{"product_id":"proflow-cylinder-heads-airmax-320-cnc-aluminium-bb-chevrolet-assembled-120cc-chamber-315cc-intake-runner-pair-pfeahbb315121-cnc","title":"Proflow Cylinder Heads, AirMax 320 CNC, Aluminium, BB Chevrolet, Assembled, 120cc Chamber, 315cc Intake Runner, Pair - PFEAHBB315121-CNC","description":"\u003cp\u003e\u003cb\u003ePart Number\u003c\/b\u003e: PFEAHBB315121-CNC\u003c\/p\u003e\u003cp\u003e\u003csection class=\"productdetails n-responsive-content\" aria-label=\"Product Description\"\u003e\n    \u003cp\u003e\u003cstrong\u003eProflow Cylinder Heads, AirMax 320 CNC, Aluminium, BB Chevrolet, Assembled\u003c\/strong\u003e\u003c\/p\u003e\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. They have phosphorous bronze valve guides, and ductile iron valve seats for use with unleaded gas. They're also end-milled and drilled for accessories. The fully assembled heads have stainless steel valves, high performance valve springs, 7 degree valve locks, rocker arm studs, and guideplates.\u003c\/p\u003e\n    \u003cp\u003eThis BBC cylinder head is recommended for agressive street or street\/strip applications with displacements up to 540 cubic inches, operating at or below 6800 RPM. 1.625 O.D. Solid Roller, 275lbs on seat,.850 Maximum Lift.\u003c\/p\u003e\n\n    \u003cdiv style=\"overflow-x:auto;\"\u003e\n        \u003ctable align=\"center\" border=\"0\" cellpadding=\"5\" cellspacing=\"1\" style=\"margin:auto;width:500px;\"\u003e\n            \u003ctbody\u003e\n                \u003ctr\u003e\n                    \u003ctd colspan=\"2\" style=\"text-align: center;\"\u003e\n                        \u003ch2\u003eSPECIFICATIONS\u003c\/h2\u003e\n                    \u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr\u003e\n                    \u003ctd style=\"width: 50%; text-align: right;\"\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n                    \u003ctd style=\"width: 50%; text-align: left;\"\u003eA356 Aluminum\u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr style=\"background:#dddddd;\"\u003e\n                    \u003ctd style=\"width: 50%; text-align: right;\"\u003e\u003cstrong\u003eIntake Port Volume\u003c\/strong\u003e\u003c\/td\u003e\n                    \u003ctd style=\"width: 50%; text-align: left;\"\u003e317cc\u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr\u003e\n                    \u003ctd style=\"width: 50%; text-align: right;\"\u003e\u003cstrong\u003eIntake Port Dimension\u003c\/strong\u003e\u003c\/td\u003e\n                    \u003ctd style=\"width: 50%; text-align: left;\"\u003e2.450\"H x 1.755\"W x 13\/32 Radius\u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr style=\"background:#dddddd;\"\u003e\n                    \u003ctd style=\"width: 50%; text-align: right;\"\u003e\u003cstrong\u003eIntake Port Location\u003c\/strong\u003e\u003c\/td\u003e\n                    \u003ctd style=\"width: 50%; text-align: left;\"\u003eStock\u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr\u003e\n                    \u003ctd style=\"width: 50%; text-align: right;\"\u003e\u003cstrong\u003eExhaust Port Volume\u003c\/strong\u003e\u003c\/td\u003e\n                    \u003ctd style=\"width: 50%; text-align: left;\"\u003e135cc\u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr style=\"background:#dddddd;\"\u003e\n                    \u003ctd style=\"width: 50%; text-align: right;\"\u003e\u003cstrong\u003eExhaust Port Dimension\u003c\/strong\u003e\u003c\/td\u003e\n                    \u003ctd style=\"width: 50%; text-align: left;\"\u003e1.780\"H x 2.025\" W\u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr\u003e\n                    \u003ctd style=\"width: 50%; text-align: right;\"\u003e\u003cstrong\u003eIntake Valve Diameter (in):\u003c\/strong\u003e\u003c\/td\u003e\n                    \u003ctd style=\"width: 50%; text-align: left;\"\u003e2.25 in.