Long Tube Headers for 70-81 Firebird 455 W/HO/SD/Ram Air Heads only D581-SS
Long Tube Headers for 70-81 Firebird 455 W/HO/SD/Ram Air Heads only D581-SS is backordered and will ship as soon as it is back in stock.
Couldn't load pickup availability
Fitment
Fitment
Warranty Information
Warranty Information
Customer service is our top priority and because we value your time and energy we ask you to visit our Contact Us page and reach out so that we may assist you in finding the correct warranty for your product. Please include your name, the name on the order, the order number, and the SKU of the product to ensure the quickest and most accurate response to your inquiry.
Description
Description
Overview:
70-81 Firebird 455 HO Long Tube Stainless
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:
- Natural stainless-steel finish offers superior resistance to rust and corrosion
- 3/8" thick 304 stainless machine flanges to prevent warping
- CNC 304 stainless mandrel bent tubes for an accurate fit and improved flow
- Precision formed long transition collectors and long tube design reduce backpressure and increase higher RPM horsepower
Specs:
- Brand: Doug's Headers
- Collector Attachment: 3-Bolt Flange
- Collector Diameter: 3.5 IN
- Collector Port Diameter: 3.5 IN
- Color: Silver
- Cylinder Head Port Shape: Round
- Design: Full-length
- EGT Port: No
- Finish: 304 Stainless Steel
- Flange Thickness: 0.375 IN
- Gasket Or Seal Included: Yes
- Gaskets Included: Yes
- Grade Type: Performance
- Header Material: 304 Stainless Steel
- Header Style: Full-length
- Material: 304 Stainless Steel
- Mounting Hardware Included: Yes
- Oxygen Sensor Port: No
- Port Shape: Round
- Primary Tube Outside Diameter: 1.875 IN
- Primary Tubing Diameter: 1.875 IN
- Prop 65 (C, R or CR): CR
- Prop 65 Yes/No: Yes
- Sheen Level: Satin
- Title: Doug's Long Tube Header 70-81 Firebird 455 W/HO/SD/Ram Air Heads only 1 7/8" Primary 3 1/2" Collector 304 Stainless D581-SS
- Tube Wall Thickness: 16 GU
- Part Number: D581-SS
Applications:
- 1970-1979 Pontiac Firebird 350 CID
- 1970-1979 Pontiac Firebird 400 CID
- 1971-1976 Pontiac Firebird 455 CID
- 1977-1979 Pontiac Firebird 403 CID
Emissions:
- 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.
Instructions:
Fitment Notes:
- Requires removal or modification of locking steering columns if equipped.
- Fits Edelbrock Performer RPM, RAM-Air, Super Duty and H.O. Round Port Heads only
- Header will fit with Milodon oil pans 30355, 31660 and 31665
- with Floor Shifter
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
