LSX 376-B15 (6.2L) Engine Sale!

LSX376-B15 (6.2L) Engine

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The LSX376-B15 is equipped with high-flow LSX-LS3 rectangular-port cylinder heads featuring 6-bolt attachment for maximum sealing under pressure. This combination delivers an exceptional platform for both supercharged and turbocharged applications. Its all-forged rotating assembly is designed to handle up to 15 pounds of boost, offering the strength and reliability demanded by high-output builds. Rated at 473 horsepower and 444 lb-ft of torque in naturally aspirated form, this engine has far greater potential once boosted.

Each assembly ships without an intake manifold or front-end accessories, giving you the freedom to configure the induction, fuel, and cooling systems specifically for your forced-induction design.

All horsepower and torque figures are based on naturally aspirated testing with a production-style fuel injection system. Actual output will vary depending on your chosen supercharger or turbocharger configuration.

Technical Specifications: 

Part Numbers: 19332320 / 19355575 / 19417356 (Newest Revision)
Engine Type: LSX-Series Gen IV Small-Block V8
Displacement: 376 cubic inches (6.2 liters)
Bore x Stroke: 4.065 x 3.622 inches (103.25 x 92 mm)
Block: LSX cast-iron with 6-bolt, cross-bolted main caps
Crankshaft: Forged steel
Connecting Rods: Forged powdered metal
Pistons: Forged aluminum
Camshaft Type: Hydraulic roller
Valve Lift: 0.560" intake / 0.555" exhaust
Camshaft Duration (@0.050"): 210° intake / 230° exhaust
Cylinder Heads: LSX-LS3 rectangular-port with “as-cast” 68cc chambers and 6-bolt attachment
Valve Size: 2.160" intake / 1.550" exhaust
Compression Ratio: 9.0:1
Rocker Arms (Intake): Investment-cast, roller trunnion (P/N 12669995)
Rocker Arms (Exhaust): Investment-cast, roller trunnion (P/N 12669993)
Rocker Arm Ratio: 1.7:1
Reluctor Wheel: 58x
Balance Type: Internal
Recommended Fuel: Regular pump gasoline
Maximum Recommended RPM: 6,600
Recommended Max Boost: 15 psi

Installation Notes:

• Assembly does not include electronics
• Intended for pre-1976 street vehicles or any off-road vehicle
• Not designed for marine applications
• Requires LSX Ignition Controller (P/N 19171130) for carbureted setups
• LSX 8-bolt crank flange
• Ships without intake manifold or oil pan (dust shield installed for shipment)
• California Proposition 65 Warning applies