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LSX 376

LSX 376 Crate EngineGM’s LSX376 (PN 19171049) is an affordable street performance engine perfect for engine swaps.  It combines the strong economical LSX block with production LS3  high-flow, L92-style cylinder heads, camshaft and forged-aluminum LSX pistons. LSX376-logo valve covers distinguish the new crate engine for added pizazz. When equipped with a production LS3 intake manifold and injection system (not included), the LSX376 produces 450 horsepower and 430 lb-ft of torque. It can also be fitted with a carbureted induction system that can be tuned for greater power. The manifold and carburetor are available from GMPP.

Part number: 19171049
Engine type: LSX Series Gen IV small-block V-8
Displacement: 376ci/6.2L
Bore x stroke: 4.06 x 3.62
Block (P/N 19166454): LSX cast iron with six-bolt, cross-bolted main caps
Crankshaft: nodular iron
Connecting rods: powdered metal
Pistons: forged aluminum
Camshaft type: hydraulic roller
Valve lift: 0.551 intake/0.522 exhaust
Duration (deg @ 0.050 in): 04 intake/211 exhaust
Cylinder heads (P/N 12598594): LS3 rectangular port; as-cast with 68cc chambers
Valve size: 2.16 intake/1.59 exhaust
Compression ratio: 10.7:1:
Rocker arms: investment cast, roller trunnion
Rocker arm ratio: 1.7:1
Recommended fuel: 92 octane
Reluctor wheel: 58X
Balance: internal


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