{"product_id":"powerport-270-bare-cylinder-head","title":"PowerPort 270 Bare Cylinder Head","description":"The Trick Flow® PowerPort® 270 Cylinder Heads offer a significant upgrade for Big Block Mopar engines, outperforming stock and other aftermarket aluminum heads. These heads are cast from premium A356-T61 aluminum for reduced weight and increased strength. The rocker shaft and runner areas have been enhanced for greater strength, and oiling for the rocker shafts has been improved.\n\nKey specifications include a 78cc combustion chamber volume, 270cc intake runner volume, and 74cc exhaust runner volume. The intake valves measure 2.190 inches, while the exhaust valves are 1.760 inches. These heads feature CNC-machined combustion chambers and intake runners for precise dimensions and balanced flow, contributing to maximum power potential. They also include ductile iron valve seats with 3-angle machining and bronze alloy valve guides.\n\nDesigned for compatibility, the PowerPort 270 heads are intended to work with all factory-style big block Mopar pistons, roller rocker arms, and headers. A Max Wedge-style intake manifold is recommended for optimal performance. These are bare castings, meaning valves, springs, retainers, locks, seals, rocker arm studs, rocker arms, guideplates, and valve cover gaskets are not included and must be purchased separately. Longer than stock pushrods may be required, and the minimum bore size is 4.320 inches.","brand":"Trick Flow","offers":[{"title":"Default Title","offer_id":52689430774072,"sku":"TFS-6161B000-C01","price":1274.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/687749594.jpg?v=1784906548","url":"https:\/\/store.motormia.co\/products\/powerport-270-bare-cylinder-head","provider":"MOTORMIA","version":"1.0","type":"link"}