Building A GM Performance LSX Engine- The New Rodent
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The LS7 heads are masters of airflow, CNC-ported at the factory and flow approximately 350 cfm through 270cc intake ports. The intake valves are titanium and are 2.20 inches in diameter, while the 1.61-inch exhaust valves are sodium-filled. They're all held at a 12-degree angle. View Related Article
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