The specs on the heads are as follows. Valve size: 2.02x1.60. Valve Springs: Single with dampner 105lbs closed pressure.
This pair of heads are a direct replacement for any OEM small block head. All OEM bracketry and accessories will fit. These heads are comparable to Edelbrock, dart, pro comp, merlin, rpm, trick flow heads. Correct 3/8 flat guide plates. Correct 1.5 x 3/8 stainless steel full roller rockers.Correct 3/8x7/16 screw in rocker studs. 58.0 113.5 159.2 199.7 227.6 244.2 248.3. 52.0 97.8 132.94 161.90 180.00 189.2 192.1. The item "Chevy Top End Kit 350 383 400 Aluminum Cylinder Heads straight plug 327 283" is in sale since Thursday, July 6, 2017. This item is in the category "eBay Motors\Parts & Accessories\Car & Truck Parts\Engines & Components\Cylinder Heads & Parts". The seller is "apmachine44" and is located in Fresno, California.
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, Liechtenstein, Sri lanka, Luxembourg, Monaco, Macao, Martinique, Maldives, Nicaragua, Oman, Peru, Pakistan, Paraguay, Reunion, Viet nam, Uruguay, Ukraine, Cayman islands.