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
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