This Listing is for Two Cylinder Heads 2 Heads With Valves, Springs. Completely Assembled Aluminum Small Block Chevrolet Cylinder Heads Straight Plug Heads. Listing Includes (2) SBC Aluminum Fully Assembled Heads. SBC 283,327,350,383,400,406 CID. Heads are set up for Hydraulic Flat Tappet Cam Shafts with a Max lift.220cc Runners, 64cc Combustion Chamber, 2.02 Intake Valves/1.60 Exhaust Valves. Stainless Steel Valves on Both Intake & Exhaust. Average Gain of 30-50 Horsepower over OEM Cast Iron Heads. They will save you about 30lbs on weight over stock cast iron heads. Professionally Assembled Ready to Run. These heads work great on both Carbureted and Fuel Injection engines. Great Performance Head for Street Cars or Racing Performance Engines. Heads have factory accessory holes. The item "SBC Aluminum Heads 220cc/64cc Runners Small Block Chevy 350 383 FREE SHIPPING" is in sale since Friday, May 24, 2019. This item is in the category "eBay Motors\Parts & Accessories\Performance & Racing Parts\Auto Performance Parts\Engine & Components\Cylinder Heads". The seller is "02starrider" and is located in King, North Carolina. 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, Bahamas, 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, Iceland, Martinique, Oman, Viet nam.