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    71 OMC Engine Wiring Harness

    Anyone have a wiring diagram for both a OMC 67 120 HP and a 71 OMC 305 V8? I have a 67 harness I need to convert for a 71 Slickcraft with a 350 and the old harness is from a 305 (i think) anyways the old harness is dust and the one for the 67 is all I could find. The plugs fit and the amount of...
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    350 to 305 OMC Head Swap

    is it ok to swap out 350 heads with a 305 head? I know it will bump up the comp a point but will this cause any issues?
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    Cooling & Oil Problems/ Head Gasket ?

    1971 ish 5.7 OMC Electric Shift O/D I took the boat out early last week. While running out in 2 to 4's which can load up and warm an engine at times I paid no mind to a 160 F temp. (I usually read around 130) I smelled oil and noticed some smoke comming from the engine comp.. After raising the...
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    Prop suggestions

    350 cid 260hp OMC<br />Current prop 13x21(I think)<br />4900rpm @ WOT<br />22' deep V fiberglass Approx. 3700lbs.<br />Using smart tabs 129080<br /><br />When the tabs were added the hole shot and planing improved but I did loose some top end. I currently can get mid 30sPH but without the tabs...
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    Noise Suppression

    I just finished installing some new electronics on my boat and things seemed to work well with exception of when I ran above 3,000 RPMs. The fish finder gave irratic readings and the bar to the right was indicating constant clutter as opposed to a mark here & there. I'm figuring it's likely...
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    Buying another boat

    I have had my eye out for a good river boat for Salmon and Steelhead fishing in some of the rivers local to me. I think I've settled on the boat I'm buying. I'm going out fishing with the owner after the holidays to give it a good run and look it over and if all looks good she's mine.<br /><br...
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    Rewiring a boat

    I plan on doing this electrical project this winter. The thing is over the years a lot electronics and lighting have been added to my boat and I want to get away from my old fuse panel (witch is almost impossible to get to easily) and add this breaker panel. <br /><br />...
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    Advice on a scanning Fish finder

    I am considering an Interphase Twinscope for my boat next year. Has anyone ever used one? does anyone have any suggestions on transducers, Thru hull versus transom mount? Are the better scanning FF without breaking the bank? Any information will be helpful.
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    OMC electric shift

    Have a question in regard to winterizing my I/O.<br />I know about the upper & lower, draining the oil, draining and filling the engine/drive with anti freeze. Just one question. On the intermediate housing at the top there is a plug like on my drive except larger. I remove it and there is oil...
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    Advice From the Hull Gurus

    Ok I have a 71 Slickcraft SS232. Overall the boat seems to be in pretty sound shape. Drive (original electric shift) is factory fresh, 350 eng. w/300 hrs on the rebuild runs great.Setup with all the goodies for great lake fishing all custom to this boat. The drawback is I'm starting to notice...
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