{"product_id":"edelbrock-chevy-bb-victor-cnc-dr-17-cylinder-heads-120cc","title":"Edelbrock Chevy BB Victor CNC DR-17 Cylinder Heads - 120cc","description":"\u003cp\u003eEdelbrock Chevy BB Victor CNC DR-17 Cylinder Heads - 120cc\u003c\/p\u003e\n\u003cp\u003eThe Victor CNC DR-17 Oval-Port Cylinder Heads for Big-Block Chevrolet engines (PN 615467) have a larger 120cc combustion chamber designed for large displacement, high-horsepower, naturally aspirated engines running on pump gas. This design allows for a true flat-top piston configuration, promoting greater efficiency and power output. \n\nOffered \"bare,\" these heads feature a 425cc port volume, 2.450\" intake valves, 1.850\" exhaust valves, raised intake and exhaust ports, and a relocated spark plug position. The raised intake and exhaust ports are particularly beneficial in maximizing cylinder fill during the valve opening cycle, while the revised spark plug location ensures a more complete combustion. Combined with optimized valve placement, these improvements result in better airflow, more power, and higher overall engine efficiency.\n\nEach Victor CNC DR-17 cylinder head is cast at Edelbrock's state-of-the-art foundry using premium aluminum alloy and machined in the Edelbrock Race Center in Mooresville, North Carolina. This material undergoes hot isostatic pressing (H.I.P.) to ensure a more stable and dense grain structure, which increases durability and performance. The heads feature large CNC oval ports explicitly designed to maintain high airspeed, contributing to a high torque curve throughout the engine's operating range.\n\nManufactured to the industry's tightest tolerances, these heads come fully CNC-machined, including their ports and combustion chambers. A 17° valve angle is incorporated to improve flow capability, while ductile-iron interlocking valve seats and premium manganese-bronze valve guides ensure long-lasting performance. The valve seat concentricity precision allows a perfect seal, eliminating leak-down and increasing cylinder pressure during operation. These heads are designed to be used with a shaft rocker system and can bolt directly onto standard deck blocks with a tall-deck manifold, but tall deck blocks require intake runner spacers.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cdl\u003e\n\u003cdt\u003eManufacturer part number\u003c\/dt\u003e\n\u003cdd\u003e615467\u003c\/dd\u003e\n\u003cdt\u003eUPC\u003c\/dt\u003e\n\u003cdd\u003e00085347899197\u003c\/dd\u003e\n\u003cdt\u003eShipping weight \u0026amp; size\u003c\/dt\u003e\n\u003cdd\u003e48.25 lb, 26.25 × 11.25 × 8.25 in\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003ch3\u003eNotices\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eNot legal for sale or use in California on pollution-controlled vehicles.\u003c\/li\u003e\n\u003cli\u003eSpecial order item — ships direct from the manufacturer; extended lead times may apply.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Edelbrock","offers":[{"title":"Default Title","offer_id":47451920466108,"sku":"615467","price":3618.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0596\/8766\/5852\/files\/b9db8052c799e1909937c03adbec9f67L.jpg?v=1789075404","url":"https:\/\/bpfauto.com\/products\/edelbrock-chevy-bb-victor-cnc-dr-17-cylinder-heads-120cc","provider":"Andrewtech Automotive","version":"1.0","type":"link"}