{"product_id":"pontia-326-455-engines-cylinder-heads-ede60509","title":"Engine Cylinder Head \u003cbr\u003e Pontia 326-455£¨5.3-7.4L) Engines","description":"\u003cb\u003eDescription:\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eThe Edelbrock 60509 Performer RPM cylinder head is designed for outstanding performance gains in 1962-79 389-455 c.i.d. Pontiac engines. They are patterned after the 1969-70 Ram Air IV Pontiac cylinder head. The Edelbrock 60509 Performer RPM head with the 72cc combustion chamber are for higher compression engines. Performer RPM 60509 is semi-machined and must be finished by a professional cylinder head porter. They include valve guides and seats installed with no intake pushrod holes.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eSpecifics and Features:\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e\u003cli\u003eCNC Ported: No\u003c\/li\u003e\n\u003cli\u003eCombustion Chamber Volume: Possible 72 CCM\u003c\/li\u003e\n\u003cli\u003eConstruction Type: Pro-Port Raw\u003c\/li\u003e\n\u003cli\u003eDeck Thickness: 0.625 IN\u003c\/li\u003e\n\u003cli\u003eEGR Port: No\u003c\/li\u003e\n\u003cli\u003eExhaust Port Entry: 1.46 in x 1.40 IN\u003c\/li\u003e\n\u003cli\u003eExhaust Valve Diameter: (Suggested) 1.46 in x 1.40 IN\u003c\/li\u003e\n\u003cli\u003eExhaust Valve Pierce Points (X,Y)(C): 1.150 in, 0.000 IN\u003c\/li\u003e\n\u003cli\u003eFamily: Performer RPM\u003c\/li\u003e\n\u003cli\u003eGuide Material: Manganese Bronze\u003c\/li\u003e\n\u003cli\u003eIntake Port Entry: 1.10 in x 2.02 IN\u003c\/li\u003e\n\u003cli\u003eIntake Valve Diameter: (Suggested) 2.11 IN\u003c\/li\u003e\n\u003cli\u003eIntake Valve Pierce Points (X,Y)(C): 0.880 in, 0.000 IN\u003c\/li\u003e\n\u003cli\u003eQuantity: Sold Individually\u003c\/li\u003e\n\u003cli\u003eRetainer Included: No\u003c\/li\u003e\n\u003cli\u003eSeat Angle: Exhaust 45 deg\/Intake 45 DD\u003c\/li\u003e\n\u003cli\u003eSeat Material: Ductile Iron\u003c\/li\u003e\n\u003cli\u003eSeries: Pro-Port\u003c\/li\u003e\n\u003cli\u003eSpecialty: Hot Isostatic Pressing (HIP) Processing\u003c\/li\u003e\n\u003cli\u003eValve Angle: 14 DD\u003c\/li\u003e\n\u003cli\u003eValve Guides Included: Yes\u003c\/li\u003e\n\u003cli\u003eValve Seats Included: Yes\u003c\/li\u003e\n\u003cli\u003eValve Spacing: 2.030 IN\u003c\/li\u003e\u003cbr\u003e\u003cbr\u003e\u003cb\u003ePackage Includes:\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e\u003cli\u003eEdelbrock Pontiac Cylinder Head\u003c\/li\u003e\u003cbr\u003e\u003cbr\u003e\u003cb\u003eCompatible With:\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e\u003cli\u003e1975 Buick LeSabre\u003c\/li\u003e\n\u003cli\u003e1975 Oldsmobile 98 Delta 88 Custom Cruiser\u003c\/li\u003e\n\u003cli\u003e1965-1978 Pontiac Bonneville Catalina\u003c\/li\u003e\n\u003cli\u003e1967-1979 Pontiac Firebird\u003c\/li\u003e\n\u003cli\u003e1971-1978 Pontiac Grand Safari\u003c\/li\u003e\n\u003cli\u003e1971-1975 Pontiac Grandville\u003c\/li\u003e\n\u003cli\u003e1968-1977 Pontiac LeMans\u003c\/li\u003e\n\u003cli\u003e1965-1973 Pontiac GTO\u003c\/li\u003e\n\u003cli\u003e1965-1966 Pontiac Star Chief\u003c\/li\u003e\n\u003cli\u003e1975-1977 Pontiac Grand LeMans\u003c\/li\u003e\n\u003cli\u003e1965-1977 Pontiac Grand Prix\u003c\/li\u003e\n\u003cli\u003e1966-1974,1976 Pontiac Parisienne Laurentian\u003c\/li\u003e\n\u003cli\u003e1973-1975 Pontiac Grand Am\u003c\/li\u003e\n\u003cli\u003e1967-1970 Pontiac Executive\u003c\/li\u003e\n\u003cli\u003e1968-1970 Pontiac Tempest\u003c\/li\u003e\n\u003cli\u003e1970-1971 Pontiac Acadian\u003c\/li\u003e\n\u003cli\u003e1966-1970 Pontiac Strato-Chief\u003c\/li\u003e\u003cbr\u003e\u003cbr\u003e","brand":"Edelbrock","offers":[{"title":"Default Title","offer_id":52773601280363,"sku":"EDE-60509","price":976.5,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1961\/1987\/files\/EDE-60509-1.jpg?v=1768812405","url":"https:\/\/caautoparts.com\/products\/pontia-326-455-engines-cylinder-heads-ede60509","provider":"CA Auto Parts","version":"1.0","type":"link"}