\u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr style=\"background:#dddddd;\"\u003e\n                    \u003ctd style=\"width: 50%; text-align: right;\"\u003e\u003cstrong\u003eExhaust Valve Diameter (in):\u003c\/strong\u003e\u003c\/td\u003e\n                    \u003ctd style=\"width: 50%; text-align: left;\"\u003e1.880 in.\u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr\u003e\n                    \u003ctd style=\"width: 50%; text-align: right;\"\u003e\u003cstrong\u003eCombustion Chamber Size\u003c\/strong\u003e\u003c\/td\u003e\n                    \u003ctd style=\"width: 50%; text-align: left;\"\u003e121cc\u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr style=\"background:#dddddd;\"\u003e\n                    \u003ctd style=\"width: 50%; text-align: right;\"\u003e\u003cstrong\u003eValve Springs Pocket I.D.\u003c\/strong\u003e\u003c\/td\u003e\n                    \u003ctd style=\"width: 50%; text-align: left;\"\u003e1.735\"\u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr\u003e\n                    \u003ctd style=\"width: 50%; text-align: right;\"\u003e\u003cstrong\u003eMaximum Valve Lift (in):\u003c\/strong\u003e\u003c\/td\u003e\n                    \u003ctd style=\"width: 50%; text-align: left;\"\u003e0.750 in.\u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr style=\"background:#dddddd;\"\u003e\n                    \u003ctd style=\"width: 50%; text-align: right;\"\u003e\u003cstrong\u003eOutside Diameter of Outer Spring (in):\u003c\/strong\u003e\u003c\/td\u003e\n                    \u003ctd style=\"width: 50%; text-align: left;\"\u003e1.625 in.\u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr\u003e\n                    \u003ctd style=\"width: 50%; text-align: right;\"\u003e\u003cstrong\u003eLock Style:\u003c\/strong\u003e\u003c\/td\u003e\n                    \u003ctd style=\"width: 50%; text-align: left;\"\u003e10 degree\u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr style=\"background:#dddddd;\"\u003e\n                    \u003ctd style=\"width: 50%; text-align: right;\"\u003e\u003cstrong\u003eRocker Arm Nut Thread Size:\u003c\/strong\u003e\u003c\/td\u003e\n                    \u003ctd style=\"width: 50%; text-align: left;\"\u003e7\/16-20 in.\u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr\u003e\n                    \u003ctd style=\"width: 50%; text-align: right;\"\u003e\u003cstrong\u003eValve Cover Mounting Style:\u003c\/strong\u003e\u003c\/td\u003e\n                    \u003ctd style=\"width: 50%; text-align: left;\"\u003ePerimeter bolt\u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr style=\"background:#dddddd;\"\u003e\n                    \u003ctd style=\"width: 50%; text-align: right;\"\u003e\u003cstrong\u003eIntake Valve Angle:\u003c\/strong\u003e\u003c\/td\u003e\n                    \u003ctd style=\"width: 50%; text-align: left;\"\u003e24\/4\u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr\u003e\n                    \u003ctd style=\"width: 50%; text-align: right;\"\u003e\u003cstrong\u003eExhaust Valve Angle:\u003c\/strong\u003e\u003c\/td\u003e\n                    \u003ctd style=\"width: 50%; text-align: left;\"\u003e15\/4\u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr style=\"background:#dddddd;\"\u003e\n                    \u003ctd style=\"width: 50%; text-align: right;\"\u003e\u003cstrong\u003eValve Guide Material:\u003c\/strong\u003e\u003c\/td\u003e\n                    \u003ctd style=\"width: 50%; text-align: left;\"\u003eManganese Bronze\u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr\u003e\n                    \u003ctd style=\"width: 50%; text-align: right;\"\u003e\u003cstrong\u003eIntake Valve Seat Machine Style:\u003c\/strong\u003e\u003c\/td\u003e\n                    \u003ctd style=\"width: 50%; text-align: left;\"\u003e5-angle\u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr style=\"background:#dddddd;\"\u003e\n                    \u003ctd style=\"width: 50%; text-align: right;\"\u003e\u003cstrong\u003eValve