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Chevrolet Performance Parts LT1 Crate Engine

Next-Gen Small-Block

Hear It Roar

Locate a Dealer

Parts intended for competition use only*

Proposition 65 Warning*

Up to

455 hp

Horsepower*

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

Up to

455 lb.-ft.

Torque*

Up to

6,600

Max Recommended RPM

Up to

376 cu. in. (6.2L)

Displacement

LT1 Engines

LT1

Hear It Roar

View Engine

Old-school muscle with a high-tech heart transplant for balanced power.

Hear It Roar

View Engine

Old-school muscle with a high-tech heart transplant for balanced power.

Tech Specs

View in 2026 Catalog

Performance

Horsepower:

455 hp @ 6,000 rpm*

Torque:

455 lb.-ft. @ 4,400 rpm*

Max Rec RPM:

6,600

Internal Components

Crankshaft:

Forged steel

Connecting Rods:

Forged powdered metal

Pistons:

Hypereutectic aluminum

Camshaft Type:

Billet steel roller

Rocker Arms:

Investment-cast, roller bearing trunnion

Engine Basics

Part Number:

19431953

Engine Type:

Direct Injection spark-ignition Gen-V Small-Block V8

Displacement:

376 cu. in. (6.2L)

Block:

Cast aluminum with 6-bolt nodular iron main bearing caps

Balanced:

Internal

Measurements

Bore x Stroke:

(103.25 mm x 92 mm) 4.065 x 3.622

Valve Lift (in):

0.550 intake / 0.522 exhaust

Camshaft Duration (@0.050 in):

200 intake / 206 exhaust

Compression Ratio:

11.5:1

Rocker Arm Ratio:

1.81:1

Cylinder Head and Valves

Cylinder Heads:

Aluminum rectangular port D/I

Valve Size (in.):

2.130 intake / 1.590 exhaust

Fuel and Ignition

Recommended Fuel:

Premium pump

Reluctor Wheel:

58x

Show Less

Locate a Dealer

Tech Specs

Performance

Horsepower:

455 hp @ 6,000 rpm*

Torque:

455 lb.-ft. @ 4,400 rpm*

Max Rec RPM:

6,600

Engines Basics

Part Number:

19431953

Engine Type:

Direct Injection spark-ignition Gen-V Small-Block V8

Displacement:

376 cu. in. (6.2L)

Block:

Cast aluminum with 6-bolt nodular iron main bearing caps

Balanced:

Internal

Measurements

Bore x Stroke:

4.065 in. x 3.622 in.

Valve Lift (in):

0.550 intake / 0.522 exhaust

Camshaft Duration (@ 0.050 in):

200 intake / 206 exhaust

Block:

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

Compression Ratio:

11.5:1

Rocker Arm Ratio:

1.81:1

Internal Components

Crankshaft:

Forged steel

Connecting Rods:

Forged powdered metal

Pistons:

Hypereutectic aluminum

Camshaft Type:

Billet steel roller

Rocker Arms:

Investment-cast, roller bearing trunnion

Fuel and Ignition

Recommended Fuel:

Premium pump

Reluctor Wheel:

58x

View in 2026 Catalog
LT1 E-ROD

View Engine

All the power of the LT1 in a street-legal package.

View Engine

All the power of the LT1 in a street-legal package.

Tech Specs

View in 2026 Catalog

Performance

Horsepower:

455 hp @ 6,000 rpm*

Torque:

455 lb.-ft. @ 4,400 rpm*

Max Rec RPM:

6,600

Internal Components

Crankshaft:

Forged steel

Connecting Rods:

Forged powdered metal

Pistons:

Hypereutectic aluminum

Camshaft Type:

Billet steel roller

Rocker Arms:

Investment-cast, roller bearing trunnion

Engine Basics

Part Number:

19431953

Engine Type:

Direct Injection spark-ignition Gen-V Small-Block V8

Displacement:

376 cu. in. (6.2L)

Block:

Cast aluminum with 6-bolt nodular iron main bearing caps

Balanced:

Internal

Measurements

Bore x Stroke:

(103.25 mm x 92 mm) 4.065 x 3.622

Valve Lift (in):

0.550 intake / 0.522 exhaust

Camshaft Duration (@0.050 in):

200 intake / 206 exhaust

Compression Ratio:

11.5:1

Rocker Arm Ratio:

1.81:1

Cylinder Head and Valves

Cylinder Heads:

Aluminum rectangular port D/I

Valve Size (in.):

2.130 intake / 1.590 exhaust

Fuel and Ignition

Recommended Fuel:

Premium pump

Reluctor Wheel:

58x

Show Less

Locate a Dealer

Tech Specs

Performance

Horsepower:

455 hp @ 6,000 rpm*

Torque:

455 lb.-ft. @ 4,400 rpm*

Max Rec RPM:

6,600

Engines Basics

Part Number:

19431953

Engine Type:

Direct Injection spark-ignition Gen-V Small-Block V8

Displacement:

376 cu. in. (6.2L)

Block:

Cast aluminum with 6-bolt nodular iron main bearing caps

Balanced:

Internal

Measurements

Bore x Stroke:

4.065 in. x 3.622 in.

Valve Lift (in):

0.550 intake / 0.522 exhaust

Camshaft Duration (@ 0.050 in):

242° intake / 244° exhaust

Compression Ratio:

11.5:1

Rocker Arm Ratio:

1.81:1

Internal Components

Crankshaft:

Forged steel

Connecting Rods:

Forged powdered metal

Camshaft Type:

Billet steel roller

Rocker Arms:

Investment-cast, roller bearing trunnion

Cylinder Head and Valves

Cylinder Heads:

Aluminum rectangular port D/I

Valve Size (in.):

2.130 intake / 1.590 exhaust

Fuel and Ignition

Recommended Fuel:

Premium pump

Reluctor Wheel:

58x

View in 2026 Catalog

LT1 Engine Custom Builds

#LSSWAPTHEWORLD

Inspired builders and their LT1-powered projects.

_“

It’s classic . . . with that modern drivetrain in an old truck.”

Shay Brummer

1955 Chevrolet First Series Pickup

_“

This car has stood the test of time.” 

Barry Blomquist

1964 Corvette Stingray

_“

It was kind of a no-brainer to have a . . . more modern motor in it.”

Jamison & Lauren Johnson

1967 Chevelle Malibu

A Man and a Woman Stand Smiling in Front of a Chevy Car During Sunset

#/#

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

2025 HOT ROD Power Tour

Chevy Performance cruises the Heartland for 31st annual high-performance road trip

Two Rows of Chevy Vehicles on a Racing Track

Close Up of an Orange ZZ632/1000 Crate Engine

Aerial View of Chevrolet Performance Display

Front Left View of Black 1973 Chevelle Laguna

Front Left View of 1978 K10 Chevy Silverado

Front Left View of Grey 1988 Monte Carlo SS

Explore the Event

Engine & Transmission Packages

Factory-matched Connect & Cruise* engine-and-transmission combinations that deliver.

Learn More

"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 LT1 models.

LT1 Engine Control Module

LT1 Engine Control Module

LT1 Wet Sump Hydraulic Power Steering Kit

LT1 Wet Sump Hydraulic Power Steering Kit

See All Components
SuperMatic® 4L70-E 4-Speed Automatic

SuperMatic® 6L80-E 6-Speed Automatic

SuperMatic® 8L90-E 8-Speed Automatic

See All Transmissions