{"product_id":"long-tube-headers-for-68-76-amc-290-401-v8-1-3-4in-primary-ceramic-coated-d103","title":"Long Tube Headers for 68-76 AMC 290-401 V8 1-3\/4in Primary Ceramic Coated D103","description":"\u003cp\u003e\u003cstrong\u003eOverview:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e68-76 Various AMC Long Tube Silver Ctd  \u003c\/p\u003e\u003cp\u003eLong tube headers provide the greatest increases in horsepower and torque across the entire RPM spectrum. The choice of racers worldwide, Doug's long tube headers are designed for the car owner who wants maximum power and the highest quality header on the market.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e3\/8\" Thick machined flanges to prevent warping\u003c\/li\u003e\n\u003cli\u003ePrecision formed long transition collectors and long tube design reduces backpressure and increases higher RPM horsepower\u003c\/li\u003e\n\u003cli\u003eHeavy duty 16-gauge tubing for long life\u003c\/li\u003e\n\u003cli\u003eTubes are pre-polished to removed scratches before applying metallic ceramic or hi-temp black coating\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eSpecs:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand: \u003c\/strong\u003eDoug's Headers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCollector Attachment: \u003c\/strong\u003e3-Bolt Flange\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCollector Diameter: \u003c\/strong\u003e3.0 IN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCollector Port Diameter: \u003c\/strong\u003e3.0 IN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCylinder Head Port Shape: \u003c\/strong\u003eSAP\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDesign: \u003c\/strong\u003eFull-length\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEGT Port: \u003c\/strong\u003eNo\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish: \u003c\/strong\u003eMetallic Ceramic Coated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlange Thickness: \u003c\/strong\u003e0.375 IN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGasket Or Seal Included: \u003c\/strong\u003eYes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGaskets Included: \u003c\/strong\u003eYes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrade Type: \u003c\/strong\u003ePerformance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeader Material: \u003c\/strong\u003eSteel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeader Style: \u003c\/strong\u003eFull-length\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial: \u003c\/strong\u003eSteel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Hardware Included: \u003c\/strong\u003eYes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOxygen Sensor Port: \u003c\/strong\u003eNo\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePort Shape: \u003c\/strong\u003eSAP\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Tube Outside Diameter: \u003c\/strong\u003e1.75 IN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Tubing Diameter: \u003c\/strong\u003e1.75 IN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProp 65 (C, R or CR): \u003c\/strong\u003eCR\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProp 65 Yes\/No: \u003c\/strong\u003eYes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSheen Level: \u003c\/strong\u003eSemi-Gloss\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTitle: \u003c\/strong\u003eDoug's Long Tube Header 68-76 Various AMC 290-401 V8 1 3\/4\" Primary 3\" Collector Silver Ceramic Coated D103\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTube Wall Thickness: \u003c\/strong\u003e16 GU\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number: \u003c\/strong\u003eD103\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eApplications:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e1968-1970 AMC Ambassador 390 CID\u003c\/li\u003e\n\u003cli\u003e1970-1974 AMC Ambassador 360 CID\u003c\/li\u003e\n\u003cli\u003e1970-1974 AMC Ambassador 304 CID\u003c\/li\u003e\n\u003cli\u003e1971-1974 AMC Ambassador 401 CID\u003c\/li\u003e\n\u003cli\u003e1979-1979 AMC Spirit 304 CID\u003c\/li\u003e\n\u003cli\u003e1968-1970 AMC Javelin 390 CID\u003c\/li\u003e\n\u003cli\u003e1968-1969 AMC Javelin 290 CID\u003c\/li\u003e\n\u003cli\u003e1968-1969 AMC Javelin 343 CID\u003c\/li\u003e\n\u003cli\u003e1970-1974 AMC Javelin 304 CID\u003c\/li\u003e\n\u003cli\u003e1971-1974 AMC Javelin 401 CID\u003c\/li\u003e\n\u003cli\u003e1968-1970 AMC AMX 390 CID\u003c\/li\u003e\n\u003cli\u003e1968-1969 AMC AMX 290 CID\u003c\/li\u003e\n\u003cli\u003e1968-1969 AMC AMX 343 CID\u003c\/li\u003e\n\u003cli\u003e1970-1970 AMC AMX 360 CID\u003c\/li\u003e\n\u003cli\u003e1972-1976 AMC Gremlin 304 CID\u003c\/li\u003e\n\u003cli\u003e1970-1977 AMC Hornet 304 CID\u003c\/li\u003e\n\u003cli\u003e1971-1974 AMC Hornet 360 CID\u003c\/li\u003e\n\u003cli\u003e1971-1978 AMC Matador 360 CID\u003c\/li\u003e\n\u003cli\u003e1971-1977 AMC Matador 304 CID\u003c\/li\u003e\n\u003cli\u003e1971-1974 AMC Matador 401 CID\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eEmissions:\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eThis Product is LEGAL for Closed Course Competition use or Pre-Emissions Controlled Vehicles ONLY. It is Not Legal for use on any Emissions Controlled Vehicle for Street or Off Highway use.\u003c\/li\u003e \u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eInstructions:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003e\u003ca href=\"https:\/\/prod-da.s3.us-east-2.amazonaws.com\/BHKJ\/a9e8216d4aa891233c7162eda9ae230a.pdf\" target=\"_blank\"\u003eClick here for installation instructions!\u003c\/a\u003e\u003c\/li\u003e\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eFitment Notes: \u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eAMC Motor Only with Dog leg exhaust port.\u003c\/li\u003e\n\u003cli\u003e1968-69 cars require minor modification of passenger side shock tower if using 1970 and newer Tall Deck block. Clearance not an issue with original 68-69 block. (Not an issue on 1970 an later cars)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Doug's Headers","offers":[{"title":"Default Title","offer_id":54508665635029,"sku":"D103-BKLK","price":1020.65,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2493\/0960\/files\/9d7fc8f08fba28a358e8075ef81d10bd.jpg?v=1786703635","url":"https:\/\/moderndaymuffler.com\/products\/long-tube-headers-for-68-76-amc-290-401-v8-1-3-4in-primary-ceramic-coated-d103","provider":"Modern Day Muffler","version":"1.0","type":"link"}