NEW PRODUCT FROM CHEVROLET PERFORMANCE FOR 2024.
AS OF NOVEMBER 2023 PRICES HAVE NOT BEEN ANNOUNCED. PRICING SHOWN IS AN ESTIMATION.
*PTS WILL HAVE THIS AVAILABLE AS A CONNECT & CRUISE WITH 6L80e 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.
• 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).
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