Chevy 383 Speed Pro Pistons. 350 block with 3.75 crankshaft.Flat top with 2 valve reliefs. For use with 5.7 connecting rods. Includes pins and wire locks. Can be used with either pressed fit or bushed rods. These hypereutectic Speed Pros are perfect for stock to moderate performance rebuilds. Silicone aluminum alloy allows them to run with tighter clearances, less friction, and increased sealing. Higher strength compared to regular cast pistons. Duroshield coating on piston skirts delivers longer life and reduced friction. 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 "SBC Chevy 383 Speed Pro Flat Top +40 Hypereutectic Pistons 5.7 Rod Small Block" is in sale since Monday, October 29, 2012. This item is in the category "eBay Motors\Parts & Accessories\Car & Truck Parts\Engines & Components\Pistons, Rings, Rods & 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, Russian federation, Israel, Mexico, New Zealand, Philippines, Singapore, Switzerland, Norway, Saudi arabia, Ukraine, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Brazil, Chile, Colombia, Costa rica, Dominican republic, Panama, Trinidad and tobago, Guatemala, El salvador, Honduras, Jamaica.