Hi I run a 78 Sceptre in the middle Chesapeake bay and is pretty much unmolested. The engine is a 350 marine power transmission is newer but same gear ratio. I have trim tabs and have no issues with trim I am able to trim the boat for a comfortable ride in all but the worst sea conditions . It is a great running boat and very dry . The only drawback is speed you will not be able to keep up with the outboards I plane around 15 kts and wot around 32 kts.
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1978 sceptre inboard fwc marine power
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