RE: OEM prop on a PT-38
"Overproping" for most vessels run at displacement speeds is a GREAT idea.
With a Flank of under 10K , the guess is you will cruise at SL (square rt of lwl) times 1.1 for good long range and low fuel use.
This is usually 2 to 4 gph , or 36 to 70 hp at the prop , a long way down from the WOT rating.
FF
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