L8P 523hp 6.6L Crate Engine by Chevrolet Performance - 19435523

NOW AVAILABLE!   *WE HAVE THIS AVAILABLE AS A CONNECT & CRUISE WITH 6L80e 2WD AND 4WD, OR WE CAN PAIR WITH A TKX OR T56 MAGNUM! _______________________ More Power from GM's Largest Displacement LT Engine!We’ve optimized every cubic inch of our largest-displacement LT engine with the unique L8P performance crate engine. With 523 horsepower and 543 lb.-ft. of torque, this package combines the displacement and heavy-duty strength of our production-based L8T 6.6L engine plus a unique camshaft based off the LT2. It’s all rooted in the tough foundation of the L8T, with a forged steel crankshaft, high-strength parts, high-flow heads and composite intake manifold. We then add a more performance-oriented valvetrain, including valves, springs, and an LT2-based camshaft. It features more lift and duration to help draw more air and fuel into the engine, which helps build power. Our L8P crate engine package comes complete from the throttle body to the oil pan, including the PCV tube, evap tube, oil dipstick, oil fill tube and cap. It does not include the controller, harness, oxygen sensors or a Front End Accessory Drive system. See Installation Notes below for recommendations. INSTALLATION NOTES:• Engine is shipped with high-pressure direct-injection fuel pump installed• Front End Accessory Drive system must be ordered separately and includes hydraulic power steering, with center pulley. Pulley-mounted fan not recommended• Use Front End Accessory Drive system P/N 19433745 for applications with air conditioning and Front End Accessory Drive system P/N 19433746 for applications without air conditioning • Includes 8-bolt flexplate for automatic transmissions• Use with Engine Control kit 19435524 (must use 6L80-E transmission).   TECH SPECS Part Number: 19435523 Engine Type: Gen V Small Block V-8 direct injection spark ignition Displacement (cu in): 400 (6.6L) Bore x Stroke (in / mm): 4.060 x 3.860 (103.25 mm x 98 mm) Block (P/N 19420904): Cast iron with 6-bolt nodular main bearing caps Crankshaft (P/N 12708884): Forged steel Connecting Rods (P/N 12675746): Forged powder-metal Pistons (P/N 12737834-R, 12737835-L): Hypereutectic aluminum Camshaft Type (P/N 12736191): Billet steel hydraulic roller Valve Lift (in): 0.549 intake / 0.549 exhaust Camshaft Duration (@ 0.050 in): 218º intake / 231º exhaust Cylinder Heads (P/N 12736192): Aluminum rectangular port D/I with 59.02cc chambers Valve Size (in): 2.130 hollow intake / 1.590 inconel exhaust Compression Ratio: 10.8:1 (nominal) Rocker Arms (P/N 12619829): Investment cast roller trunnion Rocker Arm Ratio: 1.8:1 Intake manifold (P/N 12639087): Composite Throttle body (P/N 12730580): 87mm diameter (single-bore) Fuel delivery: High-pressure direct injection (2,175 psi / 150 bar) Recommended Fuel: Premium pump Ignition system: Coil-on-plug Maximum Recommended RPM: 6000 rpm Reluctor wheel: 58X Balanced: Internal