{"product_id":"proflow-supermax-cylinder-heads-aluminium-holden-commodore-vn-efi-complete-590-hp-out-of-box-63cc-chamber-200cc-intake-runner-pair-pfeahh20063-efi","title":"Proflow SuperMax Cylinder Heads, Aluminium, Holden Commodore VN EFI, Complete, 590 HP Out of Box, 63cc Chamber, 200cc Intake Runner, Pair - PFEAHH20063-EFI","description":"\u003cp\u003e\u003cb\u003ePart Number\u003c\/b\u003e: PFEAHH20063-EFI\u003c\/p\u003e\u003cp\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eProflow Holden Commodore VN SuperMax-EFI Aluminium Heads Complete\u003c\/strong\u003e\u003c\/p\u003e\r\n\r\n\u003cp\u003eProflow does not sacrifice quality for a low price--you get both with our aluminium cylinder heads. The lightweight heads are cast from A-356 aluminium alloy with a large choice of Engine, for SB \u0026amp; BB Chevrolet, LS Chev Holden Ford SB 289-351W, 302,351 Cleveland 2V \u0026amp; 3V \u0026amp; BB FE, and Chrysler SB \u0026amp; BB, phosphorous bronze valve guides, and ductile iron valve seats for use with unleaded gas. They're also end-milled and drilled for accessories. These fully assembled heads have stainless steel valves and high performance valve springs.  Perfect for your Mild or High performance Hot Rod.\u003c\/p\u003e\r\n\r\n\u003cp\u003e\u003cstrong\u003eMust Use Proflow Shaft Mount Aluminium Rocker kit # PFERRK-6000\u003c\/strong\u003e\u003c\/p\u003e\r\n\r\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Can use CC-4769-16 if your needing to run a smaller ID spring.\u003c\/p\u003e\r\n\r\n\u003cdiv style=\"overflow-x:auto;\"\u003e\r\n\u003ctable align=\"center\" border=\"0\" cellpadding=\"5\" cellspacing=\"1\" style=\"margin:auto;width:500px;\"\u003e\r\n\t\u003ctbody\u003e\r\n\t\t\u003ctr\u003e\r\n\t\t\t\u003ctd colspan=\"2\" style=\"text-align: center;\"\u003e\r\n\t\t\t\u003ch2\u003eSPECIFICATIONS\u003c\/h2\u003e\r\n\t\t\t\u003c\/td\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\t\u003ctr\u003e\r\n\t\t\t\u003ctd style=\"text-align: right;\"\u003e\u003cstrong\u003eCombustion Chamber \u003c\/strong\u003e\u003c\/td\u003e\r\n\t\t\t\u003ctd\u003e 64 cc\u003c\/td\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\t\u003ctr style=\"background:#dddddd;\"\u003e\r\n\t\t\t\u003ctd style=\"text-align: right;\"\u003e\u003cstrong\u003eIntake Port Volume \u003c\/strong\u003e\u003c\/td\u003e\r\n\t\t\t\u003ctd\u003e 200 cc\u003c\/td\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\t\u003ctr\u003e\r\n\t\t\t\u003ctd style=\"text-align: right;\"\u003e\u003cstrong\u003eIntake Port Dimensions \u003c\/strong\u003e\u003c\/td\u003e\r\n\t\t\t\u003ctd\u003e 2.150” (H) x 1.290” (W)\u003c\/td\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\t\u003ctr style=\"background:#dddddd;\"\u003e\r\n\t\t\t\u003ctd style=\"text-align: right;\"\u003e\u003cstrong\u003eExhaust Port Volume \u003c\/strong\u003e\u003c\/td\u003e\r\n\t\t\t\u003ctd\u003e 72 cc\u003c\/td\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\t\u003ctr\u003e\r\n\t\t\t\u003ctd style=\"text-align: right;\"\u003e\u003cstrong\u003eExhaust Port Dimensions \u003c\/strong\u003e\u003c\/td\u003e\r\n\t\t\t\u003ctd\u003e 1.440” (H) x 1.270” (W)\u003c\/td\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\t\u003ctr style=\"background:#dddddd;\"\u003e\r\n\t\t\t\u003ctd style=\"text-align: right;\"\u003e\u003cstrong\u003eSpark Plug Location \u003c\/strong\u003e\u003c\/td\u003e\r\n\t\t\t\u003ctd\u003e OEM\u003c\/td\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\t\u003ctr\u003e\r\n\t\t\t\u003ctd style=\"text-align: right;\"\u003e\u003cstrong\u003eIntake Valve Diameter \u003c\/strong\u003e\u003c\/td\u003e\r\n\t\t\t\u003ctd\u003e 2.020”\u003c\/td\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\t\u003ctr style=\"background:#dddddd;\"\u003e\r\n\t\t\t\u003ctd style=\"text-align: right;\"\u003e\u003cstrong\u003eValve Material\u003c\/strong\u003e\u003c\/td\u003e\r\n\t\t\t\u003ctd\u003eStainless