Doug's Headers - D564
Headers - Full Length - 1.75 in Primary - 3 in Collector - Gaskets / Hardware Included - Steel - Ceramic - Pontiac V8 - GM A-Body 1964-67 - Pair
Doug's Long Tube Header 64-67 GTO 326-455 1 3/4" Primary 3" Collector Silver Ceramic Coated D564
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 Flange
Collector Diameter: 3.0
Collector Port Diameter: 3.0
Color: Silver
Cylinder Head Port Shape: D-port
Design: Full-length
EGT Port: No
EmissionFullDES: 2 - This product is Legal for use on Pre-Pollution Controlled Vehicles. It is legal for use on all vehicles produced Before Emissions Control Regulations were imposed. These are considered Uncontrolled Vehicles and are defined as follows; 1965 and Older US Manufactured California Certified Vehicles, 1967 and Older US Manufactured Federally Certified Vehicles, 1967 and Older Foreign Manufactured Vehicles
Finish: Metallic Ceramic Coated
Flange Thickness: 0.375
Gasket Or Seal Included: Yes
Gaskets Included: Yes
Grade Type: Performance
Header Material: Steel
Header Style: Full-length
Material: Steel
Mounting Hardware Included: Yes
Oxygen Sensor Port: No
Port Shape: D-port
Primary Tube Outside Diameter: 1.75
Primary Tubing Diameter: 1.75
Sheen Level: Semi-Gloss
Tube Wall Thickness: 16
