Sealed Crate Engine Communication
News travels fast and so do we. Make sure you sign up to keep up with all the latest from Sealed Crate Engine Communications.
More Power from Our Largest Displacement LT Engines!
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.
PART NO. 19435523
523 HP@ 5,800 rpm
543 LB/FT @ 4,600 rpm
A Winning Combination
A Corvette camshaft and the big-displacement l*T 6.6L truck engine combine for great LT performance and strength.
By combining the large-displacement and heavy-duty elements of the L8T 6.6L engine and a unique camshaft based off the Corvette Stingray’s high-revving LT2 V-8, Chevrolet Performance have created the all-new L8P Performance crate engine.
TRANSMISSION OPTIONS
Connect & Cruise Powertrain System
Connect & Cruise Crate Powertrain Systems provide factory-matched engine-and-transmission combinations that include specially calibrated controllers and wire harnesses designed for retrofit installations in older vehicles.
†Must be purchased from a participating U.S. dealer or Chevrolet Performance Authorized Reseller. Mail-in rebate offer not available with other offers. See gmpartsrebates.com for details, applicable rebate amounts, and rebate form. Rebates must be submitted by 1/31/25. Rebates may be submitted over two invoices within 120 days of each other. Allow 6 to 8 weeks for delivery of debit card. Offer valid 1/1/24 - 12/31/24.
††Unless specifically noted to the contrary herein, vehicles equipped with Chevrolet Performance parts that are emissions-related may not meet U.S., Canadian, and state and provincial laws and regulations relating to motor-vehicle emissions. These parts are designed and intended for use in vehicles operated exclusively for competition: in racing or organized competition on courses separate from public roads, streets, or highways. Visit www.chevroletperformance.com/emissions for more details.
Installation Guides
Find everything from vital data about your engine’s capabilities to how to install it into your build.
L8P Tech Specs
- Part Number: 19435523
- Engine Type: Gen V Small Block V-8 direct injection spark ignition
- Displacement (cu. in./L): 400 (6.6L)
- Bore x Stroke (in/mm): 4.065 x 3.860 (103.25 mm x 98 mm)
- Block (P/N 19420904): Cast-iron with six-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 (@.050 in.): 218° intake / 231° exhaust
- Cylinder Heads (P/N 12736192): Aluminum rectangular port D/I with 59.02cc chambers
- Valve Size (in.): 2.130 hollow intake / 1.590 sodium filled 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 Unleaded – 91 (R+M)/2
- Ignition system: Coil-on-plug
- Maximum Recommended rpm: 6000 rpm
- Reluctor wheel: 58X
- Balanced: Internal
Mobil 1 is now The Official Motor Oil of Chevrolet Performance.