horsepower 400HP @ Crankshaft WOT Operating Range 5600-6000 RPM Engine Configuration GM Small Block V-8 Displacement 383 CID / 6.3L Bore 4.030" Stroke 3.750" Compression Ratio 9.6:1 Idle Speed 700 RPM Gasoline 91 Octane Minimum Engine Oil MerCruiser 25W40 Syn Blend Spark Plugs AC-MR43T

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Mercury Remanufacturing 383 MAG Stroker Sterndrive (2015-) Test Video- By
For the full written captain’s report, test and performance data, and more about the 2016 Mercury Remanufacturing 383 MAG Stroker Sterndrive, go to MAG-Stroker-Sterndrive_2016-ref=YT The 932-lb. MerCruiser 383 MAG Stroker develops 350 horsepower and 390 ft-lb. of torque at 3800 rpms. It breathes through a long runner intake manifold with multi-port fuel injection, and is driven by the latest 555 ECM (electronic control module) with SmartCraft. Mercury remanufacturing begins with a thoroughly inspected, used MerCruiser iron 377 MAG block core that gets bored, stroked, machined, and rebuilt with many new and better parts.

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6.3L MerCruiser 383 MAG MPI 350 HP Engine Installation
Michigan Motorz Customer Boat Engine Installation Project Specifications: Boat: 21' SeaRay Original Engine: 5.7L 260HP MerCruiser Carbureted Original Outdrive: Alpha 1 w/ 3 Blade Aluminum Prop Original Top Speed: Around 40 MPH New Engine: 6.3L 383 MAG 350HP MerCruiser Multi-Port Injection New Outdrive: Bravo I w/ 4 Blade Stainless Steel New Top Speed: Over 60 (Speedometer Pegs Out!) Check us out!