Black Hi-Temp Coated Headers 1978-87 Big Block Chevy 2" Tube Diameter
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DOUG'S HEADERSPART NUMBER: 776-D318-B

Black Hi-Temp Coated Headers 1978-87 Big Block Chevy 2" Tube Diameter

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Big Block Chevy - 2'' Tube Diameter
Black Hi-Temp Coated Headers
  • 1978-87 Big Block Chevy
  • 2'' Tube Diameter
  • 3-1/2'' Collector
  • SAP Port Shape

    Fits:
    • 1978-87 Chevelle/Malibu/Monte Carlo 396-502

    Notes:
    • Must use stock small block frame stands and motor mounts
    • Fits SAP - Same As (cylinder head) Ports
    • 3/8" Thick machined flanges
    • CNC mandrel bent tubes for accurate fit and better flow
    • Precision formed long transition collectors and long tube design that reduces backpressure and increases higher RPM horsepower
    • Heavy 16 gauge tubing for durability
    • Pre-polished tubes to remove scratches
    • Header is finished with a Metallic Ceramic Thermal Barrier Coating polished to a high luster appearance offering corrosion and heat resistance up to 1400 degrees

      Emission Code:

      • The product accompanying this document is legal only for off-highway use(except in California or states that have adopted California emission standards),racing use or for use on pre-emission-controlled motor vehicles/motor vehicleengines (pre-1974 domestic vehicles certified to California standards, pre-1974domestic vehicles certified to federal standards and all pre-1974 foreignvehicles), per the manufacturer's application guide.

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    Emissions Note:

    This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.

    CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART

  • Every Doug's Header is Tuned with the Proper Tube Size & Length to Efficiently Remove Exhaust Gasses from Each Cylinder

    Headers feature 3/8'' flanges and 16-gauge tubing on passenger car applications. They include all necessary mounting hardware, collector reducers or connection pipes, premium gaskets and detailed instructions. Headers are available in either a Metallic Ceramic Thermal Barrier Coating or a uncoated raw finish. The Metallic Ceramic Thermal Barrier Coating will withstand up to 1400 degree temperatures! This coating is polished which increases corrosion resistance over 60%!

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    Features:

    • Thick Flanges Prevent Warping
    • Stitch Welded Ports for Added Strength
    • Machined Sealing Bead Eliminates Leaks
    • Heavy Gauge Tubing for Longer Life
    • Precision-Formed Collectors Reduce Back Pressure
    • CNC Mandrel-Bent Tubing Provides Accurate Fit & Better Flow

      See More Info for Applications Listing

    Part TypeHeader
    Product LineDoug's Headers for GM Passenger Cars
    BrandDOUG'S HEADERS
    Package Height9.0
    Package Width23.0
    Package Length42.0
    Weight43.0 PG
    Part CategoryPerformance Parts
    Part FitmentSemi Universal
    Primary Tube Outside Diameter2 in (50.8 mm)
    Vendor Part NumberD318-B
    Package Qty1
    Package TypeEA
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    Some parts are not legal for use in California or other states with similar laws / regulations
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