{"product_id":"dart-da15200030-chev-bb-cast-heads-lge-port-345cc-runner-15200030","title":"DART DA15200030 Chev BB Cast Heads Lge Port 345cc Runner 15200030","description":"\u003cp\u003e \u003c\/p\u003e  \u003cp\u003e\u003cbr\u003e \u003cstrong\u003e345cc Int, Bare. Dart BB-Chevy Iron Eagle Heads. \u003c\/strong\u003e\u003c\/p\u003e  \u003cp\u003e \u003c\/p\u003e  \u003cul\u003e  \u003cli\u003e  \u003cdiv\u003e\u003cstrong\u003eAluminum Big-Block Heads in a Cast Iron Version! Cast from a superior iron alloy casting. \u003c\/strong\u003e\u003c\/div\u003e  \u003c\/li\u003e  \u003cli\u003e  \u003cdiv\u003e\u003cstrong\u003eIntake runner volume: 3080cc or 345cc as cast. \u003c\/strong\u003e\u003c\/div\u003e  \u003c\/li\u003e  \u003cli\u003e  \u003cdiv\u003e\u003cstrong\u003eExhaust runner volume: 129cc as cast. \u003c\/strong\u003e\u003c\/div\u003e  \u003c\/li\u003e  \u003cli\u003e  \u003cdiv\u003e\u003cstrong\u003eIntake port opening: 1.700''x2.430'' (Mr. Gasket 720-121 gasket) \u003c\/strong\u003e\u003c\/div\u003e  \u003c\/li\u003e  \u003cli\u003e  \u003cdiv\u003e\u003cstrong\u003eExhaust port opening dimensions: 1.650'' x 1.800'' (Fel-Pro 375-1412 gasket). \u003c\/strong\u003e\u003c\/div\u003e  \u003c\/li\u003e  \u003cli\u003e  \u003cdiv\u003e\u003cstrong\u003eIntake port is in stock location and will accept most aftermarket manifolds, exhaust port location and exhaust bolt pattern is raised .300''. (1'' longer exhaust bolt kit is required.) \u003c\/strong\u003e\u003c\/div\u003e  \u003c\/li\u003e  \u003cli\u003e  \u003cdiv\u003e\u003cstrong\u003eCombustion chamber is 119cc as cast, minimum deck thicknes is .350'', valve angles: Intake - 24°, exhaust - 15° (2° roll-over fron stock). 4° cant on both intake \u0026amp; exhuast, utilizes conventional ''off-the-shelf'' pistons valvetrain is standard stud-mounted system. \u003c\/strong\u003e\u003c\/div\u003e  \u003c\/li\u003e  \u003cli\u003e  \u003cdiv\u003e\u003cstrong\u003eUses standard rocker arms and guide plates \u003c\/strong\u003e\u003c\/div\u003e  \u003c\/li\u003e  \u003cli\u003e  \u003cdiv\u003e\u003cstrong\u003eValve seats: ductile iron material. Sizes: Intake 2.450'' OD x 2.00'' ID x .375'', Exhaust 2.00'' x 1.600';' x .375'' \u003c\/strong\u003e\u003c\/div\u003e  \u003c\/li\u003e  \u003cli\u003e  \u003cdiv\u003e\u003cstrong\u003eRaised valve cover rails machined to use standard valve covers, all accessory bolt holes drilled and tapped, can be used on either a Mark IV, Gen V or Gen VI block with the proper head gasket, roller valve spring assemblies: 1.550'' dual - 195# @ 1.900'' \/ .670'' max. lift. 1.625'' dual - 250# @ 2.000'' \/ .750'' max. lift. \u003c\/strong\u003e\u003c\/div\u003e  \u003c\/li\u003e  \u003cli\u003e  \u003cdiv\u003e\u003cstrong\u003eNote: ARP Head Bolts Required, #135-3605.\u003c\/strong\u003e\u003c\/div\u003e  \u003c\/li\u003e \u003c\/ul\u003e \u003cbr\u003e\u003cbr\u003e","brand":"Dart","offers":[{"title":"Default Title","offer_id":44682977444151,"sku":"DA15200030","price":3326.9,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0680\/9364\/1015\/files\/69393.jpg?v=1780356410","url":"https:\/\/enginemaster.com.au\/products\/dart-da15200030-chev-bb-cast-heads-lge-port-345cc-runner-15200030","provider":"Engine Master","version":"1.0","type":"link"}