LS3 430 HP

Description

LS3 430HP – GM PERFORMANCE MOTOR
A Contemporary Classic
The Chevrolet Performance LS3 6.2L stands as one of the most iconic and versatile performance engines ever built—offering an exceptional blend of modern engineering, reliability, and raw power. Delivering 430 horsepower and 425 lb-ft of torque, this 376-cubic-inch powerhouse brings legendary LS performance to any project.
Inside, the LS3 features a durable reciprocating assembly, L92-style rectangular-port aluminum heads, and a high-lift hydraulic roller camshaft. These components work together to enhance airflow and produce a broad, responsive torque curve that performs exceptionally across the RPM range.
Each LS3 crate engine arrives fully dressed and ready for installation, complete with:

Camaro F-body oil pan

Intake manifold assembly with injectors and throttle body

Water pump

Harmonic balancer

58X reluctor wheel

Complete ignition system
Note: The included F-body oil pan may not fit all vehicles. For older or non-LS platforms, a Muscle Car Oil Pan Kit (P/N 19212593) or a vehicle-specific oil pan is recommended.
TECH SPECS
Part Numbers: 19432414 / 19434636Engine Type: LS-Series Gen IV Small-Block V-8Displacement: 376 cu in (6.2L)Bore x Stroke: 4.065 x 3.622 in (103.25 x 92 mm)Block (P/N 12623967): Cast aluminum with 6-bolt, cross-bolted main capsCrankshaft (P/N 12597569): Nodular ironConnecting Rods (P/N 12649190): Powdered metalPistons (P/N 19207287): Hypereutectic aluminumCamshaft (P/N 12623063): Hydraulic rollerValve Lift: 0.551 in (intake) / 0.522 in (exhaust)Camshaft Duration (@.050 in): 204° intake / 211° exhaustCylinder Heads (P/N 12629063): Aluminum L92-style, 68cc chambersValve Size: 2.165 in intake / 1.590 in exhaustCompression Ratio: 10.7:1Rocker Arms (Int. P/N 12669995 / Exh. P/N 12669993): Investment-cast, roller trunnionRocker Arm Ratio: 1.7:1Recommended Fuel: Premium pumpMax Recommended RPM: 6,600Reluctor Wheel: 58XBalanced: Internal
INSTALLATION NOTES

Assembly does not include electronics

Requires LS3 Controller Kit (P/N 19354328) for engine operation

Includes electronic throttle pedal required for ECU throttle input

Includes Chevy F-Body wet sump oil pan

Intended for pre-1976 street vehicles or off-road use

Not for marine applications

Front-End Accessory Drive Kits available in multiple configurations