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

Block:

• New BluePrint 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" 
• 1-Piece Rear Main Seal
• Mech fuel pump provision: Yes
• Passenger Side Dipstick Drilled and tapped for clutch linkage

Rotating Assembly:

• New Cast steel crankshaft
• 3.750" Stroke
• OEM type 5.700" connecting rods w/ 150,000 psi bolts
• Hypereutectic pistons
• External Front/ External Rear

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: Hyd Roller
• .495 Intake .502 Exhaust
• 220 Intake / 224 Exhaust duration
• @ .050 - 114-degree lobe separation
• Using 1.5 rockers 

Also Includes:

• Marine intake manifold
• Valve covers
• Oil pan

Notes:

• 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.