Doug's Headers - D3347

Doug's Headers D3347 1 3/4" 4-Tube Full Length Header Chevrolet LS1 Engine Swap Camaro 67-69 Nova 62-74 48-56 F-100 and Various Street Rods with the TCI Mustang II front clips Metallic Ceramic Coating

Doug's Headers D3347 1 3/4" 4-Tube Full Length Header Chevrolet LS1 Engine Swap Camaro 67-69 Nova 62-74 48-56 F-100 and Various Street Rods with the TCI Mustang II front clips Metallic Ceramic Coating

Part Number: D3347 / UPC 694342547431
Skip to product information

Product Info

  • 3/8" Thick machined flanges... no warping
  • CNC mandrel bent tubes... accurate fit & better flow
  • Precision formed long transition collectors and long tube design... reduces backpressure and increases higher RPM horsepower
  • Heavy 16 gauge tubing... longer life
  • Tubes are pre-polished to remove scratches and the header is finished with a Metallic Ceramic Thermal Barrier Coating polished to a high luster appearance offering corrosion and heat resistance up to 1400 degrees

 

Highlights

  • 3/8" Thick machined flanges... no warping
  • CNC mandrel bent tubes... accurate fit & better flow
  • Precision formed long transition collectors and long tube design... reduces backpressure and increases higher RPM horsepower
  • Heavy 16 gauge tubing... longer life
  • Tubes are pre-polished to remove scratches and the header is finished with a Metallic Ceramic Thermal Barrier Coating polished to a high luster appearance offering corrosion and heat resistance up to 1400 degrees

Additional Information

Doug's PASSENGER CAR HEADERS Long Tube Metallic Ceramic Coated Header development and design is complex and requires a substantial amount of time and resources to do the job right! Many manufacturers are unwilling to make the commitment and instead offer compromised headers at lower prices. Doug's will not compromise performance, quality or fit to compete with inferior designs at cheap prices. Every Doug's header is tuned with the proper tube size and length to efficiently remove all the exhaust from each cylinder, reducing pumping losses resulting in a dramatic increases in horsepower and torque. Doug's headers are carefully developed on the vehicles they are intended to fit and are re-checked numerous times during the design and manufacturing process.

Doug's Headers D3347 1 3/4" 4-Tube Full Length Header Chevrolet LS1 Engine Swap Camaro 67-69 Nova 62-74 48-56 F-100 and Various Street Rods with the TCI Mustang II front clips Metallic Ceramic Coating

Download instruction manual

Instruction Manual
Instruction Manual

Download PDF

Reviews

Doug's Headers - D3347

Doug's Headers D3347 1 3/4" 4-Tube Full Length Header Chevrolet LS1 Engine Swap Camaro 67-69 Nova 62-74 48-56 F-100 and Various Street Rods with the TCI Mustang II front clips Metallic Ceramic Coating

Doug's Headers D3347 1 3/4" 4-Tube Full Length Header Chevrolet LS1 Engine Swap Camaro 67-69 Nova 62-74 48-56 F-100 and Various Street Rods with the TCI Mustang II front clips Metallic Ceramic Coating

Part Number: D3347 / UPC 694342547431
Regular price $849.95
Sale price $849.95 Regular price

Shipping calculated at checkout.
Part Number: D3347 / UPC 694342547431
  • Free shipping on $99+ orders in lower 48 states
  • 90-day return policy
  • We’re here to help! Call us on 909-599-5955
Emissions code

Emissions Code

Continue Reading to Understand Emissions Codes

View full details

Product Info

  • 3/8" Thick machined flanges... no warping
  • CNC mandrel bent tubes... accurate fit & better flow
  • Precision formed long transition collectors and long tube design... reduces backpressure and increases higher RPM horsepower
  • Heavy 16 gauge tubing... longer life
  • Tubes are pre-polished to remove scratches and the header is finished with a Metallic Ceramic Thermal Barrier Coating polished to a high luster appearance offering corrosion and heat resistance up to 1400 degrees

 

Highlights

  • 3/8" Thick machined flanges... no warping
  • CNC mandrel bent tubes... accurate fit & better flow
  • Precision formed long transition collectors and long tube design... reduces backpressure and increases higher RPM horsepower
  • Heavy 16 gauge tubing... longer life
  • Tubes are pre-polished to remove scratches and the header is finished with a Metallic Ceramic Thermal Barrier Coating polished to a high luster appearance offering corrosion and heat resistance up to 1400 degrees

Additional Information

Doug's PASSENGER CAR HEADERS Long Tube Metallic Ceramic Coated Header development and design is complex and requires a substantial amount of time and resources to do the job right! Many manufacturers are unwilling to make the commitment and instead offer compromised headers at lower prices. Doug's will not compromise performance, quality or fit to compete with inferior designs at cheap prices. Every Doug's header is tuned with the proper tube size and length to efficiently remove all the exhaust from each cylinder, reducing pumping losses resulting in a dramatic increases in horsepower and torque. Doug's headers are carefully developed on the vehicles they are intended to fit and are re-checked numerous times during the design and manufacturing process.

Doug's Headers D3347 1 3/4" 4-Tube Full Length Header Chevrolet LS1 Engine Swap Camaro 67-69 Nova 62-74 48-56 F-100 and Various Street Rods with the TCI Mustang II front clips Metallic Ceramic Coating

Download instruction manual

Instruction Manual
Instruction Manual

Download PDF

Reviews

You may also like