Chevrolet Performance LS3 6.2L 376 C.I.D 525 HP Crate Engine

525 horsepower of race-bred fury. The Chevrolet Performance LS376/525 is our most powerful naturally aspirated production-based crate engine, purpose-built for no-compromise performance.

At its core sits an aggressive ASA camshaft—the same hydraulic roller developed for circle-track racing—delivering .525-inch lift and 226 degrees intake / 236 degrees exhaust duration at .050-inch. That tight 110-degree lobe separation angle means excellent throttle response and exceptional high-rpm breathing. Pair it with higher-rate valve springs, and you get 525 hp at 6,200 rpm and 486 ft.-lbs. torque at 5,200 rpm.

The foundation is bulletproof: cast-aluminum block with 6-bolt cross-bolted main caps, nodular iron crankshaft, powdered metal connecting rods, and hypereutectic pistons. Aluminum L92-style cylinder heads with 68cc chambers flow premium air into a 10.7:1 compression ratio that demands 92-octane fuel. Cast roller rocker arms on a 1.7:1 ratio complete the valvetrain.

Maximum recommended rpm hits 6,600. The engine ships as a complete long block with EFI intake, fuel rails and injectors, ignition coils, plug wires, spark plugs, oil pump and pan, harmonic balancer, timing cover, and water pump. Internally balanced with 58X reluctor wheel. Ready to bolt into your Camaro, Chevelle, or any resto-mod hungry for serious power.

Specifications:
Power: 525 HP @ 6200 RPM, 486 ft. lbs. of torque @ 5,200 RPM
Displacement: 376 CID, 6.2L
Bore x Stroke: 4.060” x 3.620”
Compression Ratio: 10.7:1
Recommended Fuel: 92 Octane
Block: Cast Aluminum with 6 bolt cross bolted main caps
Crankshaft: Nodular Iron
Connecting Rods: Powdered Metal Steel
Pistons: Hypereutectic Aluminum
Camshaft: Steel Hydraulic Roller Tappet
Cam Lift: .525” Intake / .525” exhaust
Cam Duration @ .050”: 226 deg. Intake / 236 deg. Exhaust
Lobe Separation: 110 Degree
Cylinder Heads: Aluminum L92 style ports
Combustion Chamber: 68cc
Valves: 2.165” Intake/ 1.590” Exhaust
Rocker Arms: Cast Roller Trunnion, 1.7:1 Ratio
Balance: Internal
Reluctor: 58X
Maximum GM Recommended RPM: 6600
GM Recommended Torque Converter Stall 3000-3400

Engine Includes:
• Fully GM assembled long block
• Ignition Coils, Plug Wires and Spark Plugs
• Oil pump, pick-up and Camaro F-Body (12628771) oil pan
• EFI Intake with fuel rails, injectors and throttle body
• Harmonic Balancer
• Front timing cover
• Aluminum Water Pump
• Oil Filter

Recommended torque converter stall: 3,000–3,400 rpm.