Mid-Length Headers for 64-92 GM F G/A Body 265-400 SBC 1-5/8in Primary D304

Overview:

64-92 GM F, G, & A Body SBC Mid Length Silver

Mid-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. This 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.

Features:

• 3/8" Thick machined flanges to prevent warping
• CNC mandrel bent tubes for ensuring accurate fit and optimal flow
• Heavy duty 16-gauge tubing for long life
• Tubes are pre-polished to removed scratches before applying metallic ceramic or hi-temp black coating

Specs:

• Brand: Doug's Headers
• Collector Attachment: 3-Bolt Flange
• Collector Diameter: 3.0 IN
• Collector Port Diameter: 3.0 IN
• Color: Silver
• Cylinder Head Port Shape: Oval
• Design: Mid Length
• EGT Port: No
• Finish: Metallic Ceramic Coated
• Flange Thickness: 0.375 IN
• Gasket Or Seal Included: Yes
• Gaskets Included: Yes
• Grade Type: Performance
• Header Material: Steel
• Header Style: Mid Length
• Material: Steel
• Mounting Hardware Included: Yes
• Oxygen Sensor Port: No
• Port Shape: Oval
• Primary Tube Outside Diameter: 1.625 IN
• Primary Tubing Diameter: 1.625 IN
• Prop 65 (C, R or CR): CR
• Prop 65 Yes/No: Yes
• Sheen Level: Semi-Gloss
• Title: Doug's Mid Length Header 64-92 GM F, G, & A Body 265-400 SBC 1 5/8" Primary 2 1/2" Collector Silver Ceramic Coated D304
• Tube Wall Thickness: 16 GU
• Part Number: D304

Applications:

• 1977-1981 Buick Century 305 CID
• 1978-1979 Buick Century 350 CID
• 1978-1987 Buick Regal 305 CID
• 1970-1972 Chevrolet Biscayne 350 CID
• 1970-1972 Chevrolet Biscayne 400 CID
• 1968-1968 Chevrolet Chevy II 307 CID
• 1968-1968 Chevrolet Chevy II 327 CID
• 1964-1967 Chevrolet Chevelle 283 CID
• 1964-1967 Chevrolet Chevelle 327 CID
• 1968-1972 Chevrolet Chevelle 307 CID
• 1970-1972 Chevrolet Chevelle 400 CID
• 1971-1975 Chevrolet Bel Air 350 CID
• 1971-1975 Chevrolet Bel Air 400 CID
• 1981-1981 Chevrolet Bel Air 305 CID
• 1967-1981 Chevrolet Camaro 350 CID
• 1967-1969 Chevrolet Camaro 327 CID
• 1976-1981 Chevrolet Camaro 305 CID
• 1980-1981 Chevrolet Camaro 267 CID
• 1975-1994 Chevrolet Caprice 350 CID
• 1975-1976 Chevrolet Caprice 400 CID
• 1977-1993 Chevrolet Caprice 305 CID
• 1980-1982 Chevrolet Caprice 267 CID
• 1986-1990 Chevrolet Caprice 307 CID
• 1994-1994 Chevrolet Caprice 265 CID
• 1964-1969 Chevrolet El Camino 327 CID
• 1964-1967 Chevrolet El Camino 283 CID
• 1968-1984 Chevrolet El Camino 350 CID
• 1968-1973 Chevrolet El Camino 307 CID
• 1970-1976 Chevrolet El Camino 400 CID
• 1976-1987 Chevrolet El Camino 305 CID
• 1979-1982 Chevrolet El Camino 267 CID
• 1971-1994 Chevrolet Impala 350 CID
• 1971-1976 Chevrolet Impala 400 CID
• 1971-1973 Chevrolet Impala 307 CID
• 1977-1985 Chevrolet Impala 305 CID
• 1980-1982 Chevrolet Impala 267 CID
• 1975-1976 Chevrolet Laguna 350 CID
• 1975-1976 Chevrolet Laguna 400 CID
• 1976-1976 Chevrolet Laguna 305 CID
• 1964-1967 Chevrolet Malibu 283 CID
• 1964-1967 Chevrolet Malibu 327 CID
• 1973-1983 Chevrolet Malibu 350 CID
• 1973-1976 Chevrolet Malibu 400 CID
• 1973-1973 Chevrolet Malibu 307 CID
• 1976-1983 Chevrolet Malibu 305 CID
• 1979-1982 Chevrolet Malibu 267 CID
• 1970-1984 Chevrolet Monte Carlo 350 CID
• 1970-1976 Chevrolet Monte Carlo 400 CID
• 1976-1988 Chevrolet Monte Carlo 305 CID
• 1979-1982 Chevrolet Monte Carlo 267 CID
• 1969-1979 Chevrolet Nova 350 CID
• 1969-1973 Chevrolet Nova 307 CID
• 1976-1979 Chevrolet Nova 305 CID
• 1978-1984 Oldsmobile Cutlass Calais 305 CID
• 1978-1987 Oldsmobile Cutlass 305 CID
• 1978-1979 Oldsmobile Cutlass 350 CID
• 1978-1980 Oldsmobile Cutlass Salon 305 CID
• 1980-1983 Oldsmobile Cutlass Cruiser 305 CID
• 1978-1987 Oldsmobile Cutlass Supreme 305 CID
• 1978-1978 Oldsmobile Cutlass Supreme 350 CID
• 1983-1986 Pontiac Bonneville 305 CID
• 1980-1981 Pontiac Catalina 305 CID
• 1977-1981 Pontiac Firebird 305 CID
• 1978-1979 Pontiac Firebird 350 CID
• 1978-1987 Pontiac Grand Prix 305 CID

Emissions:

• This 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.

Instructions:

• Click here for installation instructions!

Fitment Notes:

• Fits 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
• Does 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
• Requires removal or modification of locking steering columns if equipped.
• Installation requires left side A/C bracket part number H7608. 1979 and later vehicles with short compressors can use the stock bracket.
• Must 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