other engine was turning?

    jack vines
  4. flyin-t
    Joined: Dec 29, 2004
    Posts: 1,353


    Nicson made everything needed to convert a W engine for marine use and there's a set of 348/409 exhaust manifolds on ebay right now. At 375 bucks they're a steal.

  5. daliant
    Joined: Nov 25, 2009
    Posts: 684


    You can tell by the sound the engines make and by the amount of vibration, when twin engines are running out of sync you can usually hear and feel a rhythmic hum.
  6. barbara
    Joined: Nov 2, 2009
    Posts: 82

    from wisconsin

    i know this thread is a little old, but to answer your question...yes. cal marine made an aluminum timing chain cover/front motor plate. it had a provision in the front for a cam driven fuel pump or water pump.

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