Long Tube Headers for 65-70 Pontiac 326-455 1-3/4in Primary Black Coated D521-B
Long Tube Headers for 65-70 Pontiac 326-455 1-3/4in Primary Black Coated D521-B is backordered and will ship as soon as it is back in stock.
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Fitment
Fitment
Warranty Information
Warranty Information
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Description
Description
Overview:
65-70 Pont 326-455 Long Tube Black Ctd
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.
Features:
- 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
Specs:
- Brand: Doug's Headers
- Collector Attachment: 3-Bolt Flange
- Collector Diameter: 3.0 IN
- Collector Port Diameter: 3.0 IN
- Color: Black
- Cylinder Head Port Shape: D-port
- Design: Full-length
- EGT Port: No
- Finish: Hi-Temp Black Coating
- Flange Thickness: 0.375 IN
- 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 IN
- Primary Tubing Diameter: 1.75 IN
- Prop 65 (C, R or CR): CR
- Prop 65 Yes/No: Yes
- Sheen Level: Matte
- Title: Doug's Long Tube Header 65-70 Pontiac 326-455 1 3/4" Primary 3" Collector Black Hi Temp Coated D521-B
- Tube Wall Thickness: 16 GU
- Part Number: D521-B
Applications:
- 1965-1966 Pontiac Bonneville 389 CID
- 1965-1966 Pontiac Bonneville 421 CID
- 1967-1968 Pontiac Bonneville 400 CID
- 1967-1968 Pontiac Bonneville 428 CID
- 1965-1966 Pontiac Catalina 389 CID
- 1965-1966 Pontiac Catalina 421 CID
- 1967-1968 Pontiac Catalina 400 CID
- 1967-1968 Pontiac Catalina 428 CID
- 1965-1966 Pontiac Grand Prix 389 CID
- 1965-1966 Pontiac Grand Prix 421 CID
- 1967-1968 Pontiac Grand Prix 400 CID
- 1967-1968 Pontiac Grand Prix 428 CID
Emissions:
- This Product is considered а Replacement Part per CARB and EPA regulations for emissions compliance and is legal for sale and use on specified vehicles in all 50 states as stated in Manufacturer's Application Guide and lnstallation Instructions.
Instructions:
Fitment Notes:
- Fits D-Port heads Only.
- Some factory heads do not have end bolt holes and should be drilled and tapped to assure proper sealing.
- with Floor Shifter
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