Steel 21-4N + 4Cr9Si2\u003c\/td\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\t\u003ctr\u003e\r\n\t\t\t\u003ctd style=\"text-align: right;\"\u003e\u003cstrong\u003eExhaust Valve Diameter \u003c\/strong\u003e\u003c\/td\u003e\r\n\t\t\t\u003ctd\u003e 1.60”\u003c\/td\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\t\u003ctr style=\"background:#dddddd;\"\u003e\r\n\t\t\t\u003ctd style=\"text-align: right;\"\u003e\u003cstrong\u003eValve Stem Diameter \u003c\/strong\u003e\u003c\/td\u003e\r\n\t\t\t\u003ctd\u003e 5\/16\"\u003c\/td\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\t\u003ctr\u003e\r\n\t\t\t\u003ctd style=\"text-align: right;\"\u003e\u003cstrong\u003eValve Spring Pocket ID \u003c\/strong\u003e\u003c\/td\u003e\r\n\t\t\t\u003ctd\u003e 1.650”\u003c\/td\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\t\u003ctr style=\"background:#dddddd;\"\u003e\r\n\t\t\t\u003ctd style=\"text-align: right;\"\u003e\u003cstrong\u003eValve Guide OD \u003c\/strong\u003e\u003c\/td\u003e\r\n\t\t\t\u003ctd\u003e 0.530” (0.560\" at base)\u003c\/td\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\t\u003ctr\u003e\r\n\t\t\t\u003ctd style=\"text-align: right;\"\u003e\u003cstrong\u003eMaximum Valve Lift \u003c\/strong\u003e\u003c\/td\u003e\r\n\t\t\t\u003ctd\u003e 0.650\" (0.050\" margin)\u003c\/td\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\t\u003ctr style=\"background:#dddddd;\"\u003e\r\n\t\t\t\u003ctd style=\"text-align: right;\"\u003e\u003cstrong\u003eRocker Stud Thread Size \u003c\/strong\u003e\u003c\/td\u003e\r\n\t\t\t\u003ctd\u003e 7\/16”-14\u003c\/td\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\t\u003ctr\u003e\r\n\t\t\t\u003ctd style=\"text-align: right;\"\u003e\u003cstrong\u003eValve Angle \u003c\/strong\u003e\u003c\/td\u003e\r\n\t\t\t\u003ctd\u003e 3°\u003c\/td\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\t\u003ctr style=\"background:#dddddd;\"\u003e\r\n\t\t\t\u003ctd style=\"text-align: right;\"\u003e \u003cstrong\u003eDeck Thickness \u003c\/strong\u003e\n\u003c\/td\u003e\r\n\t\t\t\u003ctd\u003e 0.780”\u003c\/td\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\t\u003ctr\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\t\u003ctr\u003e\r\n\t\t\t\u003ctd style=\"text-align: right;\"\u003e\u003cstrong\u003eCoil Bind\u003c\/strong\u003e\u003c\/td\u003e\r\n\t\t\t\u003ctd\u003e1.095\"\u003c\/td\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\t\u003ctr style=\"background:#dddddd;\"\u003e\r\n\t\t\t\u003ctd style=\"text-align: right;\"\u003e\u003cstrong\u003eInstalled Height (int.)\u003c\/strong\u003e\u003c\/td\u003e\r\n\t\t\t\u003ctd\u003e1.792\" @ 141 lbs\u003c\/td\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\t\u003ctr\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\t\u003ctr\u003e\r\n\t\t\t\u003ctd style=\"text-align: right;\"\u003e\u003cstrong\u003eInstalled Height (exh.)\u003c\/strong\u003e\u003c\/td\u003e\r\n\t\t\t\u003ctd\u003e1.780\" @ 144 lbs\u003c\/td\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\t\u003ctr style=\"background:#dddddd;\"\u003e\r\n\t\t\t\u003ctd style=\"text-align: right;\"\u003eSpring Rate\u003c\/td\u003e\r\n\t\t\t\u003ctd\u003e331 lbs\/in.\u003c\/td\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\u003c\/tbody\u003e\r\n\u003c\/table\u003e\r\n\r\n\u003cp\u003e \u003c\/p\u003e\r\n\u003c\/div\u003e","brand":"Proflow","offers":[{"title":"Default Title","offer_id":45229416317155,"sku":"PFEAHH20063-EFI","price":4704.0,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/0821\/9875\/files\/PFEAHH20063-EFI_69d1dc02-505b-4d21-b5ce-f9806273a43e.jpg?v=1775534211","url":"https:\/\/fastlanespares.co.nz\/products\/proflow-supermax-cylinder-heads-aluminium-holden-commodore-vn-efi-complete-590-hp-out-of-box-63cc-chamber-200cc-intake-runner-pair-pfeahh20063-efi","provider":"Fast Lane Spares","version":"1.0","type":"link"}