383 MAG Stroker Inboard 350HP

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30.00 (in)
22.00 (in)
32.00 (in)
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Thanks to it's size and power this is the ideal replacement engine for 350 MAG, 7.4L, and 7.4L MPI engines that power twin engine cruisers and single engine tow boats

  • Dry Joint Exhaust
  • 3-Year Factory Backed Limited Warranty


Power 350 HP (261 kW)
Full Throttle Range 4600-5000 RPM
Displacement 383 CID (6.3L)
Engine Type Remanufactured GM V8 Marine Iron Block & Gen+ Heads
Bore & Stroke 4.030" x 3.750" (102mm x 95mm)
Compression Ratio 9.0:1 with Hypereutectic Pistons
Rocker Arm Ratio 1.6:1 Full Roller
Fuel Requirement 87 Octane (R+M)/2
Fuel System MPI with Gen 3 Cool Fuel
Induction System 2-piece Long Runner Intake with 75mm Thottle Body
Control System ECM 555 with SmartCraft CAN Capability
Ignition System Crank-fired High Voltage Switch w/Knock Control & Platinum Plugs
Charging System 65 Amp / 917 Watt Alternator
Water Drain System Multi-Point Drain - Hand Removable Blue Drain Plugs
Exhaust System Iron Manifold with Dry-Joint Exhaust Elbow
Cooling System Full closed cooling - 160 F
Accessory Drive System Serpentine Belt
Lubrication System High Flow Oil Pump
Reccomended Engine Oil SAE 25-40 NMMA Certified FC-W Synthetic Blend
Audio Warning System Oil Pressure, Coolant Temperature, Drive Lube, Water Pressure
Compatible Transmissions ZF 63A, ZF 63IV, ZF 63C, VD 72C, VD 5000A, VD 5000V
Dimensions (LxWxH) 32" x 30" x 22" (814mm x 740mm x 559mm)
Engine Weight (lbs./kg) 932 / 423
Optional Fresh Water Cooling Dealer Installed Kit
Boat Harness Type 14-pin