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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 engineers have created the all-new L8P 400 c.i.d. Performance crate engine. Rated at 523 hp and 543 lbs.-ft. of torque, it offers your project a unique and naturally aspirated combination of big-displacement torque and high-rpm horsepower. The L8T 6.6L foundation is the same high-strength, big-displacement engine found in the Silverado HD from 2020 to present day, featuring a forged steel crankshaft and high-strength components. Additional features such as oil-spray cooling for the pistons and a cast iron, long-skirt cylinder block with 6-bolt, cross-bolted main caps contribute to the engine's strength and durability. The new L8P builds on that with a unique, upgraded valvetrain featuring performance-oriented valves and springs, along with a unique camshaft that is based off the Corvette Stingray's LT2 engine. It has a non-active fuel management profile and more duration than the L8t's camshaft. It's the best of both engines: the largest displacement in the LT family and the power-building attributes of the Corvette camshaft. Put it to work in your project. Fast Facts: * Displacement: 400 cu. in. (6.6L) * Bore x Stroke: 4.06 in. x 3.86 in. * Crankshaft: Forged steel * Pistons: Hypereutectic aluminum * Compression ratio: 10.8:1 * Cylinder heads: Rectangular port D/I with 59.02cc chambers * Camshaft type: Billet steel hydraulic roller * Camshaft duration: 218 degree intake/231 degree exhaust at .050 in. * Fuel delivery: Direct injection with high-pressure pump * Horsepower: 523 at 5,800 rpm * Torque (lbs.-ft.): 543 at 4,800 rpm * Engine type: Gen V small block V-8 direct injection spark ignition * Block: Cast iron with 6-bolt no Dula main bearing caps * Connecting rods: Forged powder-metal * Valve lift (in.): 0.549 intake / 0.549 exhaust * Rocker arms: Investment cast roller trunnion * Rocker arm ratio: 1.8:1 * Intake manifold: Composite * Throttle body: 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: 6,000 rpm * Reluctor wheel: 58X * Balanced: Internal * Note: Use with the new engine control kit, P/N 19435524, which includes a programmed controller, wire harness, pedal, oxygen sensors and mounts, MAD, fuel line pressure sensor and fuel pump power module. Flexplate P/N 12685003 must be purchased for these engines to be compatible with the 10-speed supermatic transmission. 10-speed supermatic transmission uses six bolts to attach the torque converter.
Not Yet Reviewed
$8,948.80
You can now get modern street performance in a classic small block package by installing a Chevrolet Performance SP350 turnkey long block crate engine. They put out 357 HP with loads of low-end torque. In fact, the engines produce 400 lbs.-ft. of torque for a thrilling feeling of immediate performance. Additional features and specs of the Chevrolet Performance SP350 turn-key crate engine: * Forged steel crankshaft * Powdered metal connecting rods * Cast aluminum pistons (9.0:1 compression ratio) * Hydraulic roller camshaft: .473 intake/.473 exhaust lift, 215 intake/223 exhaust duration at 0.050 in. * 1.5 ratio stamped steel rocker arms * Externally balanced * 32 degree total timing at 4,000 RPM * Aluminum intake manifold * Chevrolet Performance valve covers * HEI distributor * Spark plugs * Water pump * Harmonic balancer * Timing cover * Oil pan * Flexplate: 153-tooth, 12.750 in. diameter * Starter * Fuel pump * Air conditioning pump * Alternator * Front-end accessory drive kit (not installed)
Not Yet Reviewed
$8,932.78
You can now get modern street performance in a classic small block package by installing a Chevrolet Performance SP350 385 HP turn-key crate engine. They put out 385 HP and 405 lbs.-ft. of torque for a thrilling feeling of immediate performance. The long block crate engines feature new lightweight aluminum cylinder heads based on the proven Fast Burn design—with large intake runners, and 2 in. diameter intake and 1.55 in. exhaust valves. New beehive-style valve springs enable greater high-rpm performance and durability—as the egg-shaped springs have less reciprocating mass in motion, require less spring pressure for greater valve control, and handle valvetrain stresses more efficiently. Additional features and specs of the Chevrolet Performance SP350 turn-key crate engine: * Forged steel crankshaft * Powdered metal connecting rods * Hypereutectic pistons (9.6:1 compression ratio) * Hydraulic roller camshaft: .474 intake/.510 exhaust lift, 208 intake/221 exhaust duration at 0.050 in. * 1.5 ratio stamped steel rocker arms * Externally balanced * 36 degree total timing at 4,000 RPM * Aluminum intake manifold * Chevrolet Performance valve covers * HEI distributor * Spark plugs * Water pump * Harmonic balancer * Timing cover * Oil pan * Flexplate: 153-tooth, 12.750 in. diameter * Starter * Fuel pump * Air conditioning pump * Alternator * Front-end accessory drive kit (not installed)
Not Yet Reviewed
$12,667.94
Here, at last, is the king of all big block crate engines from Chevrolet Performance. These 502 cu. in. engines are available unassembled or fully assembled. Each version makes extensive use of aluminum to keep weight down—including aluminum heads, intake, water pump, and valve covers. Additionally, ZZ502 c.i.d. deluxe long block crate engines are full of heavy-duty parts, such as: forged aluminum pistons, forged shot-peened steel connecting rods with 7/16 in. bolts, forged steel crankshaft, 14 in. automatic transmission flexplate, 4-bolt main blocks, stainless steel valves, 6 qt. oil pan, and windage trays. The complete Chevrolet Performance engine kits come with Gen 6 four-bolt main blocks with one-piece rear main seals. Hydraulic roller camshaft specs are: .527 in. intake lift, .544 in. exhaust lift; the duration at .050 in. for intake is 224, and 234 for exhaust with a 112-degree lobe centerline. Other features include a single roller timing chain, aluminum large oval port, and 110cc combustion chambered heads. Intake runner volume is 290cc; stainless steel valves are installed, with 2.25 in. intake side and 1.88 in. on the exhaust side. Valve springs are rated at 140 lbs. closed and 368 lbs. open, good for up to .680 in. lift. These heads have exhaust crossovers. Aluminum high-rise dual-plane square bore bolt pattern intake manifolds and an 870 cfm carburetor are also included.
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$14,846.00
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