{"product_id":"flowtech-upright-headers-11545flt","title":"Flowtech Upright Headers - 11545FLT","description":"Flowtech Headers are the perfect combination of quality and value. These Small Block Chevy Upright headers available in 1-5\/8\" and 1-3\/4\" tube diameters are ideal for even big cubic inch Small Block Chevy engines.\n\nThey feature a merged collector coupled with a collector spear that is welded inside the collector. These components help to improve the flow and performance of the header.\n\u003ch3\u003eFeatures:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCNC Mandrel-bent tubes provide consistent tubing diameters for smooth flow and increases the cylinder scavenging effect and improves engine breathing\u003c\/li\u003e\n\u003cli\u003eHeavy duty 16-gauge 409SS tubing for increased strength and durability\u003c\/li\u003e\n\u003cli\u003e1-5\/8” and 1-3\/4” tubing diameters available for increased exhaust flow increasing performance and improved throttle response\u003c\/li\u003e\n\u003cli\u003e3” collector for maximum strength and exhaust flow\u003c\/li\u003e\n\u003cli\u003eExtra thick header flange for a leak-free seal and maximum strength\u003c\/li\u003e\n\u003cli\u003eWelded-in collector merge spears to control exhaust gas re-entry into primary tubes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eProduct Specifications:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Details:\u003c\/strong\u003e Fits Small Block Chevy, 1-5\/8\" Primary Tubes, 409 Stainless Steel Upright Headers- Natural Finish\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAir Injection Tubes:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Small Block Chevy\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBolt Size:\u003c\/strong\u003e 3\/8-16 x 3\/4 IN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBolts Included:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCalifornia Proposition 65:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCARB (California) Compliant:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCatalytic Converter Quantity:\u003c\/strong\u003e 0\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCollector Attachment:\u003c\/strong\u003e Weld-On\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCollector Diameter:\u003c\/strong\u003e 3.00 IN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCollector Length:\u003c\/strong\u003e 12.00 IN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCollector Port Diameter:\u003c\/strong\u003e 3.00 IN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCollector Reducer Included:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCollector Reducer Outlet Dia.:\u003c\/strong\u003e N\/A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Silver\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDesign:\u003c\/strong\u003e Upright\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrive:\u003c\/strong\u003e 2WD, 4WD\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEGT Port:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine:\u003c\/strong\u003e Chevrolet Small Block Gen I\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Natural\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlange Thickness:\u003c\/strong\u003e 0.375 IN, 3\/8 IN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGasket Or Seal Included:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrade Type:\u003c\/strong\u003e Performance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeader Series:\u003c\/strong\u003e Flowtech\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeader Style:\u003c\/strong\u003e Upright\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstalled Height:\u003c\/strong\u003e 37.00 IN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e 304 Stainless Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Hardware Included:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOxygen Sensor Port:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Type:\u003c\/strong\u003e Exhaust Header\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePort Shape:\u003c\/strong\u003e Square\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Tubing Diameter:\u003c\/strong\u003e 1 5\/8 IN, 1.625 IN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Headers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e Sold as a Pair\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSheen Level:\u003c\/strong\u003e Semi-Gloss\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTube Wall Thickness:\u003c\/strong\u003e 16 GU\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eInstallation Notes:\u003c\/h3\u003e\n\u003cp\u003eGaskets and hardware sold separately.\u003c\/p\u003e","brand":"Flowtech","offers":[{"title":"Default Title","offer_id":49707985961198,"sku":"BIG-11545FLT","price":415.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0819\/9110\/6798\/files\/a735c26d3d572f3b5ff648799764e6a2d04e648f.jpg?v=1791491433","url":"https:\/\/elmosspeedshop.com\/products\/flowtech-upright-headers-11545flt","provider":"Elmo's Speed Shop","version":"1.0","type":"link"}