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Hedman Standard Duty Uncoated Headers for 1955-57 Chevy Passenger 283-400

Hedman 65004

500-65004

made in usa
jegs shipping
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Hedman Standard Duty Uncoated Headers for 1955-57 Chevy Passenger 283-400 $279.99
Standard-Duty Uncoated Headers
  • 1955-57 Chevy Passenger 283-400
  • Tube Diameter: 1-3/4"
  • Collector Size: 3"

  • Hedman 65004 Details

    GM Cars

  • Without smog injection or injection heads.
  • Modification to stock exhaust required to retain catalytic converter.
  • 4bbl Heads only.
  • Will fit heads with original angle plug location.
  • Made in and shipped from California.

  • Specifications:

    Application
    Automotive
    Tube Direction
    Down Swept
    Gaskets Included
    Yes
    Header Finish
    Natural
    Header Material
    Steel
    Header Style
    Full-length
    Motor Mounts Included
    No
    Tuned
    Yes
    Bolts/Studs Included
    Yes
    Catalytic Converter(s) Included
    No
    Cross Over Pipe Included
    No
    Reducers Included
    No
    Transmission Mount Included
    No
    Weld-Up
    No
    Primary Tube Diameter (in.)
    1 3/4
    Quantity
    Sold as a pair
    Primary Tube Gauge
    18-gauge
    Flange Style
    Standard
    Collector Attachment
    Ball and socket flange
    Collector Diameter (in.)
    3
    Cylinder Head Port Shape
    Oval
    Manufacturer's Part Number:
    65004
    Shipping Weight:
    43.29
    Package Height:
    47
    Package Depth:
    10.5
    Package Width:
    21

    With Hedman's guaranteed fit and lifetime warranty, how can you go wrong with these headers? Most are fabricated from 18-gauge steel with mandrel bent primary tubes and 1/4" flanges; some utilize thicker 14-gauge or 16-gauge tubing with 3/8" flanges. The black paint Hedman applies to uncoated headers is not high-temperature; it is pre-installation protection only. For the ultimate protection from the elements, click the following link to view Hedman's own HTC Hi-Tech Coated Headers.

    JEGS Easy Kits are designed by JEGS Professionals to help you get all the performance parts you need.

    Does Hedman 65004 fit your vehicle?

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    CC

    1957 CHEVROLET BEL AIR

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Will Fit With Angle Plug Heads/Chevy Aluminum Only~Without Smog Injection Or Injection Heads~Universal Oval Port Design~Will Fit 605 Steering Box
    • Liter: 4.6
    • SubModel: NOMAD
    • CUI: 283
    • EngineType: V8 ( 4.6 L / 283 )

    1957 CHEVROLET ONE-FIFTY SERIES

    • CC: 4638
    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Will Fit With Angle Plug Heads/Chevy Aluminum Only~Without Smog Injection Or Injection Heads~Universal Oval Port Design~Will Fit 605 Steering Box
    • Liter: 4.6
    • SubModel: BASE
    • CUI: 283
    • EngineType: V8 ( 4.6 L / 283 )

    1957 CHEVROLET TWO-TEN SERIES

    • CC: 4638
    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Will Fit With Angle Plug Heads/Chevy Aluminum Only~Without Smog Injection Or Injection Heads~Universal Oval Port Design~Will Fit 605 Steering Box
    • Liter: 4.6
    • SubModel: BASE
    • CUI: 283
    • EngineType: V8 ( 4.6 L / 283 )

    1957 CHEVROLET BEL AIR

    • CC: 4638
    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Will Fit With Angle Plug Heads/Chevy Aluminum Only~Without Smog Injection Or Injection Heads~Universal Oval Port Design~Will Fit 605 Steering Box
    • Liter: 4.6
    • SubModel: BASE
    • CUI: 283
    • EngineType: V8 ( 4.6 L / 283 )

    1957 CHEVROLET TWO-TEN SERIES

    • CC: 4638
    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Will Fit With Angle Plug Heads/Chevy Aluminum Only~Without Smog Injection Or Injection Heads~Universal Oval Port Design~Will Fit 605 Steering Box
    • Liter: 4.6
    • SubModel: DEL RAY
    • CUI: 283
    • EngineType: V8 ( 4.6 L / 283 )

    Can these headers be installed on a new Blueprint engine while it's being broken in? I don't drive my car very much so 500 miles would be awhile and my mechanic wouldn't be happy.

    Asked by: reggiej
    It may shorten the life of the headers somewhat. The main concern is that you don't want them on there if you are doing the initial break-in of a flat-tappet camshaft, where you spend around 25 minutes varying the rpm in a specific range while the cam and lifters develop their initial wear pattern. That creates a lot of heat in the exhaust and can get the headers red hot. If your crate engine has a hydraulic flat tappet cam break in the cam with manifolds bolted up to it then you can install the headers if you like afterward and not risk so much. If your crate motor has a roller cam then the cam break-in does not apply.
    Answered by: Matt_B
    Date published: 2018-03-18
    • y_2018, m_8, d_16, h_9CST
    • bvseo_bulk, prod_bvqa, vn_bulk_2.0.8
    • cp_1, bvpage1
    • co_hasquestionsanswers, tq_1
    • loc_en_US, sid_10001_10001_36180, prod, sort_[SortEntry(order=LAST_APPROVED_ANSWER_SUBMISSION_TIME, direction=DESCENDING)]
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