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Doug's Headers  |  SKU: D354-B-BKLK

Long Tube Headers for 55-57 Chevy 396-502 BBC 2in Primary Black Coated D354-B

Regular price $940.55 USD
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Please see description for full fitment notes!!!

Fitment

Warranty Information

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Description

Overview:

55-57 Chevy BBC 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: 3.5 IN
  • Collector Port Diameter: 3.5 IN
  • Color: Black
  • Cylinder Head Port Shape: SAP
  • 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: Round
  • Primary Tube Outside Diameter: 2.0 IN
  • Primary Tubing Diameter: 2.0 IN
  • Prop 65 (C, R or CR): CR
  • Prop 65 Yes/No: Yes
  • Sheen Level: Matte
  • Title: Doug's Long Tube Header 55-57 Chevy 396-502 BBC 2" Primary 3 1/2" Collector Black Hi Temp Coated D354-B
  • Tube Wall Thickness: 16 GU
  • Part Number: D354-B

Emissions:

  • 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

Instructions:

Fitment Notes:

  • Will not fit if engine is located more than 3/4 in forward for HEI firewall clearance. Fits with Trans Dapt PN 4195 or 4177, Danchuck PN 871, 12184, 17756, 17757, and 16339 or equivalent.
  • Original bellhousing frame mounts must be removed.
  • Will fit with 605 power steering box.
  • Does not fit 4 speed applications with Factory Side bell housing mounts.

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