LSX 376
GM'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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