Overview:

The LS-compatible layout has become a favorite for its rock-solid reliability and proven track record, this BluePrint 427 c.i. Pro Series is a street-ready powerhouse built for performance. Delivering a power packed 600 horsepower and 530 ft-lbs of torque, this popular LS-compatible engine is perfect for restomods, street machines, and pro-touring builds. At its core is a high-strength BluePrint cast iron block with LSX-style features—thicker decks, reinforced webbing, and extended cylinder skirts for added durability. It's topped with LS3-style aluminum heads, a 11:1 compression ratio, hydraulic roller cam, forged pistons, and a forged crankshaft. The deluxe dressed package includes a black serpentine front drive kit, BluePrint Engines Fabbed Aluminum Intake Manifold, BluePrint Engines Calibrated ECU and harness, drive-by-wire throttle pedal, sensors, and throttle body—delivering plug-and-play performance right out of the box.

Description: 

• Horsepower & Torque: 600 Horsepower / 530 ft. lbs. Torque
• Compression Ratio: 11:1
• BluePrint Engine LS3 Aluminum Heads
• BluePrint Engine Hydraulic Roller Cam
• BluePrint Engine Forged Crank
• BluePrint Engine Forged Pistons
  

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 Separate
  

Ignition Timing:

• ECM Supplied with Calibration
• Not Capable of Transmission Control
• Transmission Controller Required
  

Also Includes:

• LS3 Fabricated Aluminum Intake Manifold - BPP822112
• BluePrint Engines Complete Harness and ECU Kit
• Drive by Wire Throttle Body - BPP12191019
• LS Swap Oil Pan - BPP81074
• Water Pump - BPPLS126WP
• Injectors and Fuel Rail Kit
  
• Spark Plugs and Wires
  
• Harmonic Balancer 
  
• Throttle Pedal
  
• Timing Cover
• Valve Covers
• Coil Packs
• Black Pulley Kit
  
  • LS2 Style Water Pump
  • 1- Wire 140amp Alternator
  • Peanut Style Air Conditioning Compressor
  • Type II Power Steering Pump with Remote Reservoir

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.
  
• The Included BluePrint Engines LS controller package contains a fully tested, calibrated, locked ECU, optimized for this specific engine. This package has undergone extensive testing for performance, reliability and the safety of you and your engine.
• The front accessory drive on this engine fits many vehicles, however it is the customer responsibility to accurately measure and confirm fitment.  Note this is a low-profile design, but things such as power steering hoses, alternator wiring, and additional fittings/fabrication may be required on some vehicles.