Home / GM COMPATIBLE-LS-427 ci / GM LS Compatible 427 c.i. Pro Series Engine - 600 Horsepower - Deluxe Dressed - Polished Pulley Kit - BluePrint Engines Calibrated ECU
  • GM LS Compatible 427 c.i. Pro Series Engine - 600 Horsepower - Deluxe Dressed - Polished Pulley Kit - BluePrint Engines Calibrated ECU
  • GM LS Compatible 427 c.i. Pro Series Engine - 600 Horsepower - Deluxe Dressed - Polished Pulley Kit - BluePrint Engines Calibrated ECU
  • GM LS Compatible 427 c.i. Pro Series Engine - 600 Horsepower - Deluxe Dressed - Polished Pulley Kit - BluePrint Engines Calibrated ECU
  • GM LS Compatible 427 c.i. Pro Series Engine - 600 Horsepower - Deluxe Dressed - Polished Pulley Kit - BluePrint Engines Calibrated ECU
  • GM LS Compatible 427 c.i. Pro Series Engine - 600 Horsepower - Deluxe Dressed - Polished Pulley Kit - BluePrint Engines Calibrated ECU

GM LS Compatible 427 c.i. Pro Series Engine - 600 Horsepower - Deluxe Dressed - Polished Pulley Kit - BluePrint Engines Calibrated ECU

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    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 polished 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:

    • Polished Front Accessory Drive with Water Pump, Alternator, Power Steering Pump, A/C Compressor, all Belts and Pulleys
    • 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

    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.
     
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