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 LSX Crate Engine

LS with an Iron Block Foundation

LS with an Iron Block Foundation

Hear It Roar
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

627 hp

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

Up to

586 lb.-ft.

Torque*
A Yellow Speedometer Icon

Up to

7,100

Max Rec RPM
A Yellow Displacement Icon

Up to

454 cu. in. (7.4L)

Displacement
A Yellow Horsepower Icon

Up to

627 hp

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

Up to

586 lb.-ft.

Torque*
A Yellow Speedometer Icon

Up to

7,100

Max Rec RPM
A Yellow Displacement Icon

Up to

454 cu. in. (7.4L)

Displacement

LSX Engine

  • LSX376-B15

    Hear It Roar

    View Engine

    The ideal foundation for turbocharged or supercharged combinations.
    Chevrolet Performance Parts LSX Crate Engine

    Hear It Roar

    View Engine

    The ideal foundation for turbocharged or supercharged combinations.
    fpo

    Tech Specs
    View in 2025 Catalog

    Performance

    Horsepower:

    473 hp @ 6,000 rpm

    Torque:

    444 lb.-ft. @ 5,000 rpm

    Max Rec RPM:

    6,600

    Internal Components

    Crankshaft:

    Forged steel

    Connecting Rods:

    Forged powder metal

    Pistons:

    Forged aluminum

    Camshaft Type:

    Hydraulic roller

    Rocker Arms:

    Investment-cast, roller trunnion

    Engine Basics

    Part Number:

    19417356

    Engine Type:

    LSX-Series Gen IV Small-Block V-8

    Displacement:

    376 cu. in. (6.2L)

    Block:

    LSX cast iron with 6-bolt, cross-bolted main caps

    Balanced:

    Internal

    Measurements

    Bore x Stroke:

    4.065 x 3.622 (103.25 x 92 mm)

    Valve Lift (in):

    .560 intake / .555 exhaust

    Camshaft Duration (@ .050 in):

    210° intake / 230° exhaust

    Compression Ratio:

    9.0:1

    Rocker Arm Ratio:

    1.7:1

    Cylinder Head and Valves

    Cylinder Heads:

    LSX-LS3 rectangular port; with “as-cast” 68cc chambers and a 6-bolt attachment

    Valve Size (in.):

    2.160 intake / 1.550 exhaust

    Fuel and Ignition

    Recommended Fuel:

    Regular pump

    Reluctor Wheel:

    58x

    Show Less

    Locate a Dealer

    Tech Specs

    Performance

    Horsepower:

    473 hp @ 6,000 rpm

    Torque:

    444 lb.-ft. @ 5,000 rpm

    Max Rec RPM:

    6,600

    Internal Components

    Crankshaft:

    Forged steel

    Connecting Rods:

    Forged powder metal

    Pistons:

    Forged aluminum

    Camshaft Type:

    Hydraulic roller

    Rocker Arms:

    Investment-cast, roller trunnion

    Engine Basics

    Part Number:

    19417356

    Engine Type:

    LSX-Series Gen IV Small-Block V-8

    Displacement:

    376 cu. in. (6.2L)

    Block:

    LSX cast iron with 6-bolt, cross-bolted main caps

    Balanced:

    Internal

    Cylinder Heads and Valves

    Cylinder Heads:

    LSX-LS3 rectangular port; with “as-cast” 68cc chambers and a 6-bolt attachment

    Valve Size (in.):

    2.160 intake / 1.550 exhaust

    Measurements

    Bore x Stroke:

    4.065 x 3.622 (103.25 x 92 mm)

    Valve Lift (in):

    .560 intake / .555 exhaust

    Camshaft Duration (@.050 in):

    210° intake / 230° exhaust

    Compression Ratio:

    9.0:1

    Rocker Arm Ratio:

    1.7:1

    Fuel and Ignition

    Recommended Fuel:

    Premium pump

    Reluctor Wheel:

    58x

    View in 2025 Catalog

  • LSX454

    View Engine

    Torque like a big block, compact with fiery power from a small block.
    Chevrolet Performance Parts LSX 454 Crate Engine

    View Engine

    Torque like a big block, compact with fiery power from a small block.
    fpo

    Tech Specs
    View in 2025 Catalog

    Performance

    Horsepower:

    627 hp @ 6,300 rpm

    Torque:

    586 lb.-ft. @ 5,100 rpm

    Max Rec RPM:

    7,100

    Internal Components

    Crankshaft:

    4340 forged steel with 8-bolt flange

    Connecting Rods:

    4340 forged steel

    Pistons:

    Forged aluminum

    Camshaft Type:

    Hydraulic roller

    Rocker Arms:

    Investment-cast, roller trunnion

    Engine Basics

    Part Number:

    19417357

    Engine Type:

    LSX-Series Gen IV Small-Block V-8

    Displacement:

    454 cu. in. (7.4L)

    Block:

    LSX cast iron with 6-bolt, cross-bolted main caps

    Balanced:

    Internal

    Measurements

    Bore x Stroke:

    4.185 in. x 4.125 in. (106.3 x 104.8 mm)

    Valve Lift (in):

    .648 intake / .648 exhaust

    Camshaft Duration (@ .050 in):

    236° intake / 246° exhaust

    Compression Ratio:

    11.0:1

    Rocker Arm Ratio:

    1.8:1

    Cylinder Head and Valves

    Cylinder Heads:

    Aluminum LSX-LS7 port; with “as cast” 70cc chambers

    Valve Size (in.):

