Home / GM COMPATIBLE-LS-376 ci / GM LS Compatible 376 c.i. Pro Series Engine - 525 Horsepower - Base Dressed - BluePrint Engines Calibrated ECU
  • GM LS Compatible 376 c.i. Pro Series Engine - 525 Horsepower - Base Dressed - BluePrint Engines Calibrated ECU
  • GM LS Compatible 376 c.i. Pro Series Engine - 525 Horsepower - Base Dressed - BluePrint Engines Calibrated ECU
  • GM LS Compatible 376 c.i. Pro Series Engine - 525 Horsepower - Base Dressed - BluePrint Engines Calibrated ECU
  • GM LS Compatible 376 c.i. Pro Series Engine - 525 Horsepower - Base Dressed - BluePrint Engines Calibrated ECU

GM LS Compatible 376 c.i. Pro Series Engine - 525 Horsepower - Base Dressed - 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 376 c.i. Pro Series is a street-ready powerhouse built for performance. Delivering a power packed 525 horsepower and 460 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 10.7:1 compression ratio, hydraulic roller cam, hypereutectic pistons, and a nodular iron crankshaft. 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: 525 Horsepower / 460 ft. lbs. Torque
    • Compression Ratio: 10.7:1
    • BluePrint Engines LS3 Aluminum Heads
    • BluePrint Engines Hydraulic Roller Cam
    • BluePrint Engines Hypereutectic Pistons
    • Nodular Iron 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
    • 4.0622" Bore
    • 6-Bolt Main

    Rotating Assembly:

    • Nodular Iron Crankshaft
    • 3.622" Stroke
    • 6.098" Connecting Rods w/ 150,000 PSI Bolts
    • Hypereutectic Pistons
    • Internally Balanced Front and Rear

    Cylinder Heads:

    • BluePrint LS3 Aluminum Cylinder Heads - PS8015
    • 69cc Chamber
    • 2.165" Intake / 1.590" Exhaust Valves
    • 259cc Intake / 102cc Exhaust Runners

    Cam Specs:

    • Hydraulic Roller Cam
    • .612 Intake / .585 Exhaust Lift
    • 225 Intake / 238 Exhaust Duration
    • @.050-113 Degree Lobe Separation

    Ignition Timing:

    • Ignition Timing and Spark Advance are Controlled by BluePrint Engine Calibrated ECU
    • Transmission Controller Required (ECU Does Not Offer Transmission Control)

    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 - BPP81073
    • 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.
    • 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.
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