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  1. #1

    Default I cannot locate the identification marks on my OMC

    Hi there,

    I recently acquired a boat with an OMC engine. It looks like the valve covers were replaced with something else, I have browsed and browsed but could not find where to look for the Model / Serial numbers of the engine... Here's what I have:

    V8 OMC
    Firing Order: 18436572
    Carb: 2 Jet Rochester
    Stamped on top of the engine : 348260 GM, the number 13 underneath the first set of numbers
    On the drive (OUtside propeller prop) Posted:
    Model N.0 981872
    Serial No. W202671

    I couldn't even find information for the drive!

    How can I identify this engine?

    The boat was made in 1979 but I am unsure that the engine is the original...

  2. #2

    Default Re: I cannot locate the identification marks on my OMC

    FYI - I couldnt' figure out the engine by any serials or numbers, just couldn't find anything. I ended up buying a carb rebuild kit for it and found out that the carb on this motor is only available for the 305 stern drive so I found out for sure that was the engine. It is what I suspected.

    There was water all in it from years of sitting in the weather with the carb open, ouch -- MMM down the cylinders, oil change and new rebuild on the carb should fire her back up! Excited

  3. #3
    Join Date
    Dec 2006
    Location
    Greenfield Me. USA
    Posts
    6,034

    Default Re: I cannot locate the identification marks on my OMC

    There was water all in it from years of sitting in the weather with the carb open,
    Ayuh,..... Good luck with that,.......

    Yer outdrive is the obsolete Stringer drive,...... Good luck with it too,......
    Any Grease is Better,... Than No grease at All....

  4. #4

    Default Re: I cannot locate the identification marks on my OMC

    Hey, how do you know it's the obsolete one? Is it possible to slap a newer 'non-obsolete' out drive on there?

  5. #5
    Join Date
    May 2020
    Location
    Orange County, Califormia
    Posts
    12

    Default Re: I cannot locate the identification marks on my OMC

    The firing order matches a 5.0 L or 5.7 L

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