19171049 LSX376-B8

Part Number: 19171049

Retail Price: $7,420.31
Your Price: $5,907.28
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Part Number: 19171049
Engine Type: LSX-Series G en IV Small-Block V-8
Displacement (cu in): 376 cu in (6.2L)
Bore x Stroke (in): 4.065 x 3.622 (103.25 x 92 mm)
Block (P/N 19244055): LSX cast-iron with 6-bolt,
cross-bolted main caps
Crankshaft (P/N 12597569): Nodular iron
Connecting Rods (P/N 12607475): Powdered metal
Pistons (P/N 19244016): Forged aluminum
Camshaft Type (P/N 12603844): Hydraulic roller
Valve Lift (in): 0.551" intake / 0.522" exhaust
Camshaft Duration (@0.050 in): 204° intake / 211° exhaust
Cylinder Heads (P/N 12615879): LS3 rectangular port; with
“as cast” 68cc chambers
Valve Size (in): 2.160 intake / 1.590 exhaust
Compression ratio: 9:1
Rocker Arms (P/N 12569167 int): Investment-cast, roll trunnion
Rocker Arms (P/N 10214664 exh): Investment-cast, roll trunnion
Rocker Arm Ratio: 1.7:1
Recommended Fuel: 87 octane
Maximum Recommended RPM: 6,600
Reluctor Wheel: 58X
Balanced: Internal

General Motors Warranty Information

Select the parts below to finish your crate engine and get running in less time!

19299055 SuperMatic™ 4L70-E Four-Speed Automatic Transmission

19212657 Transmission Controller

19244035 LSX-LS3 Single-Plane Standard Deck 4-bbl Manifold

19244037 LSX-LS3 Dual-Plane Standard Deck 4-bbl Manifold

19212593 Muscle Car Oil Pan Kit

12638197 LS3 Intake Manifold Assembly


• Assembly does not include any electronics
• Intended for pre-1976 street vehicles or any off-road vehicle
• Not intended for marine applications
• Requires LSX Ignition Controller P/N 19171130 for carbureted applications
• Standard LS 6-bolt crank flange
• Assembly shipped without intake manifold or oil pan (dust shield installed for shipment)
• Recommended max boost - 8 PSI