BluePrint Engines MBP3830CTC - 383 CID GM Marine Small Block Compatible Dressed Longblock w/ Carb - 405HP

Horsepower 405HP Torque 450FT/LBS Compression Ratio 9.5 to 1 Block 4 bolt main, 1 piece rear main seal Pistons Hypereutectic Rotating Assembly Steel Crank - 3.75 in. Stroke and 5.7 in. Rods Heads Cast iron Vortec Camshaft Specs Hyd Roller, .495 Int / .502 Exh and 220 Int / 224 Exh dur @ .050, 114 LSA Upgrade your boat's performance with this powerful BluePrint Engines marine crate engine, delivering 405 horsepower and 450 ft. lbs. of torque. This engine is specifically designed for carbureted marine applications, providing a significant boost in power for your vessel. Key Features: Increased Power: 405 Horsepower / 450 ft. lbs. Torque 9.5:1 Compression BluePrint High Strength Cast Iron Block (4-Bolt Main, Precision Machined) Cast Crankshaft (3.750" Stroke) Hypereutectic Pistons Vortec Cast Iron Cylinder Heads (1.94" Intake/1.50" Exhaust Valves) Hydraulic Roller Cam (.495" Intake/.502" Exhaust Lift, 220/224 Duration @.050-114° Lobe Separation) Marine Intake Manifold Marine Carburetor (Brand may vary due to supply) Distributor Oil Pan Valve Covers Enhanced Marine Performance: This engine is designed exclusively for carbureted marine setups, offering a noticeable increase in power compared to lower horsepower options. It features a robust BluePrint cast iron block, hypereutectic pistons, and Vortec cylinder heads for reliable performance in the demanding marine environment. The included marine intake manifold and carburetor are optimized for marine use. Important 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 strongly 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.