{"product_id":"long-tube-headers-for-67-77-gm-f-g-a-265-400-sbc-non-cat-no-egr-or-a-i-r-d308","title":"Long Tube Headers for 67-77 GM F G\/A 265-400 SBC Non Cat no EGR or A.I.R. D308","description":"\u003cp\u003e\u003cstrong\u003eOverview:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e67-77 GM F, G, \u0026amp; A Body SBC Long Tube Slvr\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.\r\nThis fitment is tailored for popular aftermarket engine swap kits. Doug's engine swap headers were developed to solve common fitment issues in tight spaces, making your swap process smoother. No more guesswork or modifications needed - just straightforward installations that save you time and frustration.\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\u003eColor: \u003c\/strong\u003eSilver\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCylinder Head Port Shape: \u003c\/strong\u003eOval\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\u003eOval\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Tube Outside Diameter: \u003c\/strong\u003e1.625 IN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Tubing Diameter: \u003c\/strong\u003e1.625 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 67-77 GM F, G, \u0026amp; A Body 265-400 SBC Non Cat, no EGR or A.I.R. 1 5\/8\" Primary 3\" Collector Silver Ceramic Coated D308\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\u003eD308\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eApplications:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e1965-1969 Chevrolet Biscayne 327 CID\u003c\/li\u003e\n\u003cli\u003e1965-1967 Chevrolet Biscayne 283 CID\u003c\/li\u003e\n\u003cli\u003e1968-1968 Chevrolet Biscayne 307 CID\u003c\/li\u003e\n\u003cli\u003e1969-1972 Chevrolet Biscayne 350 CID\u003c\/li\u003e\n\u003cli\u003e1970-1972 Chevrolet Biscayne 400 CID\u003c\/li\u003e\n\u003cli\u003e1969-1972 Chevrolet Brookwood 350 CID\u003c\/li\u003e\n\u003cli\u003e1969-1972 Chevrolet Brookwood 307 CID\u003c\/li\u003e\n\u003cli\u003e1970-1972 Chevrolet Brookwood 400 CID\u003c\/li\u003e\n\u003cli\u003e1968-1968 Chevrolet Chevy II 307 CID\u003c\/li\u003e\n\u003cli\u003e1968-1968 Chevrolet Chevy II 327 CID\u003c\/li\u003e\n\u003cli\u003e1969-1972 Chevrolet Kingswood 350 CID\u003c\/li\u003e\n\u003cli\u003e1969-1972 Chevrolet Kingswood 307 CID\u003c\/li\u003e\n\u003cli\u003e1970-1972 Chevrolet Kingswood 400 CID\u003c\/li\u003e\n\u003cli\u003e1964-1968 Chevrolet Chevelle 327 CID\u003c\/li\u003e\n\u003cli\u003e1964-1967 Chevrolet Chevelle 283 CID\u003c\/li\u003e\n\u003cli\u003e1968-1973 Chevrolet Chevelle 307 CID\u003c\/li\u003e\n\u003cli\u003e1968-1973 Chevrolet Chevelle 350 CID\u003c\/li\u003e\n\u003cli\u003e1970-1973 Chevrolet Chevelle 400 CID\u003c\/li\u003e\n\u003cli\u003e1965-1969 Chevrolet Bel Air 327 CID\u003c\/li\u003e\n\u003cli\u003e1965-1967 Chevrolet Bel Air 283 CID\u003c\/li\u003e\n\u003cli\u003e1968-1968 Chevrolet Bel Air 307 CID\u003c\/li\u003e\n\u003cli\u003e1969-1975 Chevrolet Bel Air 350 CID\u003c\/li\u003e\n\u003cli\u003e1970-1975 Chevrolet Bel Air 400 CID\u003c\/li\u003e\n\u003cli\u003e1967-1981 Chevrolet Camaro 350 CID\u003c\/li\u003e\n\u003cli\u003e1967-1969 Chevrolet Camaro 302 CID\u003c\/li\u003e\n\u003cli\u003e1967-1969 Chevrolet Camaro 327 CID\u003c\/li\u003e\n\u003cli\u003e1969-1973 Chevrolet Camaro 307 CID\u003c\/li\u003e\n\u003cli\u003e1976-1981 Chevrolet Camaro 305 CID\u003c\/li\u003e\n\u003cli\u003e1980-1981 Chevrolet Camaro 267 CID\u003c\/li\u003e\n\u003cli\u003e1966-1969 Chevrolet Caprice 327 CID\u003c\/li\u003e\n\u003cli\u003e1966-1967 