Doug s Headers D316-B 1 7 8 4-Tube Full Length Header Chevelle Big Block Chevrolet 68-74 Hi-Temp Black Coating Supply

Features & Benefits

• 3 8 Thick machined flanges to prevent warping
• Precision formed long transition collectors and long tube design reduces backpressure and increases higher RPM horsepower
• Heavy duty 16-gauge tubing for long life
• Tubes are pre-polished to removed scratches before applying metallic ceramic or hi-temp black coating

• Long tube headers provide the greatest increases in horsepower and torque across the entire RPM spectrum. The choice of racers worldwide, Doug s long tube headers are designed for the car owner who wants maximum power and the highest quality header on the market.
  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.

  For the enthusiast who demands the best, Doug s Headers are not just components; they re a statement of excellence, a commitment to leading-edge performance, and a nod to the glory days of muscle cars and drag racing. Join the ranks of champions. Experience the unmatched quality and performance of Doug s Headers today.

  Specifications

  Finish		Hi-Temp Black Coating
  Material		Steel
  Design		Full-length
  Primary Tubing Diameter		1.875 IN
  Collector Port Diameter		3.5 IN
  Port Shape		SAP
  Tube Wall Thickness		16 Gauge
  Flange Thickness		0.375 IN
  Collector Attachment		3-Bolt Flange
  EGT Port		No
  Oxygen Sensor Port		No
  Gasket Or Seal Included		Yes
  Mounting Hardware Included		Yes
  Color		Black
  Sheen Level		Matte

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