You are currently viewing Chevrolet.com (United States). Close this window to stay here or choose another country to see vehicles and services specific to your location.

Continue
Close
Performance Parts LT Engines LS/LSX Engines Small Block Engines Big Block Engines eCrate All Crate Engines Engine & Transmission Packages Racing Engines Transmissions Components Vehicle Upgrades All Parts Where To Buy Owner's Support
A Black and White Checkered Flag Against a Yellow Background in a Circle

Parts intended for competition use only*
A Yellow Triangle with an Exclamation Point in the Center

Proposition 65 Warning*
Chevrolet Performance Parts LS3 Crate Engine

Gen IV LS Power

Gen IV LS Power

Locate a Dealer
A Black and White Checkered Flag Against a Yellow Background in a Circle

Parts intended for competition use only*
A Yellow Triangle with an Exclamation Point in the Center

Proposition 65 Warning*
A Yellow Horsepower Icon

Up to

638 hp

Horsepower*
Two Yellow Gears Slightly Apart with an Arrow Pointing at a Curve from the Left One to the Other

Up to

604 lb.-ft.

Torque*
A Yellow Speedometer Icon

Up to

6,800

Max Rec RPM
A Yellow Displacement Icon

Up to

376 cu. in. (6.2L)

Displacement

LS3 Engines

  • LS3

    The trusted, rugged and reliable choice — with plenty of torque and horsepower.

    Chevrolet Performance Parts LS376/525 Crate Engine

    View LS3

    The trusted, rugged and reliable choice — with plenty of torque and horsepower.

    View LS3

    Tech Specs
    View in 2025 Catalog

    Performance

    Horsepower:

    430 hp @ 5,900 rpm

    Torque:

    425 lb.-ft. @ 4,600 rpm

    Max Rec RPM:

    6,600

    Internal Components

    Crankshaft:

    Nodular iron

    Connecting Rods:

    Powdered metal

    Pistons:

    Hypereutectic aluminum

    Camshaft Type:

    Hydraulic roller

    Rocker Arms:

    Investment-cast, roller trunnion

    Engine Basics

    Part Number:

    19540155

    Engine Type:

    LS-Series Gen-IV Small-Block V-8

    Displacement:

    376 cu. in. (6.2L)

    Block:

    Cast aluminum with 6-bolt, cross-bolted main caps

    Available Build Options:

    Also available in Long Block

    Balanced:

    Internal

    Measurements

    Bore x Stroke:

    4.065 in. x 3.622 in. (103.25 x 92mm)

    Valve Lift (in):

    .551 intake / .522 exhaust

    Camshaft Duration (@.050 in):

    204° intake / 211° exhaust

    Compression Ratio:

    10.7:1

    Rocker Arm Ratio:

    1.7:1

    Cylinder Head and Valves

    Cylinder Heads:

    Aluminum L92-style port; as-cast with 68cc chambers

    Valve Size (in.):

    2.165 intake / 1.590 exhaust

    Fuel and Ignition

    Recommended Fuel:

    Premium pump

    Reluctor Wheel:

    58x

    Show Less

    Locate a Dealer

    Tech Specs

    Performance

    Horsepower:

    430 hp @ 5,900 rpm

    Torque:

    425 lb.-ft. @ 4,600 rpm

    Max Rec RPM:

    6,600

    Engine Basics

    Part Number:

    19540155

    Engine Type:

    LS-Series Gen-IV Small-Block V-8

    Displacement:

    376 cu. in. (6.2L)

    Block:

    Cast aluminum with 6-bolt, cross-bolted main caps

    Available Build Options:

    Also available in Long Block

    Balanced:

    Internal

    Measurements

    Bore x Stroke:

    4.065 in. x 3.622 in. (103.25 x 92mm)

    Valve Lift (in):

    .551 intake / .522 exhaust

    Camshaft Duration (@.050 in):

    204° intake / 211° exhaust

    Compression Ratio:

    10.7:1

    Rocker Arm Ratio:

    1.7:1

    Internal Components

    Crankshaft:

    Nodular iron

    Connecting Rods:

    Powdered metal

    Pistons:

    Hypereutectic aluminum

    Camshaft Type:

    Hydraulic roller

    Rocker Arms:

    Investment-cast, roller trunnion

    Cylinder Head and Valves

    Cylinder Heads:

    Aluminum L92-style port; as-cast with 68cc chambers

    Valve Size (in.):

    2.165 intake / 1.590 exhaust

    Fuel and Ignition

    Recommended Fuel:

    Premium pump

    Reluctor Wheel:

    58x

    View in 2025 Catalog

  • LS364/450

    A popular builder's choice — LS6 camshaft and aluminum cylinder heads.

