{"product_id":"mid-length-headers-for-64-92-gm-f-g-a-body-265-400-sbc-1-5-8in-primary-d304-b","title":"Mid-Length Headers for 64-92 GM F G\/A Body 265-400 SBC 1-5\/8in Primary D304-B","description":"\u003cp\u003e\u003cstrong\u003eOverview:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e64-92 GM F, G, \u0026amp; A Body SBC Mid Length Black\u003c\/p\u003e\u003cp\u003eMid-Length Headers, often called Clipsters, are engineered to provide superior performance gains over Manifold Replacements or Block Hugger style headers. These headers enhance your vehicles's horsepower and torque while preserving ground clearance for cars with a lowered stance and trucks where long tube headers may hang to low.\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\u003eCNC mandrel bent tubes for ensuring accurate fit and optimal flow\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\u003eBlack\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\u003eMid 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\u003eHi-Temp Black Coating\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\u003eMid 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\u003eMatte\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTitle: \u003c\/strong\u003eDoug's Mid Length Header 64-92 GM F, G, \u0026amp; A Body 265-400 SBC 1 5\/8\" Primary 2 1\/2\" Collector Black Hi Temp Coated D304-B\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\u003eD304-B\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eApplications:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e1977-1981 Buick Century 305 CID\u003c\/li\u003e\n\u003cli\u003e1978-1979 Buick Century 350 CID\u003c\/li\u003e\n\u003cli\u003e1978-1987 Buick Regal 305 CID\u003c\/li\u003e\n\u003cli\u003e1970-1972 Chevrolet Biscayne 350 CID\u003c\/li\u003e\n\u003cli\u003e1970-1972 Chevrolet Biscayne 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\u003e1964-1967 Chevrolet Chevelle 283 CID\u003c\/li\u003e\n\u003cli\u003e1964-1967 Chevrolet Chevelle 327 CID\u003c\/li\u003e\n\u003cli\u003e1968-1972 Chevrolet Chevelle 307 CID\u003c\/li\u003e\n\u003cli\u003e1970-1972 Chevrolet Chevelle 400 CID\u003c\/li\u003e\n\u003cli\u003e1971-1975 Chevrolet Bel Air 350 CID\u003c\/li\u003e\n\u003cli\u003e1971-1975 Chevrolet Bel Air 400 CID\u003c\/li\u003e\n\u003cli\u003e1981-1981 Chevrolet Bel Air 305 CID\u003c\/li\u003e\n\u003cli\u003e1967-1981 Chevrolet Camaro 350 CID\u003c\/li\u003e\n\u003cli\u003e1967-1969 Chevrolet Camaro 327 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\u003e1975-1994 Chevrolet Caprice 350 CID\u003c\/li\u003e\n\u003cli\u003e1975-1976 Chevrolet Caprice 400 CID\u003c\/li\u003e\n\u003cli\u003e1977-1993 Chevrolet Caprice 305 CID\u003c\/li\u003e\n\u003cli\u003e1980-1982 Chevrolet Caprice 267 CID\u003c\/li\u003e\n\u003cli\u003e1986-1990 Chevrolet Caprice 307 CID\u003c\/li\u003e\n\u003cli\u003e1994-1994 Chevrolet Caprice 265 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\u003e1968-1984 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\u003e1976-1987 Chevrolet El Camino 305 CID\u003c\/li\u003e\n\u003cli\u003e1979-1982 Chevrolet El Camino 267 CID\u003c\/li\u003e\n\u003cli\u003e1971-1994 Chevrolet Impala 350 CID\u003c\/li\u003e\n\u003cli\u003e1971-1976 Chevrolet Impala 400 CID\u003c\/li\u003e\n\u003cli\u003e1971-1973 Chevrolet Impala 307 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\u003e1975-1976 Chevrolet Laguna 350 CID\u003c\/li\u003e\n\u003cli\u003e1975-1976 Chevrolet Laguna 400 CID\u003c\/li\u003e\n\u003cli\u003e1976-1976 Chevrolet Laguna 305 CID\u003c\/li\u003e\n\u003cli\u003e1964-1967 Chevrolet Malibu 327 CID\u003c\/li\u003e\n\u003cli\u003e1964-1967 Chevrolet Malibu 283 CID\u003c\/li\u003e\n\u003cli\u003e1973-1983 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\u003e1976-1983 Chevrolet Malibu 305 CID\u003c\/li\u003e\n\u003cli\u003e1979-1982 Chevrolet Malibu 267 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\u003e1978-1984 Oldsmobile Cutlass Calais 305 CID\u003c\/li\u003e\n\u003cli\u003e1978-1987 Oldsmobile Cutlass 305 CID\u003c\/li\u003e\n\u003cli\u003e1978-1979 Oldsmobile Cutlass 350 CID\u003c\/li\u003e\n\u003cli\u003e1978-1980 Oldsmobile Cutlass Salon 305 CID\u003c\/li\u003e\n\u003cli\u003e1980-1983 Oldsmobile Cutlass Cruiser 305 CID\u003c\/li\u003e\n\u003cli\u003e1978-1987 Oldsmobile Cutlass Supreme 305 CID\u003c\/li\u003e\n\u003cli\u003e1978-1978 Oldsmobile Cutlass Supreme 350 CID\u003c\/li\u003e\n\u003cli\u003e1983-1986 Pontiac Bonneville 305 CID\u003c\/li\u003e\n\u003cli\u003e1980-1981 Pontiac Catalina 305 CID\u003c\/li\u003e\n\u003cli\u003e1977-1981 Pontiac Firebird 305 CID\u003c\/li\u003e\n\u003cli\u003e1978-1979 Pontiac Firebird 350 CID\u003c\/li\u003e\n\u003cli\u003e1978-1987 Pontiac Grand Prix 305 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 use on Pre-Pollution Controlled Vehicles. It is legal for use on all vehicles produced Before Emissions Control Regulations were imposed. These are considered Uncontrolled Vehicles and are defined as follows\u003cul\u003e\n\u003cli\u003e1965 and Older US Manufactured California Certified Vehicles\u003c\/li\u003e\n\u003cli\u003e1967 and Older US Manufactured Federally Certified Vehicles\u003c\/li\u003e\n\u003cli\u003e1967 and Older Foreign Manufactured Vehicles\u003c\/li\u003e\n\u003c\/ul\u003e\n\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\/a65bf004a76b1bd89f634222be4f9d41.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. Fits D-Port cylinder heads including ZZ4 crate engines. Will Not fit GM Fast Burn head PN 19300955 or SP350, SP383 and ZZ6 engines. Fits Factory Installed Chevrolet 265-350 small block engines\u003c\/li\u003e\n\u003cli\u003eDoes not fit 67-69 Camaro with A\/C. Will not fit 67-69 Camaro or 68-74 Nova with Factory Saginaw 800 power steering box\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. 1979 and later vehicles with short compressors can use the stock bracket.\u003c\/li\u003e\n\u003cli\u003eMust use non-shell type motor mounts. Will fit OE Suspension and Detroit Speed and Engineering front subframes on 67-69 Camaro and 68-74 Nova with rack steering\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Doug's Headers","offers":[{"title":"Default Title","offer_id":54508684476629,"sku":"D304-B-BKLK","price":781.4,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2493\/0960\/files\/7c51a365e99387f6c02c353a646841bf.jpg?v=1786704088","url":"https:\/\/moderndaymuffler.com\/products\/mid-length-headers-for-64-92-gm-f-g-a-body-265-400-sbc-1-5-8in-primary-d304-b","provider":"Modern Day Muffler","version":"1.0","type":"link"}