2.50" T x 1.81" W. 1.90" T x 1.65" W.Aircraft quality high grade aluminum alloy. Multi-angle seat design for improved flow at low lifts. Advanced port design for improved flow at all lifts.
Advanced combustion chamber design allows superb flame travel and burn. Additional pushrod clearance machined along outside port walls.Threaded accessory holes in ends of heads. Thick deck to resist warping and allow for additional milling if desired. Comes with 7/16 Shouldered Screw In Studs and Guide Plates (Not installed). All assembled heads are assembled right here in Iowa in our machine shop and checked by our machinists before leaving! 1.525 diameter valve springs, good to. 650 lift (flat tappet cams). Stainless steel 1 piece swirl polished valves. 10 degree chromoly steel retainers. 7/16 shouldered screw in studs and guide plates.
These are the best place to start when planning your next performance engine project. Perfect for high revving drag racers & stroker applications! Lots of features at a nice price makes these perfect for anyone that has always wanted to try aluminum heads or those doing more serious race duty as well. When paired with engine size and intended use these flow well and make power - many of our customer's favorite! To prevent any delays with your order you should watch for the following common issues.
Addresses that only have a PO Box can cause long delays and almost always result with having to credit/cancel the order in the end. If the ord er requires multiple packages someone will need to sign for each one. Some items are not combined due to size or weight such as crankshafts, torque converters, radiators, cylinder heads, etc.
Powered by SixBit's eCommerce Solution. The item "Chevy BBC 396 454 Rectangle Port Assembled Aluminum Cylinder Heads 122cc 330cc" is in sale since Tuesday, February 9, 2021. This item is in the category "eBay Motors\Parts & Accessories\Car & Truck Parts\Engines & Components\Cylinder Heads & Parts". The seller is "kmjperformance" and is located in Story City, Iowa. 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, Panama, 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.