    Chevrolet Performance Parts LS364/450 Crate Engine

    A popular builder's choice — LS6 camshaft and aluminum cylinder heads.

    Tech Specs
    View in 2025 Catalog

    Performance

    Horsepower:

    452 hp @ 5,600 rpm

    Torque:

    441 lb.-ft. @ 4,800 rpm

    Max Rec RPM:

    6,800

    Internal Components

    Crankshaft:

    Nodular iron

    Connecting Rods:

    Powdered metal

    Pistons:

    Hypereutectic aluminum

    Camshaft Type:

    LS6 hydraulic roller

    Rocker Arms:

    Investment-cast, roller bearing trunnion

    Engine Basics

    Part Number:

    19434650

    Engine Type:

    Performance LQ9 long-block

    Displacement:

    364 cu. in. (6.0L)

    Block:

    Cast iron with 6-bolt block, cross-bolted main caps

    Balanced:

    Internal

    Measurements

    Bore x Stroke:

    4.000 x 3.622 in (101.6 x 92 mm)

    Valve Lift (in):

    .550 intake / .550 exhaust

    Camshaft Duration (@.050 in):

    204° intake / 218° exhaust

    Compression Ratio:

    10.3:1 (nominal)

    Rocker Arm Ratio:

    1.7:1

    Cylinder Head and Valves

    Cylinder Heads:

    LS3 rectangular port; aluminum, as-cast with 68cc chambers

    Valve Size (in.):

    2.165 intake (hollow stem)
    1.590 exhaust (solid stem)

    Fuel and Ignition

    Recommended Fuel:

    Premium pump

    Reluctor Wheel:

    24Xe

    Show Less

    Locate a Dealer

    Tech Specs

    Performance

    Horsepower:

    452 hp @ 5,600 rpm

    Torque:

    441 lb.-ft. @ 4,800 rpm

    Max Rec RPM:

    6,800

    Engine Basics

    Part Number:

    19434650

    Engine Type:

    Performance LQ9 long-block

    Displacement:

    364 cu. in. (6.0L)

    Block:

    Cast iron with 6-bolt block, cross-bolted main caps

    Balanced:

    Internal

    Measurements

    Bore x Stroke:

    4.000 x 3.622 in (101.6 x 92 mm)

    Valve Lift (in):

    .550 intake / .550 exhaust

    Camshaft Duration (@.050 in):

    204° intake / 218° exhaust

    Compression Ratio:

    10.3:1 (nominal)

    Rocker Arm Ratio:

    1.7:1

    Internal Components

    Crankshaft:

    Nodular iron

    Connecting Rods:

    Powdered metal

    Pistons:

    Hypereutectic aluminum

    Camshaft Type:

    LS6 hydraulic roller

    Rocker Arms:

    Investment-cast, roller bearing trunnion

    Cylinder Head and Valves

    Cylinder Heads:

    LS3 rectangular port; aluminum, as-cast with 68cc chambers

    Valve Size (in.):

    2.165 intake (hollow stem)
    1.590 exhaust (solid stem)

    Fuel and Ignition

    Recommended Fuel:

    Premium pump

    Reluctor Wheel:

    24Xe

    View in 2025 Catalog

  • LS376/480

    A hot, racing-inspired camshaft on the LS3 — the best of both worlds.

    Chevrolet Performance Parts LS376/480 Crate Engine

    A hot, racing-inspired camshaft on the LS3 — the best of both worlds.

    Tech Specs
    View in 2025 Catalog

    Performance

    Horsepower:

    495 hp @ 6,200 rpm

    Torque:

    473 lb.-ft. @ 5,000 rpm

    Max Rec RPM:

    6,600

    Internal Components

    Crankshaft:

    Nodular iron

    Connecting Rods:

    Powdered metal

    Pistons:

    Hypereutectic aluminum

    Camshaft Type:

    Hydraulic roller

    Rocker Arms:

    Investment-cast, roller trunnion

    Engine Basics

    Part Number:

    19540156

    Engine Type:

    LS-Series Gen-IV Small-Block V-8

    Displacement:

    376 cu. in. (6.2L)

    Block:

    Cast-aluminum with 6-bolt block, cross-bolted main caps

    Available Build Options:

