{"product_id":"big-victor-498cc-cnc-12-degree-2-500-x-1-800","title":"Big Victor 498cc CNC 12 Degree 2.500\" X 1.800\"","description":"Edelbrock introduces its new Big Vic CNC 12-degree race head, specifically designed for maximum competition naturally aspirated, nitrous injected, and boosted applications. The Big Vic 12 is cast in the USA at Edelbrock's state-of-the-art foundry, using a premium aluminum alloy that undergoes hot isostatic pressing for a more stable and dense grain structure. The large CNC oval ports and 2.500 x 1.800 valve job are specifically designed to maintain high airspeed for maximum cylinder fill during valve opening and generate a high torque curve throughout the engine's operating range. Manufactured with premium materials and machined to the industry's tightest tolerances, these heads feature a 12-degree valve angle, copper valve seats, and fully CNC-machined 498cc ports and 82cc chambers to increase overall airflow capability. The premium manganese bronze valve guides withstand long wear with emphasis placed on holding precise tolerances on valve seat concentricity, allowing the valves to seal securely to eliminate leak-down and increase cylinder pressures during engine operation.\r\n\u003cb\u003eVehicle Specific\u003c\/b\u003e\r\n\u003cul\u003e\r\n\u003cli\u003eMark IV BBC 4.840\" Bore Space 500ci to 638ci Race Applications, Naturally Asperated, Forced Induction and Nitrous Injected.\u003c\/li\u003e\r\n\r\n\u003c\/ul\u003e\r\n\u003ch3\u003eAttributes:\u003c\/h3\u003e\r\n\u003cp\u003e\u003c\/p\u003e\u003cul\u003e\r\n\u003cli\u003e\n\u003cb\u003eBrand Name: \u003c\/b\u003eEdelbrock\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eGTIN: \u003c\/b\u003e00085347897476\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eCNC Machined Combustion Chamber: \u003c\/b\u003eYes\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eCNC Machined Exhaust Port: \u003c\/b\u003eYes\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eCNC Machined Intake Port: \u003c\/b\u003eYes\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eCombustion Chamber Volume: \u003c\/b\u003e82cc with Conical Design and Titanium valves\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eCylinder Head Style: \u003c\/b\u003eBare\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eExhaust Port Location: \u003c\/b\u003eRaised _x000D_\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eExhaust Port Shape: \u003c\/b\u003eD Port\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eExhaust Valve Job Diameter: \u003c\/b\u003e1.800\"\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eExhaust Valve Stem Diameter: \u003c\/b\u003e11\/32\"\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eGuide Plates Included: \u003c\/b\u003eNo\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eIntake Port Location: \u003c\/b\u003eRaised and Spread\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eIntake Port Shape: \u003c\/b\u003eOval\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eIntake Runner Volume: \u003c\/b\u003e498\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eIntake Valve Job Diameter: \u003c\/b\u003e2.500\"\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eIntake Valve Stem Diameter: \u003c\/b\u003e11\/32\"\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eMaterial: \u003c\/b\u003eAluminum\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eQuantity: \u003c\/b\u003eSingle\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eRocker Arm Studs Included: \u003c\/b\u003eNo\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eSpark Plug Style: \u003c\/b\u003e14mm Gasket Seat .750\" reach\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eSteam Holes Drilled: \u003c\/b\u003eYes\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eValve Angle: \u003c\/b\u003e12\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eValve Cover Mounting Style: \u003c\/b\u003eBBC\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eValve Guide Inside Diameter: \u003c\/b\u003e11\/32\"\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eValve Guide Material: \u003c\/b\u003eMag Bronze\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eValve Guide Size Outside Diameter: \u003c\/b\u003e0.502\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eValve Spring Type: \u003c\/b\u003eBare\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\r\n\u003ch3\u003eExtended Information:\u003c\/h3\u003e\r\n\u003cp\u003e\u003c\/p\u003e\u003cul\u003e\r\n\u003cli\u003e\n\u003cb\u003eCountry of Origin: \u003c\/b\u003eUS\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eEmissions : \u003c\/b\u003eEPA Eligible\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\r\n\u003ch3\u003ePacking Information:\u003c\/h3\u003e\r\n\u003cp\u003e\u003c\/p\u003e\u003cul\u003e\r\n\u003cli\u003e\n\u003cb\u003eQuantity of Each: \u003c\/b\u003e1\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003ePackage UOM: \u003c\/b\u003eEA\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eDimension: \u003c\/b\u003e26 x 11 x 9.5 inches\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eWeight: \u003c\/b\u003e43.4 POUNDS\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\r\n\u003cdiv id=\"sema-product-fitment\" class=\"product__accordion accordion fitment\"\u003e\u003c\/div\u003e","brand":"Edelbrock","offers":[{"title":"Default Title","offer_id":44336463085613,"sku":"BDVJ-618270","price":9859.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0646\/2780\/2157\/files\/618270_v1.jpg?v=1762922583","url":"https:\/\/montgomeryparts.com\/products\/big-victor-498cc-cnc-12-degree-2-500-x-1-800","provider":"Montgomery Parts","version":"1.0","type":"link"}