Home / GM COMPATIBLE-MARINE-383 ci / GM Marine Small Block Compatible 383 c.i. Engine - 405 Horsepower - Long Block
  • GM Marine Small Block Compatible 383 c.i. Engine - 405 Horsepower - Long Block
  • GM Marine Small Block Compatible 383 c.i. Engine - 405 Horsepower - Long Block
  • GM Marine Small Block Compatible 383 c.i. Engine - 405 Horsepower - Long Block
  • GM Marine Small Block Compatible 383 c.i. Engine - 405 Horsepower - Long Block

GM Marine Small Block Compatible 383 c.i. Engine - 405 Horsepower - Long Block

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  • Detail

    Description:

    • Horsepower & Torque: 405 Horsepower / 450 FT LBS
    • Compression Ratio: 9.5:1
    • Cast Iron Heads
    • Hydraulic Roller Cam
    • Cast Crank
    • Hypereutectic Pistons

    Block:

    • BluePrint Engines High Strength Cast Iron Block
    • Square and Parallel Decked
    • Align Honed Main Bearing Bore
    • Cylinders Honed on Computer-Controlled Machine to Within .0002 Straightness and Roundness
    • Cylinders are Sonic Tested for Thickness
    • 4-Bolt Main
    • 4.000" Bore
    • 1-Piece Rear Main Seal
    • Mech Fuel Pump Provision: Yes
    • Passenger Side Dipstick Drilled and Tapped for Clutch Linkage

    Rotating Assembly:

    • Cast Crankshaft
    • 3.750" Stroke
    • OEM Type 5.700" Connecting Rods w/ 150,000 PSI Bolts
    • Hypereutectic Pistons
    • External Front/ External Rear Engine Balance

    Cylinder Heads:

    • Vortec Cast Iron Cylinder Heads
    • 1.94 Intake Valves
    • 1.50 Exhaust Valves
    • Hardened Push Rods
    • Long Slot Rockers with Positive Lock Adjusting Nuts

    Cam Specs:

    • Cam Type: Hydraulic Roller
    • .495 Intake / .502 Exhaust Lift
    • 220 Intake / 224 Exhaust Duration
    • @.050-114 Degree Lobe Separation
    • Using 1.5 Rocker's 

    Also Includes:

    • Marine Intake Manifold
    • Valve Covers
    • Oil Pan

    Notes:

    • This engine is designed for CARBURETED use only. It is NOT for use in any factory fuel injected applications.
    • Replaces Standard Rotation engines only. Not available as reverse rotation.
    • BluePrint Engines recommends the use of a flame arrestor in marine applications and advises checking local laws to ensure compliance with the United States Coast Guard Requirements for Ignition Protection & Fire Resistance.
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