Our 4-1 Long Tube Style off-road headers are designed to allow the exhaust gasses to flow more freely from each 4 cylinder bank and combine in a more efficient manner. Tubing has been optimized for the Small Block 283/302/305/307/327/350/400 cubic inch engines. This creates a reduction in cylinder backpressure and improved exhaust gas velocity. These improvements free up lost horsepower and torque. An added benefit is a more performance oriented exhaust sound.Made of High Quality T-304 Stainless Steel with Computerized Mandrel-Bends for Strength and Durabilityi. Maximizing Smoothest High Exhaust Air Flow Rate. 4-1 High Performance Racing Spec. TIG Welded CNC Machine Flange. O2 Sensor Bung Insertion and Metal Gasket Included.
Piping Diameters: 4 X 1.75" Manifold Piping; into 1 X 3.5" Major Pipe. Increase High Flow Air, Instantly Gain 10 -15 Hp. 1 x Set of exhaust header.
All necessary hardware, bolts, and gaskets. The item "STAINLESS STEEL STREET STOCK HEADER EXHAUST MANIFOLD FIT CHEVY SBC 260-400 V8" is in sale since Tuesday, October 8, 2019. This item is in the category "eBay Motors\Parts & Accessories\Car & Truck Parts\Exhaust\Exhaust Manifolds & Headers". The seller is "caesarperformance" and is located in Plano, Texas. 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, 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, Antigua and barbuda, Aruba, Belize, Dominica, Grenada, Saint kitts and nevis, Saint lucia, Turks and caicos islands, Barbados, Bangladesh, Bermuda, Brunei darussalam, Bolivia, Ecuador, Egypt, French guiana, Gibraltar, Guadeloupe, Iceland, Jordan, Cambodia, Cayman islands, Sri lanka, Luxembourg, Martinique, Maldives, Nicaragua, Oman, Peru, Paraguay, Reunion, Viet nam, Uruguay, Russian federation.