Overview:

The LS-compatible platform is the king of street machines—and this BluePrint Engines 427 C.I. Pro Series monster proves why. Unleash raw, LS-powered fury with a street-scorching 605 horsepower and 565 ft-lbs of torque. This beast has BluePrint aluminum heads, a hydraulic roller cam, and hypereutectic pistons, and modular iron crankshaft, all locked into a high-strength LSX-style cast iron block. 

Description: 

• Horsepower & Torque: 605 Horsepower / 565 ft. lbs. Torque
• Compression Ratio: 11:1
• BluePrint Engines LS3 Aluminum Heads
• BluePrint Engines Hydraulic Roller Cam
• BluePrint Engines Forged Pistons
• BluePrint Engines Forged Crankshaft

Block:

• BluePrint Engines High Strength Cast Iron (LSX Style) Block 
• Increased Deck Thickness and Strength Webbing
• Utilizes OEM LS3 Front and Rear Covers
• Improved Water Jacket Design
• Extended Cylinder Skirt
• 1-piece Rear Main Seal
  
• Priority Main Oiling
• 4.0685" Bore
  
• 6-bolt Main
  

Rotating Assembly:

• Forged Crankshaft
• 4.125" Stroke
• Forged 6.125" Connecting Rods
• Forged Pistons
• Internally Balanced Front and Rear

Cylinder Heads:

• BluePrint Aluminum Cylinder Heads -PS8015
• 69cc Chamber
• 2.165" Intake / 1.590" Exhaust Valves
• 259cc Intake / 102cc Exhaust Runners

Cam Specs:

• Hydraulic Roller
• .624 intake / .624 Exhaust Lift
• 239 Intake / 255 Exhaust Duration
• @.050-114 Degree Lobe Separation

Also Includes:

• This engine does NOT come with a Fuel Injection ECU and Wiring Harness
• Harmonic Balancer
• Valve Covers
• LS Swap Oil Pan
• Timing Cover
  

Notes:

• This engine requires a non-weighted flex plate/flywheel.
• Recommended Fuel: 91 Octane
• BluePrint Engines recommends a 2200+ RPM stall converter.
• Retro fit oil pan will fit most 1955-1995 GM front engine, RWD, V8 cars
• Not for use in pollution-controlled vehicles or in dry sump applications.