LS3 430 HP

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 / 19434636
Engine Type: LS-Series Gen IV Small-Block V-8
Displacement: 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 caps
Crankshaft (P/N 12597569): Nodular iron
Connecting Rods (P/N 12649190): Powdered metal
Pistons (P/N 19207287): Hypereutectic aluminum
Camshaft (P/N 12623063): Hydraulic roller
Valve Lift: 0.551 in (intake) / 0.522 in (exhaust)
Camshaft Duration (@.050 in): 204° intake / 211° exhaust
Cylinder Heads (P/N 12629063): Aluminum L92-style, 68cc chambers
Valve Size: 2.165 in intake / 1.590 in exhaust
Compression Ratio: 10.7:1
Rocker Arms (Int. P/N 12669995 / Exh. P/N 12669993): Investment-cast, roller trunnion
Rocker Arm Ratio: 1.7:1
Recommended Fuel: Premium pump
Max Recommended RPM: 6,600
Reluctor Wheel: 58X
Balanced: 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