{"product_id":"engine-cylinder-head-30","title":"Engine Cylinder Head","description":"The Edelbrock #609815 E-Tec Cylinder Heads are replacements for 302, 327, 350 \u0026amp; 400 c.i.d. S\/B Chevy engines with \"Vortec-style\" manifolds. They feature an LT1-style raised runner intake port design for increased air-flow and ultimate performance. A unique combustion chamber design positions the spark plug closer to the center of the cylinder, promoting a more efficient combustion resulting in more power. These heads include an adjustable rocker stud and guide plate set-up for use with adjustable rockers or washers to properly position the stud height to accommodate factory style self-aligning rocker arms. They have 20% more exhaust flow than cast iron Vortec heads, great performance up to 6000 rpm and can produce 9.5:1 compression with stock pistons in 350 cubic-inch engines. RPM E-Tec cylinder heads are dual-drilled and will accept 1987-95 center bolt and\/or 1986 \u0026amp; prior perimeter flange mount valve covers and most stock exhaust manifolds.","brand":"Edelbrock","offers":[{"title":"Default Title","offer_id":47960831721717,"sku":"BDVJ_609815","price":803.5,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0751\/7025\/0997\/files\/ec95a8f71fc98.jpg?v=1775624210","url":"https:\/\/berserkerms.com\/products\/engine-cylinder-head-30","provider":"Berserker Motorsports LLC","version":"1.0","type":"link"}