As the standard engine in the fifth-generation Camaro SS and C6 Corvette, the high-revving, deep-breathing LS3 6.2L is poised to go down in history as one of Chevrolet’s best and most versatile engines.
Modern Muscle The LS3 is filled with components designed for high performance and longevity. The aluminum block is filled with a sturdy reciprocating assembly that combines with L92-type rectangular-port heads to deliver a 10.7:1 compression ratio.
LS3 Tech Specs Part Number: 19434636 Engine Type: LS-Series Gen-IV Small-Block V-8 Displacement (cu. in.): 376 (6.2L) Bore x Stroke (in.): 4.065 x 3.622 (103.25 x 92 mm) Block (P/N 12623967): Cast-aluminum with six-bolt, cross-bolted main caps Crankshaft (P/N 12597569): Nodular iron Connecting Rods (P/N 12607475): Powdered metal Pistons (P/N 19207287): Hypereutectic aluminum Camshaft Type (P/N 12603844): Hydraulic roller Valve Lift (in.): .551 intake / .522 exhaust Camshaft Duration (@.050 in.): 204° intake / 211° exhaust Cylinder Heads (P/N 12629063): Aluminum L92-style port; “as cast” with 68-cc chambers Valve Size (in.): 2.165 intake / 1.590 exhaust Compression Ratio: 10.7:1 Rocker Arms (P/N 12569167 int): Investment-cast, roller trunnion Rocker Arms (P/N 10214664 exh): Investment-cast, roller trunnion Rocker Arm Ratio: 1.7:1 Recommended Fuel: Premium pump Maximum Recommended rpm: 6600 Reluctor Wheel: 58X Balanced: Internal
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