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Engine Chev LS3 6.2L 376ci V8 long engine 495hp at 6200 rpm


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Part No: GM19434646
Engine Chev LS3 6.2L 376ci V8 long engine 495hp at 6200 rpm 473lbs-ft torque at 5000 rpm 10.7:1 comp, LS3 style heads, 58x reluctor GMP19434646
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LS376/480 Long Block 495 HP

THE HOT CAM ADDS HEAT TO THE LS3
GM Performance engineers took their production LS3 6.2L (376 cubic inches) and swapped the stock camshaft for the racing-inspired LS Hot Cam (P/N 88958753), which delivered a stunning 495 horsepower and 473 lb.-ft. of torque. That’s nearly 14 percent more power and torque from a simple camshaft change!

The key to the power boost is the Hot Cam’s 0.525-inch lift on both the intake and exhaust sides, along with 219-degree/228-degree duration specs. That’s less lift on the intake side than the stock LS3 cam, but considerably more duration, allowing the valves to stay open longer to draw in more air from the rectangular-port L92-style heads.

• 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


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