{"product_id":"powerport-a460-360-bare-cylinder-heads","title":"PowerPort A460 360 Bare Cylinder Heads","description":"The Trick Flow PowerPort A460 360 cylinder heads are engineered for high-performance applications such as drag racing, monster trucks, and tractor pulling, targeting large cubic inch engine combinations. These bare cast aluminum cylinder heads boast CNC-machined 360cc intake runners and 180cc exhaust runners, both featuring Trick Flow's premium high-resolution surface finish to maximize airflow and performance.\n\nKey specifications include an 87cc heart-shaped combustion chamber with a rectangular intake port shape and a raised intake port location. The heads are designed for 2.400\" intake valves and 1.880\" exhaust valves, though valves, springs, retainers, locks, and other valvetrain components are sold separately. They feature a 13\/5\" intake valve angle and a 9.5\/5\" exhaust valve angle. The cylinder heads are equipped with bronze valve guides and ductile iron valve seats machined with a 3-angle profile.\n\nThese cylinder heads feature a heavy-duty 18-bolt mounting pattern, which is compatible with both 10-bolt stock and 18-bolt aftermarket 460 blocks. If using a block without the extra 8 head bolt provisions, the standard 10 bolts can be utilized. It's important to note that these heads require an A460 specific intake manifold and custom-built headers. They also feature standard big block Chevrolet-style exhaust port openings and a raised exhaust port location by 1.5 inches over stock, with the intake port raised 1 inch over stock.","brand":"Trick Flow","offers":[{"title":"Default Title","offer_id":52689430643000,"sku":"TFS-5451B000-C04","price":1799.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/687739164.jpg?v=1784906546","url":"https:\/\/store.motormia.co\/products\/powerport-a460-360-bare-cylinder-heads","provider":"MOTORMIA","version":"1.0","type":"link"}