Chevrolet Performance LS3 525 HP Long Block Crate Engine - 525 HP/486 LB-FT - Most Powerful NA 6.2L - ASA Racing Cam

Most Powerful Naturally Aspirated 6.2L Street Engine with Racing ASA Cam

The LS376/525 represents Chevrolet Performance's most powerful naturally aspirated 6.2L street engine, featuring the racing-derived ASA camshaft that transforms the proven LS3 platform into a 525-horsepower powerhouse.

Key Specifications:

• Part Number: 19435104
• Engine Type: LS-Series Gen IV Small-Block V-8
• Displacement: 376 cu in (6.2L)
• Bore x Stroke: 4.065" x 3.622" (103.25 x 92mm)
• Power: 525 horsepower at 6,200 rpm
• Torque: 486 lb-ft at 5,200 rpm
• Compression Ratio: 10.7:1
• Maximum RPM: 6,600 recommended

Racing-Derived ASA Camshaft:

• Aggressive ASA (Automotive Simulation Associates) hydraulic roller camshaft
• Developed for high-rpm circle-track racing applications
• Valve lift: 0.525" intake / 0.525" exhaust
• Duration @ .050": 226° intake / 236° exhaust
• Tight 110-degree lobe separation angle

High-Performance Construction:

• Cast aluminum block with 6-bolt, cross-bolted main caps
• Nodular iron crankshaft
• Powdered metal connecting rods
• Hypereutectic aluminum pistons
• Investment cast roller trunnion rocker arms with 1.7:1 ratio

Advanced Cylinder Heads:

• Aluminum L92-style rectangular-port cylinder heads with 68cc chambers
• Valve sizes: 2.165" intake / 1.590" exhaust
• Excellent throttle response and high-rpm breathing
• Higher-rate valve springs for durability

Installation Requirements:

• Assembly does not include electronics
• Requires LS376/525 Engine Controller Kit P/N 19354332
• Premium pump gasoline recommended (92+ octane)
• Front-end accessories must be obtained separately