The spark plug holes and valves are in the stock location with a valve cover rail thats raised. Complete heads come with stainless steel, 1-piece, swirl-polished, under-cut stem valve (2.05'' intake/1.60'' exhaust) as well as phosphor bronze valve guides.
Note: Aftermarket 289/302 heads including Brodix, Edelbrock, Ford Motorsport and World Products with 1/2'' bolt hole diameters (block is 7/16'' bolt hole), except 397-M-6049-P303 (''P'' style head). They are 0.230'' shorter than a conventional spark plug and have a 5/8'' hex for easier access. JEGS High Performance 101 Jeg's Place Delaware, Ohio 43015. The item "Edelbrock 77199 Victor Jr.
20 deg Aluminum Cylinder Head Ford 289-351W" is in sale since Tuesday, February 21, 2012. This item is in the category "eBay Motors\Parts & Accessories\Car & Truck Parts\Engines & Components\Cylinder Heads & Parts".The seller is "jegsperformance" and is located in Delaware, Ohio. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, China, Sweden, South Korea, Indonesia, Taiwan, South africa, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Russian federation, Israel, Mexico, New Zealand, Singapore, Switzerland, Norway, Saudi arabia, Ukraine, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Brazil, Chile, Colombia, Costa rica, Panama, Trinidad and tobago, Guatemala, Honduras, Jamaica.