{"product_id":"180cc-eliminator-sbc-bare-cylinder-heads","title":"180cc Eliminator SBC Bare Cylinder Heads","description":"The AFR 180cc \"Street\" Eliminator SBC Bare Cylinder Heads (MPN: AFR 0918NP) offer a significant performance enhancement over re-worked factory heads at a competitive price point. Constructed from A356 aluminum castings, these heads boast 100% CNC ported intake, exhaust, and combustion chambers for optimal airflow. They are engineered for street, towing, or street\/strip applications, supporting engine displacements up to 383 cubic inches and operating effectively up to 6000 RPM.\n\nThese cylinder heads meet emissions standards for 1994 and older vehicles under CARB EO #D-250-2. They feature a choice of 65cc or 75cc combustion chambers and a 64cc exhaust port. With a 3\/4\" thick head deck, they are well-suited for demanding applications like nitrous or blower setups. The design includes standard 2.020\" intake and 1.600\" exhaust valves with AFR's hardened ductile iron interlocking valve seats. The 23° valve angle and standard valve spacing make them an excellent choice for 1955-86 327 to 350 cid engines. For 1987 to present engines with center bolt valve covers and specific intake bolt configurations, AFR Part #0919 is available.\n\nKey specifications include a 180cc intake port volume, a 4.000\" minimum bore diameter requirement, and a .750\" deck thickness. The valve cover bolt pattern is the standard perimeter bolt type, and the valve angle is 23°. The valve spring pocket diameter is 1.460\" O.D., with a maximum machining capability of 1.750\" O.D. Note that angle mills may necessitate a .120\" thick intake gasket. The heads come bare, requiring separate purchase of all necessary components.","brand":"AFR","offers":[{"title":"Default Title","offer_id":52686844920120,"sku":"AFR 0918NP","price":1875.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/661164671.webp?v=1784877435","url":"https:\/\/store.motormia.co\/products\/180cc-eliminator-sbc-bare-cylinder-heads","provider":"MOTORMIA","version":"1.0","type":"link"}