Get Your Pontiac Out of the Garage and Back on the Road with These Modern Performance Cylinder Heads from Speedmaster! Our Heads Flow 289CFM As Cast! Order 1 for each head, 2 for a pair. Save Your Factory Cast Iron Heads Because They’re Never Going To Make Them Again. These Weigh a Lot Less & Flow a Lot More! Bare Round Exhaust Port Head with Seat and Guides. No Valves, Valve Springs, Retainers, etc. Valve Lift Intake Exhaust. Combustion Chamber Volume (cc). Intake Runner Volume (cc). Exhaust Runner Volume (cc). Intake Valve Diameter (in). Exhaust Valve Diameter (in). Valve Stem Seals Included. Rocker Arm Studs Included. Rocker Arm Nuts Included. Valve Cover Mounting Style. Accessory Bolt Holes Drilled. Valve Seat Machine Style. The head gasket we recommend for our Pontiac heads is Felpro #10171. (4.540 Bore) or Fel Pro#1016 (4.300 Bore). Our heads are manufactured with the Ram Air IV pattern which requires Felpro #1233 gaskets. Please measure for exact pushrod length once heads and rockers are fully installed. Deck machining, head gasket thickness and rocker arm style will all affect pushrod height. All Speedmaster Pontiac heads use standard 14mm. X 750 reach, 5/8 hex, gasket seat sparkplugs like NGK R5671A-7, Autolite 3924, Champion RC12YC, etc. Remember that higher compression/ boost require a colder heat range sparkplug. HEAD BOLTS / STUDS. Our Pontiac heads utilize standard Ram Air Iv head bolts or studs. We recommend the use of Edelbrock exhaust gaskets #7281 or any comparable item of your choice. The item “Pontiac 389 455 215cc 72cc RamAir IV Bare Round Ext Port Aluminum Cylinder Head” is in sale since Saturday, April 20, 2019. This item is in the category “eBay Motors\Parts & Accessories\Car & Truck Parts\Engines & Components\Cylinder Heads & Parts”. The seller is “rpmspeedshopindy” and is located in Brownsburg, Indiana. This item can be shipped to United States, Canada, United Kingdom, Australia, Mexico, Germany, Japan, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Greece, Portugal, Cyprus, Slovenia, China, Sweden, South Korea, Indonesia, Taiwan, South africa, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Austria, Bahamas, Israel, New Zealand, Singapore, Switzerland, Norway, Saudi arabia, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Brazil, Chile, Colombia, Costa rica, Panama, Trinidad and tobago, Guatemala, Honduras, Jamaica, Barbados, Bangladesh, Bermuda, Brunei darussalam, Bolivia, Ecuador, Egypt, French guiana, Guernsey, Gibraltar, Guadeloupe, Iceland, Jersey, Jordan, Cambodia, Cayman islands, Liechtenstein, Sri lanka, Luxembourg, Monaco, Macao, Martinique, Maldives, Nicaragua, Oman, Peru, Pakistan, Paraguay, Reunion, Viet nam, Uruguay.
- Material: Aluminum
- Type: Bare Cylinder Heads
- Surface Finish: Cast & Machined
- Manufacturer Part Number: PCE281.1800
- Brand: Speedmaster
- Fitment Type: Performance/Custom