    2.200 titanium intake / 1.610 hollow, sodium-filled exhaust

    Fuel and Ignition

    Recommended Fuel:

    Premium pump

    Reluctor Wheel:

    58x

    Show Less

    Locate a Dealer

    Tech Specs

    Performance

    Horsepower:

    627 hp @ 6,300 rpm

    Torque:

    586 lb.-ft. @ 5,100 rpm 

    Max Rec RPM:

    7,100 

    Internal Components

    Crankshaft:

    4340 forged steel with 8-bolt flange 

    Connecting Rods:

    4340 forged steel 

    Pistons:

    Forged aluminum

    Camshaft Type:

    Hydraulic roller

    Rocker Arms:

    Investment-cast, roller trunnion

    Engine Basics

    Part Number:

    19417357 

    Engine Type:

    LSX-Series Gen IV Small-Block V-8

    Displacement:

    454 cu. in. (7.4L) 

    Block:

    LSX cast iron with 6-bolt, cross-bolted main caps

    Balanced:

    Internal

    Cylinder Heads and Valves

    Cylinder Heads:

    Aluminum LSX-LS7 port; with “as cast” 70cc chambers 

    Valve Size (in.):

    2.200 titanium intake / 1.610 hollow, sodium-filled exhaust 

    Measurements

    Bore x Stroke:

    4.185 in. x 4.125 in. (106.3 x 104.8 mm) 

    Valve Lift (in):

    .648 intake / .648 exhaust 

    Camshaft Duration (@.050 in):

    236° intake / 246° exhaust 

    Compression Ratio:

    11.0:1

    Rocker Arm Ratio:

    1.8:1

    Fuel and Ignition

    Recommended Fuel:

    Premium pump

    Reluctor Wheel:

    58x

    View in 2025 Catalog

1955 Chevrolet 210 Handyman Wagon

Left Side View of a Grey 1969 Chevy Corevette
6.2 Crate Engine in a Grey Chevy Corvette with the Hood Popped Open
Bird's Eye View of the Steering Wheel of a Classic Chevy Car
Front View of a 1952 Chevy Deluxe Wagon
Close-Up VIew of the Speedometer in a 1952 Chevrolet Deluxe Wagon
Explore Custom Build

1964 Chevy II Nova

Front Right View of a 1964 Chevy Nova II
Bird's Eye View of the B15 Crate Engine in a 1964 Chevy Nova II
Bird's Eye View of the Steering Wheel in a 1964 Chevy Nova II
Front View of a 1964 Chevy Nova II
Close Up View of the Red Interior in a 1964 Chevy Nova II
Explore Custom Build

1965 Chevrolet C10 "Slayer"

Front Right View of a 1965 Chevrolet C10 Slayer
Close Up View of a 1965 Chevrolet C10 Slayer
Close Up View of the Rear Axle on a 1965 Chevrolet C10 Slayer
Front View of a 1965 Chevrolet C10 Slayer
Rear View of a 1965 Chevrolet C10 Slayer
Bird's Eye View of the Hydraulics on a 1965 Chevrolet C10 Slayer
Explore Custom Build

1981 Pontiac Trans Am

Right View of a Yellow 1981 Pontiac Trans Am
Bird's Eye View of the B15 Crate Engine in a Yellow 1981 Pontiact Trans Am
Close Up View of the Steering Wheel in a 1981 Pontiac Trans Am
Aerial View of the Hood of a 1981 Pontiac Trans Am with a Grey Bird Graphic
Bird's Eye View of the Gear Shift in a 1981 Pontiac Trans Am
Explore Custom Build

1987 Chevrolet R10

Front View of a 1987 Chevy R10
Bird's Eye View of an LSX Cast Iron Cylinder Block inside a 1987 Chevy R10
Close Up View of the Cab Inside a 1987 Chevy R10
Front View of a 1987 Chevrolet R10
A 1987 Chevy R10 Racing on a Track
Explore Custom Build
Overhead View of Engineers in White Lab Coats Look at an Engine

Decades of Building Performance

A look back at the LS, LSX, and LT Engine Family Histories.

View Timeline

Featured Event

The Best Engines of Holley LS Fest East 2024
tbd
tbd
tbd
tbd
tbd
View More

Engine & Transmission Packages

Factory-matched Connect & Cruise* engine-and-transmission
combinations that deliver.
Learn More
A Chevrolet Performance Parts Connect and Cruise Powertrain System
A Close-up Photo of Talbert Goldman Wearing Shades and a Baseball Cap

"It simplifies the whole project. If you have any issues, you plug into it, and you work on it and go from there. It makes it so simple."

Talbert Goldman
Mike Goldman Customs

Assemble the Dream Powertrain System

Compatible transmissions and components for LSX models.

Build confidently with Chevrolet Performance installation guides.

LSX376-B15

LSX454

Find dealers ready to help you with Chevrolet Performance Parts.
Locate a Dealer
Exterior View of a Chevrolet Dealership with Classic Chevy Vehicles on Display in the Parking Lot and a Crowd of People
A Simple Black Drawing of an Automobile Engine

Crate
Engines

View All

A Black Drawing of an Open Catalog

2025
Catalog

Discover

A Simple Black Drawing of a Tag with "%" on It

Current
Offers

Browse

A Black "Follow Us" Icon

Follow
Us

Find

Next Up:

Discover

Next Up:

Discover

A Chevrolet Performance SP350/385 Series Crate Engine