Description
Crate Engine LS3 6.2L 495 HP Long-Block
Crate Engine – 376 Cubic Inch – 495 HP – LS3 – GM LS-Series
LS376/480 Long Block
LS long-blocks from Chevrolet Performance offer the core capabilities of complete crate engines at a low cost, allowing builders to finish the assembly their way. The LS376/480 long block is delivered without the intake manifold, coil packs, water pump, exhaust manifolds or other accessories.
TECH SPECS
Part Number: 19420384 / 19432424 / 19434646
Engine Type: LS-Series Gen 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 92mm)
Block (P/N 12623967): Cast-aluminum with 6-bolt, cross-bolted main caps
Crankshaft (P/N 12597569): Nodular iron
Connecting Rods (P/N 12649190): Powdered metal
Pistons (P/N 19207287): Hypereutectic aluminum
Camshaft Type (P/N 88958753): Hydraulic roller
Valve Lift (in): .525 intake / .525 exhaust
Camshaft Duration (@.050 in): 219° intake / 228° exhaust
Cylinder Heads (P/N 12629063): Aluminum L92-style port; as cast with 68cc chambers
Valve Size (in): 2.165 intake/ 1.590 exhaust
Compression Ratio: 10.7:1
Rocker Arms (P/N 12669995 int): Investment-cast, roller trunnion
Rocker Arms (P/N 12669993 exh): Investment-cast, roller trunnion
Rocker Arm Ratio: 1.7:1
Recommended Fuel: Premium pump
Maximum Recommended rpm: 6,600
Reluctor Wheel: 58x
Balanced: Internal
INSTALLATION NOTES
• Assembly does not include any electronics, intake manifold, fuel system , ignition coils.
• Includes Chevy F-Body wet sump oil pan
• Intended for pre-1976 street vehicles or any off-road vehicle
• Not intended for marine applications
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