Seat Material:\u003c\/strong\u003e\u003c\/td\u003e\n                    \u003ctd style=\"width: 50%; text-align: left;\"\u003eMental powder\u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr\u003e\n                    \u003ctd style=\"width: 50%; text-align: right;\"\u003e\u003cstrong\u003eOiling Style:\u003c\/strong\u003e\u003c\/td\u003e\n                    \u003ctd style=\"width: 50%; text-align: left;\"\u003eThrough pushrod\u003c\/td\u003e\n                \u003c\/tr\u003e\n            \u003c\/tbody\u003e\n        \u003c\/table\u003e\n\n        \u003cp\u003e \u003c\/p\u003e\n\n        \u003ctable align=\"center\" border=\"0\" cellpadding=\"5\" cellspacing=\"1\" style=\"margin:auto;width:500px;\"\u003e\n            \u003ctbody\u003e\n                \u003ctr\u003e\n                    \u003ctd style=\"text-align: center;\"\u003e\n                        \u003ch2\u003eFEATURES\u003c\/h2\u003e\n                    \u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr\u003e\n                    \u003ctd style=\"text-align: left;\"\u003e11\/32\" Intake Valve, 2.250\" x5.500\" O.A.L\u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr style=\"background:#dddddd;\"\u003e\n                    \u003ctd style=\"text-align: left;\"\u003e11\/32\" Tulip Exhaust Valve, 1.880\" x 5.450\" O.A.L\u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr\u003e\n                    \u003ctd style=\"text-align: left;\"\u003eRacing Spring #1224 1.625 O.D. Solid Roller, 275lbs on seat,.850 Maximum Lift, Max RPM 7400-7600\u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr style=\"background:#dddddd;\"\u003e\n                    \u003ctd style=\"text-align: left;\"\u003e10° Retainers 1.490\" O.D x 1.180\" I.D x.765\" I.D\u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr\u003e\n                    \u003ctd style=\"text-align: left;\"\u003e10° 11\/32\" Valve Locks with lashcap recess\u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr style=\"background:#dddddd;\"\u003e\n                    \u003ctd style=\"text-align: left;\"\u003eARP 7\/16\" Rocker Exhaust Studs\u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr\u003e\n                    \u003ctd style=\"text-align: left;\"\u003eARP 7\/16\" Rocker Intake Studs\u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr style=\"background:#dddddd;\"\u003e\n                    \u003ctd style=\"text-align: left;\"\u003e3\/8\" Guide Plates\u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr\u003e\n                    \u003ctd style=\"text-align: left;\"\u003e11\/32\" Viton Valve Seals\u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr style=\"background:#dddddd;\"\u003e\n                    \u003ctd style=\"text-align: left;\"\u003eHardened Spring Cup 1.740\" O.D \/ 1.650\" I.D\u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr\u003e\n                    \u003ctd style=\"text-align: left;\"\u003e11\/32\" Intake Manganese Bronze Valve Guides.502\" O.D x 2.10\" O.A.L\u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr style=\"background:#dddddd;\"\u003e\n                    \u003ctd style=\"text-align: left;\"\u003e11\/32\" Exhaust Maganese Bronze Valve Guides.502\" O.D x 2.25\" O.A.L\u003c\/td\u003e\n                \u003c\/tr\u003e\n            \u003c\/tbody\u003e\n        \u003c\/table\u003e\n\n        \u003cp\u003e \u003c\/p\u003e\n\n        \u003ctable align=\"center\" border=\"0\" cellpadding=\"5\" cellspacing=\"1\" style=\"margin:auto;width:500px;\"\u003e\n            \u003ctbody\u003e\n                \u003ctr\u003e\n                    \u003ctd colspan=\"2\" style=\"text-align: center;\"\u003e\n                        \u003ch2\u003eRECOMMENDED COMPONENTS\u003c\/h2\u003e\n                    \u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr\u003e\n                    \u003ctd style=\"width: 50%; text-align: right;\"\u003e\u003cstrong\u003eIntake Port