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Outdrive Gera Ratio 1988 Ciers sunbridge 28.5-gctid394575

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    Outdrive Gera Ratio 1988 Ciers sunbridge 28.5-gctid394575

    Anyone know what the correct outdrive gear ratio should be in a 1988 Ciera Sunbridge 28.3 5.7 350 GM ?

    Thanks

    #2
    IF it were a Volvo SP then the 1.61 ratio. If a DuoProp (Volvo) then a 1.95 ration with that engine. We need to know what type outdrive it is to be able to give an opinion.
    Tony, Cape Cod, MA
    Vice Commodore Bourne Yacht Club
    1994 Carver 390 Cockpit Motor Yacht
    454 Merc Cruisers inboards
    "HOLODECK"
    2014 10' hard bottomed Dink powered by 3.3HP Mariner 2 stroke
    www.bourneyachtclub.com

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      #3
      tonyiiiafl wrote:
      IF it were a Volvo SP then the 1.61 ratio. If a DuoProp (Volvo) then a 1.95 ration with that engine. We need to know what type outdrive it is to be able to give an opinion.
      Sorry I neglected to include that. Its a OMC Cobra. I went to Brunswick and they advised it is 1.5 to 1

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        #4
        '88 OMC 5.7's were 1.41. 5.0L's were 1.50.

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