{"product_id":"edelbrock-performer-61579-87cc-pontiac-cylinder-head-with-complete-d-port-exhaust","title":"Edelbrock Performer 61579 87cc Pontiac Cylinder Head with Complete D-Port Exhaust","description":"\u003cp\u003ePontiac Performer heads utilize a D-Port exhaust port configuration for standard D-port exhaust systems.\u003c\/p\u003e\u003cp\u003eDesigned for 1962-79 389, 400, 421, 455 cid V8 Pontiac engines with a bore of 4.060in.\u003c\/p\u003e\u003cp\u003eor larger, they feature optimized oil return passages for increased oil flow.\u003c\/p\u003e\u003cp\u003eAvailable in three heart-shaped combustion chamber sizes, including 65cc, 72cc, and 87cc, the 65cc combustion chambers are as-cast, while the 72cc and 87cc chambers are fully CNCd to provide a 9.5:1 compression ratio when used with flat-top pistons.\u003c\/p\u003e\u003cp\u003eThe spark plug has been relocated closer to the exhaust valve for improved performance.\u003c\/p\u003e\u003cp\u003eCast with extra thick port walls and a compact port size, these heads are ideal for CNC and hand parting.\u003c\/p\u003e\u003cp\u003eComplete heads include guide plates, rocker studs, and high-quality valve train for direct bolt-on application.\u003c\/p\u003e\u003cp\u003eThe head crossover is machined for 50-state emissions legal performance.\u003c\/p\u003e","brand":"Edelbrock","offers":[{"title":"Default Title","offer_id":51725398638874,"sku":"EDL61579","price":1738.72,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0975\/8942\/8506\/files\/61xJcxhID1L.jpg?v=1771656656","url":"https:\/\/trybeepbeep.com\/products\/edelbrock-performer-61579-87cc-pontiac-cylinder-head-with-complete-d-port-exhaust","provider":"TryBeepbeep","version":"1.0","type":"link"}