Gasket\u003c\/strong\u003e\u003c\/td\u003e\n                    \u003ctd style=\"width: 50%; text-align: left;\"\u003e(.120\" Thick)\u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr style=\"background:#dddddd;\"\u003e\n                    \u003ctd style=\"width: 50%; text-align: right;\"\u003e\u003cstrong\u003eIntake Port Gasket\u003c\/strong\u003e\u003c\/td\u003e\n                    \u003ctd style=\"width: 50%; text-align: left;\"\u003e(.060\" Thick)\u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr\u003e\n                    \u003ctd style=\"width: 50%; text-align: right;\"\u003e\u003cstrong\u003eImportant\u003c\/strong\u003e\u003c\/td\u003e\n                    \u003ctd style=\"width: 50%; text-align: left;\"\u003eDo not port match your intake manifold to Fel-Pro gasket as it does not precisely fit the heads.\u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr style=\"background:#dddddd;\"\u003e\n                    \u003ctd style=\"width: 50%; text-align: right;\"\u003e\u003cstrong\u003eExhaust Port Gasket\u003c\/strong\u003e\u003c\/td\u003e\n                    \u003ctd style=\"width: 50%; text-align: left;\"\u003eHead Gasket, Fel-Pro #1047 (Mark V and VI),Head Gasket,, Fel-Pro #1017-1 (Mark IV)\u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr\u003e\n                    \u003ctd style=\"width: 50%; text-align: right;\"\u003e\u003cstrong\u003eHead Bolts, 7\/16\"-14 x 7\/16\"-14 ARP 235-7202\u003c\/strong\u003e\u003c\/td\u003e\n                    \u003ctd style=\"width: 50%; text-align: left;\"\u003eARP 135-3703 (Mark IV), ARP 135-3707 (Mark V),ARP 235-4713\u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr style=\"background:#dddddd;\"\u003e\n                    \u003ctd style=\"width: 50%; text-align: right;\"\u003e\u003cstrong\u003eHead Bolt Washers,\u003c\/strong\u003e\u003c\/td\u003e\n                    \u003ctd style=\"width: 50%; text-align: left;\"\u003eManley\u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr\u003e\n                    \u003ctd style=\"width: 50%; text-align: right;\"\u003e\u003cstrong\u003eStud Girdle\u003c\/strong\u003e\u003c\/td\u003e\n                    \u003ctd style=\"width: 50%; text-align: left;\"\u003e7\/16 Stud Mount Rocker Arms - 1.7 Ratio (For Optimized Geometry)\u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr style=\"background:#dddddd;\"\u003e\n                    \u003ctd style=\"width: 50%; text-align: right;\"\u003e\u003cstrong\u003e1.7 Shaft Mount Rocker Arms T\u0026amp;D\u003c\/strong\u003e\u003c\/td\u003e\n                    \u003ctd style=\"width: 50%; text-align: left;\"\u003e\u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr\u003e\n                    \u003ctd style=\"width: 50%; text-align: right;\"\u003e\u003cstrong\u003eSuggested Manifold\u003c\/strong\u003e\u003c\/td\u003e\n                    \u003ctd style=\"width: 50%; text-align: left;\"\u003eVictor Jr,Super Victor\u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr style=\"background:#dddddd;\"\u003e\n                    \u003ctd style=\"width: 50%; text-align: right;\"\u003e\u003cstrong\u003eSpark Plug Starting Range\u003c\/strong\u003e\u003c\/td\u003e\n                    \u003ctd style=\"width: 50%; text-align: left;\"\u003ePump Gas 3924 \/ Race Gas 3922\u003c\/td\u003e\n                \u003c\/tr\u003e\n            \u003c\/tbody\u003e\n        \u003c\/table\u003e\n    \u003c\/div\u003e\n\u003c\/section\u003e\u003c\/p\u003e","brand":"Proflow","offers":[{"title":"Default Title","offer_id":48431305982179,"sku":"PFEAHBB315121-CNC","price":5865.3,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/0821\/9875\/files\/PFEAHBB315121-CNC_5058b28b-c46f-4b8e-8814-3d8c0e5bda3e.jpg?v=1775533679","url":"https:\/\/fastlanespares.co.nz\/products\/proflow-cylinder-heads-airmax-320-cnc-aluminium-bb-chevrolet-assembled-120cc-chamber-315cc-intake-runner-pair-pfeahbb315121-cnc","provider":"Fast Lane Spares","version":"1.0","type":"link"}