    Also available in Long Block

    Balanced:

    Internal

    Measurements

    Bore x Stroke:

    4.065 in. x 3.622 in. (103.25 x 92mm)

    Valve Lift (in):

    .525 intake / .525 exhaust

    Camshaft Duration (@.050 in):

    219° intake / 228° exhaust

    Compression Ratio:

    10.7:1

    Rocker Arm Ratio:

    1.7:1

    Cylinder Head and Valves

    Cylinder Heads:

    Aluminum L92-style port; as-cast with 68cc chambers

    Valve Size (in.):

    2.165 intake / 1.590 exhaust

    Fuel and Ignition

    Recommended Fuel:

    Premium pump

    Reluctor Wheel:

    58x

    Show Less

    Locate a Dealer

    Tech Specs

    Performance

    Horsepower:

    495 hp @ 6,200 rpm

    Torque:

    473 lb.-ft. @ 5,000 rpm

    Max Rec RPM:

    6,600

    Engine Basics

    Part Number:

    19540156

    Engine Type:

    LS-Series Gen-IV Small-Block V-8

    Displacement:

    376 cu. in. (6.2L)

    Block:

    Cast-aluminum with 6-bolt block, cross-bolted main caps

    Available Build Options:

    Also available in Long Block

    Balanced:

    Internal

    Measurements

    Bore x Stroke:

    4.065 in. x 3.622 in. (103.25 x 92mm)

    Valve Lift (in):

    .525 intake / .525 exhaust

    Camshaft Duration (@.050 in):

    219° intake / 228° exhaust

    Compression Ratio:

    10.7:1

    Rocker Arm Ratio:

    1.7:1

    Internal Components

    Crankshaft:

    Nodular iron

    Connecting Rods:

    Powdered metal

    Pistons:

    Hypereutectic aluminum

    Camshaft Type:

    Hydraulic roller

    Rocker Arms:

    Investment-cast, roller trunnion

    Cylinder Head and Valves

    Cylinder Heads:

    Aluminum L92-style port; as-cast with 68cc chambers

    Valve Size (in.):

    2.165 intake / 1.590 exhaust

    Fuel and Ignition

    Recommended Fuel:

    Premium pump

    Reluctor Wheel:

    58x

    View in 2025 Catalog

  • LS376/515

    Pure muscle with a proven track record — designed to pair with carburetor models.

    Chevrolet Performance Parts LS376/515 Crate Engine

    Pure muscle with a proven track record — designed to pair with carburetor models.

    Tech Specs
    View in 2025 Catalog

    Performance

    Horsepower:

    533 hp @ 6,600 rpm

    Torque:

    477 lb.-ft. @ 5,200 rpm

    Max Rec RPM:

    6,600

    Internal Components

    Crankshaft:

    Nodular iron

    Connecting Rods:

    Powdered metal

    Pistons:

    Hypereutectic aluminum

    Camshaft Type:

    Hydraulic roller

    Rocker Arms:

    Investment-cast, roller trunnion

    Engine Basics

    Part Number:

    19435102

    Engine Type:

    LS-Series Gen-IV Small-Block V-8

    Displacement:

    376 cu. in. (6.2L)

    Block:

    Cast-aluminum with 6-bolt block, cross-bolted main caps

    Balanced:

    Internal

    Measurements

    Bore x Stroke:

    4.065 in. x 3.622 in.

    Valve Lift (in):

    .525 intake / .525 exhaust

    Camshaft Duration (@.050 in):

    226° intake / 236° exhaust

    Compression Ratio:

    10.7:1

    Rocker Arm Ratio:

    1.7:1

    Cylinder Head and Valves

    Cylinder Heads:

    Aluminum L92-style port; as-cast with 68cc chambers

    Valve Size (in.):

    2.165 intake / 1.590 exhaust

    Fuel and Ignition

    Recommended Fuel:

    Premium pump

    Reluctor Wheel:

    58x

    Show Less

    Locate a Dealer

    Tech Specs

    Performance

    Horsepower:

    533 hp @ 6,600 rpm

    Torque:

    477 lb.-ft. @ 5,200 rpm

    Max Rec RPM:

    6,600

    Engine Basics

    Part Number:

    19435102

    Engine Type:

    LS-Series Gen-IV Small-Block V-8

    Displacement:

    376 cu. in. (6.2L)

    Block:

    Cast-aluminum with 6-bolt block, cross-bolted main caps

    Balanced:

    Internal

    Measurements

    Bore x Stroke: