Exhaust Header for Chevrolet Chevy Universal Small Block 265-400 1 5/8" H8037

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FlasharkSKU: FLES08363
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Flashark Exhaust Header for Chevrolet Chevy Small Block 265-400 1 5/8" H8037


  • Universal application for most street rods
  • Can be used with any oil filter system or transmission and starter combination
  • Will not fit 1955-1957 Chevy, Camaro, or other modern vehicles with a cross member below the engine's center two exhaust ports

  • Specifications:

    Brand Name: FLASHARK
    Certificate: ISO9001:2000
    Application: Automobile Exhaust Header
    Material: Stainless Steel
    Surface: Mirror Polish
    Tube Size: 1 5/8" 1.625 in (41.3 mm)
    Collector Size: 2.5"
    Collector Attachment: 3-bolt flange
    Primary Tube Gauge: 16-gauge


    • Tight Tucks fit in the tightest of engine compartments and clear most stock motor mounts.
    • Durable 16-gauge tubing
    • Comes complete with gaskets, header bolts and collector reducers. (excluding part # H8019 & H8090).
    • Most Tight Tuck headers are available in three finishes; stainless steel for individual customizing, Hi-Temp Black Coated or with Patriot's very popular metallic ceramic coating.
    • Show quality chrome finish is also available on selected applications.

    Exhaust Header VS Manifold, which is the better choice?

    The structural differences between exhaust headers and manifolds are the material and size. From the material, exhaust headers are made of lighter, thinner steel, while exhaust manifolds are made of thick iron. Exhaust headers are also longer than exhaust manifolds. When in use, exhaust manifolds create back pressure, which lowers performance. Because each cylinder of the engine is given its own tube, however, headers eliminate this problem; thus, allowing the gases to exit without the creation of back pressure. Therefore, exhaust headers are a BETTER choice than an exhaust manifold.

    Replacing or upgrading your exhaust header is necessary for both engine performance and sound. Whether on or off the track, exhaust headers provide more horsepower and improved exhaust sound. FLASHARK offers many products to help you create your own custom engine headers. It's really easy and convenient to use: direct bolt-on, no modification needed. 

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