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Doug's Headers D318

Metallic Ceramic Coated Headers 1978-87 Big Block Chevy 2" Tube Diameter

Doug's Headers D318


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Doug's Headers D318 Metallic Ceramic Coated Headers 1978-87 Big Block Chevy 2" Tube Diameter $756.99
Metallic Ceramic Coated Headers
  • 1978-87 Big Block Chevy
  • 2'' Tube Diameter
  • 3-1/2'' Collector
  • SAP Port Shape

  • Doug's Headers D318 Details

    Big Block Chevy - 2'' Tube Diameter


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

    • 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 vehicle engines (pre-1974 domestic vehicles certified to California standards, pre-1974 domestic vehicles certified to federal standards and all pre-1974 foreign vehicles), per the manufacturer's application guide.

      Y Y Y Y Y N N


    Manufacturer's Part Number:

    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%!

  • 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

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