Metallic Ceramic Coated Headers 1955-57 GM LS1/LS6 1-7/8" Tube Diameter
InfoVehicle Info Needed
DOUG'S HEADERSPART NUMBER: 776-D311

Metallic Ceramic Coated Headers 1955-57 GM LS1/LS6 1-7/8" Tube Diameter

$75488$838.75You Save$83.87
ShippingShips on 09/10/2026
Lowest PriceLowest Price Guarantee

GM LS1/LS6 - 1-7/8'' Tube Diameter
Metallic Ceramic Coated Headers
  • 1955-57 GM LS1/LS6
  • 1-7/8'' Tube Diameter
  • 3'' Collector
  • SAP Port Shape

    Fits:
    • 1955-57 Passenger Car, Wagon

    Notes:

    • Shorty design for maximum ground clearance.
    • O2 bungs are welded on both collectors.
    • Requires use of Street & Performance (or equivalent) billet aluminum adaptors, along with D & P Chassis (or equilvalent) Chevy frame stands.
    • LS1/LS6 engines require the use of a LS1 oil pan for proper header fit.
    • Will fit with 605 power steering box.

    Emission Code:

    • The product accompanying this document is legal only for off-highway use(except in California or states that have adopted California emission standards),racing use or for use on pre-emission-controlled motor vehicles/motor vehicleengines (pre-1974 domestic vehicles certified to California standards, pre-1974domestic vehicles certified to federal standards and all pre-1974 foreignvehicles), per the manufacturer's application guide.
    AutomaticManual
    A/CP/BP/SColumnFloorColumnFloor
    YYYYYNY

    Emissions Note:

    This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.

    CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART

  • Every Doug's Header is Tuned with the Proper Tube Size & Length to Efficiently Remove Exhaust Gasses from Each Cylinder

    Headers feature 3/8'' flanges and 16-gauge tubing on passenger car applications. They include all necessary mounting hardware, collector reducers or connection pipes, premium gaskets and detailed instructions. Headers are available in either a Metallic Ceramic Thermal Barrier Coating or a uncoated raw finish. The Metallic Ceramic Thermal Barrier Coating will withstand up to 1400 degree temperatures! This coating is polished which increases corrosion resistance over 60%!

    Show More

    Features:

    • Thick Flanges Prevent Warping
    • Stitch Welded Ports for Added Strength
    • Machined Sealing Bead Eliminates Leaks
    • Heavy Gauge Tubing for Longer Life
    • Precision-Formed Collectors Reduce Back Pressure
    • CNC Mandrel-Bent Tubing Provides Accurate Fit & Better Flow

      See More Info for Applications Listing

    Part TypeHeader
    Product LineDoug's Headers for GM Passenger Cars
    BrandDOUG'S HEADERS
    Package Height10.9
    Package Width20.7
    Package Length25.7
    Weight26.0 PG
    Part CategoryPerformance Parts
    Steering SystemPower
    PositionN/A
    Brake SystemPower
    Part FitmentSemi Universal
    Vendor Part NumberD311
    Package Qty1
    Package TypeEA
    No Questions
    No Reviews

    Items You Need

    Ceramic Coated Header Polish 6 oz

    CAR CHEMISTRY

    Ceramic Coated Header Polish 6 oz

    Part Number : 176-CGHP6
    $1599
    Spark Plug Wire Boot Guards, Silver [Set of 8]

    JEGS

    Spark Plug Wire Boot Guards, Silver [Set of 8]

    Part Number : 555-40310
    $4499$49.99
    You Save$5.00
    Spark Plug Wire Boot Guards, Blue [Set of 8]

    JEGS

    Spark Plug Wire Boot Guards, Blue [Set of 8]

    Part Number : 555-40304
    $5499$60.99
    You Save$6.00
    Spark Plug Wire Boot Guards, Red [Set of 8]

    JEGS

    Spark Plug Wire Boot Guards, Red [Set of 8]

    Part Number : 555-40302
    $5499$60.99
    You Save$6.00
    Exhaust & Header Wrap 1 in. x 50 ft. x 1/16 in. Thick

    JEGS

    Exhaust & Header Wrap 1 in. x 50 ft. x 1/16 in. Thick

    Part Number : 555-32062
    $2799$30.79
    You Save$2.80
    Exhaust & Header Wrap 2 in. x 50 ft. x 1/16 in. Thick

    JEGS

    Exhaust & Header Wrap 2 in. x 50 ft. x 1/16 in. Thick

    Part Number : 555-32057
    $4899$53.99
    You Save$5.00
    Spark Plug Wire Boot Guards, Black [Set of 8]

    JEGS

    Spark Plug Wire Boot Guards, Black [Set of 8]

    Part Number : 555-40300
    $4499$49.99
    You Save$5.00
    Some parts are not legal for use in California or other states with similar laws / regulations
    p65 warning
    Your Cart

    Your shopping cart is empty!