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Old 09-25-2020, 11:35 AM   #1
Join Date: Apr 2016
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Default 1996 27 scr recommended props?

hi everyone, I have a 1996 27scr wth 2 4.3 220hp carb. engines, what's the recommended size of props?, currently its on 17p and at 3500 only tops 20.

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Old 09-25-2020, 12:04 PM   #2
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Join Date: Feb 2012
Location: Essex, Maryland
Posts: 8,218

So you have 4bbl carbs on those 4.3’s? Most came with 2bbl and are rated at 190 HP. What is the current WOT these engines can achieve? Alpha 1 Gen 2 drives? Prop diameter? No marine growth on the bottom? Have you tried Quicksilvers prop calculator to see what it recommends? How long have you owned this boat and has it always performed the same?
1997 2400 SCR
5.7 Vortec / Bravo 2
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