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Product Summary

396, 402, 427, 454, 400, 455, 400, Ceramic Coated

    Key Specs

    MFG. Part #D313
    BrandDougs Headers
    Header Tube TypeFull-length
    FinishCeramic Coated
    Material TypeSteel

    Need To Know

    This Product Will Ship Free

    Shipping Policies & FAQs

    Quick and Easy Returns

    Return Policy

    Details

    Coated Header for Chevy

    • Camaro (67-74) 396-502
    • Chevelle (65-72) 396-502
    • Chevy II, Nova (68-74) 396-502
    • El Camino (65-72) 396-502
    • Monte Carlo (70-74) 396-502
    • Passenger Car, Wagon (68-74) 396-502

    This part comes standard with Metallic Ceramic Thermal Barrier Coating (MCTBC). MCTBC protects and extends the life of headers by creating a thermal barrier that significantly lowers underhood temperatures and protects the substrate metal from thermal fatigue. It also provide corrosion resistance to protect it for years to come.

    Please see our online catalog for specific application information.

    Every Dougs header is tuned with the proper tube size and length to efficiently remove all the exhaust from each cylinder, reducing pumping losses resulting in a dramatic increases in horsepower and torque. Dougs headers are carefully developed on the vehicles they are intended to fit and are re-checked numerous times during the design and manufacturing process.Every Dougs header is tuned with the proper tube size and length to efficiently remove all the exhaust from each cylinder, reducing pumping losses resulting in a dramatic increases in horsepower and torque. Dougs headers are carefully developed on the vehicles they are intended to fit and are re-checked numerous times during the design and manufacturing process.

    • 3/8" Thick machined flanges... no warping
    • CNC mandrel bent tubes... accurate fit & better flow
    • Precision formed long transition collectors and long tube design... reduces backpressure and increases higher RPM horsepower
    • Heavy 16 gauge tubing... longer life
    • Tubes are pre-polished to remove scratches and the header isfinished with a Metallic Ceramic Thermal Barrier Coating polished to a high luster appearance offering corrosion and heat resistance up to 1400 degrees
    • Doug's Headers D313 1 3/4" 4-Tube Full Length Header Chevrolet Camaro Big Block Chevrolet 67-74 Metallic Ceramic Coating
    • Ceramic Coated
    • Collector: 3
    • Port: SAP
    • Primary: 1 3/4
    • Requires Big block frame stands and mounts
    • Does not fit w/ power glide trans
    • exc. states w/Calif. emission stds
    • Will not fit with Saginaw 825 Steering Box
    • with A/C
    • For Off-Road Use Only
    • with Column Shift
    • with floor shifter
    • Doug's Headers D313 1 3/4" 4-Tube Full Length Header Chevrolet Camaro Big Block Chevrolet 67-74 Metallic Ceramic Coating
    • Ceramic Coated
    • Collector: 3
    • Port: SAP
    • Primary: 1 3/4
    • Requires Big block frame stands and mounts
    • Does not fit w/ power glide trans
    • exc. states w/Calif. emission stds
    • Will not fit with Saginaw 825 Steering Box
    • with A/C
    • For Off-Road Use Only
    • with Column Shift
    • with floor shifter

    Application

    1968-1969 Chevrolet Bel Air 6.5L/396 V8
    1971-1972 Chevrolet Bel Air 6.6L/402 V8
    1968-1969 Chevrolet Bel Air 7L/427 V8
    1967-1969 Chevrolet Camaro 6.5L/396 V8
    1970-1972 Chevrolet Camaro 6.6L/402 V8
    1969 Chevrolet Camaro 7L/427 V8
    1968-1969 Chevrolet Caprice 6.5L/396 V8
    1971-1972 Chevrolet Caprice 6.6L/402 V8
    1968-1969 Chevrolet Caprice 7L/427 V8
    1965-1969 Chevrolet Chevelle 6.5L/396 V8
    1970-1973 Chevrolet Chevelle 6.6L/400 V8
    1970-1972 Chevrolet Chevelle 6.6L/402 V8
    1970-1973 Chevrolet Chevelle 7.4L/454 V8
    1968 Chevrolet Chevy II 6.5L/396 V8
    1968-1969 Chevrolet Corvette 7L/427 V8
    1966-1969 Chevrolet El Camino 6.5L/396 V8
    1970-1976 Chevrolet El Camino 6.6L/400 V8
    1970-1972 Chevrolet El Camino 6.6L/402 V8
    1970-1974 Chevrolet El Camino 7.4L/454 V8
    1968-1969 Chevrolet Impala 6.5L/396 V8
    1971-1972 Chevrolet Impala 6.6L/402 V8
    1968-1969 Chevrolet Impala 7L/427 V8
    1965-1967 Chevrolet Malibu 6.5L/396 V8
    1973-1976 Chevrolet Malibu 6.6L/400 V8
    1973-1974 Chevrolet Malibu 7.4L/454 V8
    1970-1974 Chevrolet Monte Carlo 6.6L/400 V8
    1970-1972 Chevrolet Monte Carlo 6.6L/402 V8
    1970-1974 Chevrolet Monte Carlo 7.4L/454 V8
    1969 Chevrolet Nova 6.5L/396 V8
    1970-1972 Chevrolet Nova 6.6L/402 V8
    1970-1971 Chevrolet Nova 7.4L/454 V8
    1967-1973 Pontiac Firebird 6.6L/400 V8
    1971-1973 Pontiac Firebird 7.5L/455 V8

    Charts

    CARB Warning

    For use on pre-1966 vehicles only

    Emissions warning: this part only legal for sale or use in California if installed in vehicles model-year 1965 or older; motorcycles model-year 1977 or older; or off-highway recreational vehicles (such as off-road motorcycles and all-terrain vehicles) model-year 1996 and older. ++any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering there are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.

    Specifications

    KEY SPECS
    MFG. Part #D313
    BrandDougs Headers
    Header Tube TypeFull-length
    FinishCeramic Coated
    Material TypeSteel
    GENERAL
    Flange StyleStandard
    Primary Tube Diameter1-3/4"
    ColorSilver
    Weld-UpNo
    Exhaust Port ShapeOval
    Collector Diameter3 Inch
    Hardware IncludedYes
    Gasket(s) IncludedYes
    Sold in QuantityPair
    GTIN Code694342507169