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Chevrolet Performance LS3 6.2L 376ci/430HP Engine

Chevrolet Performance
Chevrolet Performance LS3 6.2L 376ci/430HP Engine

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The Chevrolet Performance LS3 6.2L 376ci/430HP Engine began with the 2008 Corvette. A continuation of the industry leading V8 engines from GM Powertrain, the LS3 kicks out 430 horsepower and 424 ft/lbs torque (in the Corvette, those numbers go to 436 HP and 428 ft/lbs torque with the optional dual mode exhaust system). It's a brute of a small block with 376 cubic inches just waiting for you.

The LS series of engines from Chevrolet Performance have broken new ground for efficiency and performance from a pushrod platform engine. The LS3 continues the engineering breakthroughs with revised cylinder heads featuring rectangle ports borrowed from the vaunted LS7. The heads feature 63 cc combustion chambers, 2.16-inch intake valves and 1.59-inch exhaust valves. The camshaft features an aggressive .551-inches of lift on the intake side with less overlap (than the LS2) for even greater airflow and power. Rocker arms with a 1.7:1 ratio sit on top of the heads.

In the bottom end, the aluminum 6-bolts/main block features 4.06-inch bores and 3.62-inch stroke. A nodular iron crankshaft, powdered metal rods, and aluminum pistons (10.7:1 compression ratio) round out a rev-happy short block. Red line for the LS3 comes at 6600 RPM, and you will get there very quickly!

Jegs Easy Kits are designed by the experts at JEGS to ensure quick and easy installation!

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LS3 Engine

LS3 376/430 6.2L Gen IV Engine
  • 430 HP at 5900 RPM
  • 424 ft/lbs TQ at 4600 RPM
  • Intended for pre-1976 street vehicles or any off-road
  • NOT intended for Marine Applications
  • $6,234.99
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