Sonny's 820 cid EFI Marine Engine - Engine Builder Magazine
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Sonny’s 820 cid EFI Marine Engine

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This 820 cubic inch marine engine is designed and built by Sonny’s Racing Engines for endurance boat applications. Using a billet aluminum block with 360-degree water jackets and 5.3-inch bore spacing hemispherical cylinder heads, find out why this engine is one of our Engine of the Week highlights. Engine of the Week is brought to you by: PennGrade https://www.penngrade.com/ Scat Crankshafts https://www.scatscrankshafts.com/ Elring https://www.elring.com/en/

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