BluePrint Engines MBP3830CT - 383 CID GM Marine Small Block Compatible Longblock - 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 Power your boat with this robust BluePrint Engines marine crate engine, delivering 405 horsepower and 450 ft. lbs. of torque. This engine is specifically designed for carbureted marine applications, providing reliable power and performance for your vessel. Key Features: 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 OEM Type 5.700" Connecting Rods w/ 150,000 PSI Bolts 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 using 1.5 Rockers) Marine Intake Manifold Valve Covers Oil Pan Built for Carbureted Marine Environments: This engine is designed exclusively for carbureted marine setups. It features a robust BluePrint cast iron block, hypereutectic pistons, and Vortec cylinder heads for reliable performance in demanding marine conditions. The included marine intake manifold is specifically designed for marine applications. 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.