{"product_id":"afr-205cc-assembled-aluminum-cylinder-heads","title":"AFR 205cc Assembled Aluminum Cylinder Heads","description":"The AFR 1450 cylinder heads are a performance upgrade for 289, 302, and 351W Small Block Ford engines, designed to deliver significant torque and horsepower gains. These heads are constructed from durable A356 aluminum and feature 100% CNC ported intake, exhaust, and combustion chambers for maximum airflow efficiency. The assembled heads come with lightweight 8mm 2.080\" intake valves and 1.600\" exhaust valves, and have a 58cc combustion chamber volume and 70cc exhaust ports that are raised .125\" higher than stock.\n\nThese AFR 205cc cylinder heads are engineered for optimal performance in the 3500 to 8000 RPM range, making them an excellent choice for 331 through 392 cubic inch engines. The trademark 3\/4\" thick head deck provides robustness for applications involving heavy nitrous or blower use. Optional nitrous or blower exhaust ports with 73cc ultra high-flowing ports are also available.\n\nInstallation notes indicate that 289\/302 engines will require head bolt bushings, and the high-flow 2.080\" valves necessitate aftermarket pistons with valve reliefs. Additionally, these cylinder heads are intended for use on pre-pollution controlled vehicles, specifically 1965 and older U.S. manufactured California certified vehicles, and 1967 and older U.S. manufactured federally certified vehicles.","brand":"AFR (Air Force Racing)","offers":[{"title":"Default Title","offer_id":52686842757432,"sku":"1450","price":2615.35,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/660673221.jpg?v=1784877398","url":"https:\/\/store.motormia.co\/products\/afr-205cc-assembled-aluminum-cylinder-heads","provider":"MOTORMIA","version":"1.0","type":"link"}