Chevrolet Caprice 283 CID\u003c\/li\u003e\n\u003cli\u003e1968-1989 Chevrolet Caprice 307 CID\u003c\/li\u003e\n\u003cli\u003e1970-1976 Chevrolet Caprice 400 CID\u003c\/li\u003e\n\u003cli\u003e1975-1989 Chevrolet Caprice 350 CID\u003c\/li\u003e\n\u003cli\u003e1977-1989 Chevrolet Caprice 305 CID\u003c\/li\u003e\n\u003cli\u003e1980-1982 Chevrolet Caprice 267 CID\u003c\/li\u003e\n\u003cli\u003e1964-1969 Chevrolet El Camino 327 CID\u003c\/li\u003e\n\u003cli\u003e1964-1967 Chevrolet El Camino 283 CID\u003c\/li\u003e\n\u003cli\u003e1968-1977 Chevrolet El Camino 350 CID\u003c\/li\u003e\n\u003cli\u003e1968-1973 Chevrolet El Camino 307 CID\u003c\/li\u003e\n\u003cli\u003e1970-1976 Chevrolet El Camino 400 CID\u003c\/li\u003e\n\u003cli\u003e1976-1977 Chevrolet El Camino 305 CID\u003c\/li\u003e\n\u003cli\u003e1965-1969 Chevrolet Impala 327 CID\u003c\/li\u003e\n\u003cli\u003e1965-1967 Chevrolet Impala 283 CID\u003c\/li\u003e\n\u003cli\u003e1968-1973 Chevrolet Impala 307 CID\u003c\/li\u003e\n\u003cli\u003e1969-1985 Chevrolet Impala 350 CID\u003c\/li\u003e\n\u003cli\u003e1970-1976 Chevrolet Impala 400 CID\u003c\/li\u003e\n\u003cli\u003e1977-1985 Chevrolet Impala 305 CID\u003c\/li\u003e\n\u003cli\u003e1980-1982 Chevrolet Impala 267 CID\u003c\/li\u003e\n\u003cli\u003e1973-1976 Chevrolet Laguna 350 CID\u003c\/li\u003e\n\u003cli\u003e1973-1976 Chevrolet Laguna 400 CID\u003c\/li\u003e\n\u003cli\u003e1976-1976 Chevrolet Laguna 305 CID\u003c\/li\u003e\n\u003cli\u003e1964-1967 Chevrolet Malibu 283 CID\u003c\/li\u003e\n\u003cli\u003e1964-1967 Chevrolet Malibu 327 CID\u003c\/li\u003e\n\u003cli\u003e1973-1977 Chevrolet Malibu 350 CID\u003c\/li\u003e\n\u003cli\u003e1973-1976 Chevrolet Malibu 400 CID\u003c\/li\u003e\n\u003cli\u003e1973-1973 Chevrolet Malibu 307 CID\u003c\/li\u003e\n\u003cli\u003e1976-1977 Chevrolet Malibu 305 CID\u003c\/li\u003e\n\u003cli\u003e1970-1984 Chevrolet Monte Carlo 350 CID\u003c\/li\u003e\n\u003cli\u003e1970-1976 Chevrolet Monte Carlo 400 CID\u003c\/li\u003e\n\u003cli\u003e1976-1988 Chevrolet Monte Carlo 305 CID\u003c\/li\u003e\n\u003cli\u003e1979-1982 Chevrolet Monte Carlo 267 CID\u003c\/li\u003e\n\u003cli\u003e1969-1979 Chevrolet Nova 350 CID\u003c\/li\u003e\n\u003cli\u003e1969-1973 Chevrolet Nova 307 CID\u003c\/li\u003e\n\u003cli\u003e1976-1979 Chevrolet Nova 305 CID\u003c\/li\u003e\n\u003cli\u003e1971-1977 GMC Sprint 350 CID\u003c\/li\u003e\n\u003cli\u003e1971-1973 GMC Sprint 307 CID\u003c\/li\u003e\n\u003cli\u003e1971-1976 GMC Sprint 400 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\/00d890d88d9bddeb379d018dccfd0bdc.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\u003eFits most angle plug heads.\u003c\/li\u003e\n\u003cli\u003eFits D-Port cylinder heads including ZZ4 crate engines. Will Not fit GM Fast Burn head PN 19300955 or SP350, SP383 and ZZ6 engines.\u003c\/li\u003e\n\u003cli\u003eRequires removal or modification of locking steering columns if equipped.\u003c\/li\u003e\n\u003cli\u003eInstallation requires left side A\/C bracket part number H7608.\u003c\/li\u003e\n\u003cli\u003e267 CID applications must use non-shell type motor mounts\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Doug's Headers","offers":[{"title":"Default Title","offer_id":54508694307029,"sku":"D308-BKLK","price":974.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2493\/0960\/files\/bb136da56d5f7866dd296cb773016321.jpg?v=1786705071","url":"https:\/\/moderndaymuffler.com\/products\/long-tube-headers-for-67-77-gm-f-g-a-265-400-sbc-non-cat-no-egr-or-a-i-r-d308","provider":"Modern Day Muffler","version":"1.0","type":"link"}