Doug’s Headers D570 – 1 3/4″ 4-Tube Full Length Header Pontiac Firebird 326-455 70-81 Metallic Ceramic Coating

Headers – Full Length – 1.75 in Primary – 3 in Collector – Gaskets / Hardware Included – Steel – Ceramic – Pontiac V8 – GM F-Body 1970-79 – Pair

Doug’s Long Tube Header 70-81 Firebird 326-455 1 3/4″ Primary 3″ Collector Silver Ceramic Coated D570

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.

• 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

Collector Attachment: 3-Bolt FlangeCollector Diameter: 3.0Collector Port Diameter: 3.0Color: SilverCylinder Head Port Shape: D-portDesign: Full-lengthEGT Port: NoEmissionFullDES: 3 – 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.Finish: Metallic Ceramic CoatedFlange Thickness: 0.375Gasket Or Seal Included: YesGaskets Included: YesGrade Type: PerformanceHeader Material: SteelHeader Style: Full-lengthMaterial: SteelMounting Hardware Included: YesOxygen Sensor Port: NoPort Shape: D-portPrimary Tube Outside Diameter: 1.75Primary Tubing Diameter: 1.75Sheen Level: Semi-GlossTube Wall Thickness: 16