Discontinued product. Contact dealer for availability.

LS427/570 CRATE ENGINE

LS427/570 CRATE ENGINE

Chevrolet Performance LS427-570 LS Crate Engine

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Offer Valid 1/1/24 to 12/31/24

$250 rebate^* on the purchase of a Chevrolet Performance Transmission within 180 days of the purchase of any Chevrolet Performance Crate Engine^**. Rebate amount dependent on the package purchased.

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PARTS INTENDED FOR COMPETITION USE ONLY.
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More Power, Wet-Sump Oiling for the Race-Bred LS7

Chevrolet Performance’s new LS427/570 builds on the track-bred performance of the LS7 engine and enhances it in two important ways: more power and easier installation. A new, higher-lift camshaft helps it produce 570 horsepower and 540 lb-ft of torque—increases of 65 hp and 70 lb-ft over the production-based LS7 crate engine.

PART NO. 19421004

570 HP @ 6200 RPM

540 LB-FT @ 4800 RPM

Chevrolet Performance L5427-570 LS Crate Engine

Based on the Production LS7 Crate Engine

A new wet-sump oiling system facilitates easier and less costly installation, because the remote oil-tank reservoir for the production-based LS7’s dry-sump system is not required. The engine is now equipped with the popular F-car wet sump oil pan and accompanying LS3 oil pump. The aggressive camshaft calibration in this engine requires the use of LS427/570 Engine Controller and Harness Kit p/n 19420000 (sold separately). Chevrolet Performance recommends 15W50 Mobil 1 engine oil for the LS427/570 engine.

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Installation Guides

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Installation Guides

Chevrolet Performance L5427-570 LS Crate Engine Specs

LS427/570 Tech Specs

Part Number: 19421004
Engine Type: LS-Series Small-Block V-8
Displacement (cu. in.): 427 (7.0L)
Bore x Stroke (in.): 4.125 x 4.000 (101.6 x 92 mm)
Block (P/N 12602689): Cast aluminum block with 6-bolt, cross-bolted main caps
Crankshaft (P/N 12611649): Forged steel
Connecting Rods (P/N 12661677): Forged titanium
Pistons: Hypereutectic aluminum
Camshaft Type (P/N 19419859): Hydraulic roller
Valve Lift (in.): .591 intake/.590 exhaust
Camshaft Duration (@.050 in.): 227º intake/242º exhaust
Camshaft Lobe Separation Angle: 116º
Cylinder Heads: CNC-ported LS7-style ports with 70 cc combustion chambers
Valve Size (in.): 2.200 titanium intake, 1.610 sodium-filled exhaust
Compression Ratio: 11.0:1
Rocker Arms: Investment-cast, roller-bearing trunnion
Rocker Arm Ratio: 1.8:1 (offset intake)
Recommended Fuel: Premium pump
Maximum Recommended RPM: 7000 rpm
Balanced: Internal

Chevrolet Performance Official Motor Oil Mobil 1

Mobil 1 is now The Official Motor Oil of Chevrolet Performance.

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Future GM Technicians Posing for a Picture with Dale Earnhardt Jr.

Bring Us Your Talent

Nobody knows automotive like Dale Earnhardt Jr. — so who better to share advice with aspiring auto techs?

Technician Stories

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The BLOCK

Visit TheBLOCK.com for a behind-the-scenes look at the world of Chevrolet Performance from an enthusiast's point of view.

Learn More

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Unless specifically noted to the contrary herein, vehicles equipped with Chevrolet Performance parts that are emissions-related may not meet U.S., Canadian, and state and provincial laws and regulations relating to motor-vehicle emissions. These parts are designed and intended for use in vehicles operated exclusively for competition: in racing or organized competition on courses separate from public streets or highways. Visit www.chevroletperformance.com/emissions for more details.

Unless specifically noted to the contrary herein, vehicles equipped with Chevrolet Performance parts that are emissions-related may not meet U.S., Canadian, and state and provincial laws and regulations relating to motor-vehicle emissions. These parts are designed and intended for use in vehicles operated exclusively for competition: in racing or organized competition on courses separate from public streets or highways. Visit www.chevroletperformance.com/emissions for more details.