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Patriot Exhaust H8033-1

Patriot Exhaust 265-400 Small Block Header 1-5/8" Primary Tubes


Free Shipping Estimated to ship directly from the manufacturer on 11/01/18

Patriot Exhaust 265-400 Small Block Header 1-5/8" Primary Tubes $466.99
265-400 Small Block Header
  • 1-5/8'' Primary Tubes
  • 2-1/2'' Collector
  • Round Port Shape
  • Metallic Ceramic Coated
  • Patriot Exhaust H8033-1 Details



    • 1935-1948 Fat Fendered Street Rods (Most Chassis)
    • Fenderwell exit.
    • Outside frame exit.
    • Universal application for most street rod applications.
    • Can be used with any oil filter system or transmission and starter combination.
    • Will fit most angle plug heads.
    • Check motor mount position before ordering.
    • Will work on automatic and manual transmissions.

    Note: This product is Legal for use on 1974 and older non catalyst equipped vehicles and is considered a “replacement part” per California Air Resources Board regulations, as long as ALL emissions sensitive components are retained, including A.I.R., EGR, Heat Risers etc. Failure to retain any of these components, or use on any 1975 or newer catalytic converter equipped car would render this product Illegal for Street or Off Highway Use in California, or in states that have adopted California Emissions regulations and may only be used for Closed Course Competition.


    Gaskets Included
    Header Finish
    Silver ceramic coated
    Header Material
    Header Style
    Motor Mounts Included
    Bolts/Studs Included
    Catalytic Converter(s) Included
    Cross Over Pipe Included
    Reducers Included
    Transmission Mount Included
    Primary Tube Diameter (in.)
    1 5/8
    Sold as a pair
    Primary Tube Gauge
    Flange Style
    Collector Attachment
    3-bolt flange
    Collector Diameter (in.)
    Cylinder Head Port Shape
    Manufacturer's Part Number:
    Shipping Weight:
    Package Height:
    Package Depth:
    Package Width:

    Full length and fenderwell headers provide the ultimate performance for street rodders with high performance engines. These header styles have longer primary tubes, which help produce more horsepower and torque than Tight Tucks.

    Chassis headers fit inside the frame rails, but if there is not enough room, our "up and over" fenderwell headers will provide the same great performance with an awesome look.

    See More Details for Applications Listing.

    Dimensions (Inches)
    Part Number A-Left A-Right B-Left B-Right C-Left C-Right
    737-H8012 2'' 2'' 16'' 14'' 23'' 27''
    737-H8017 3-1/2'' 3-1/2'' 16-3/4'' 16-3/4'' 19'' 19''
    737-H8018 3-1/2'' 3-1/2'' 17-1/2'' 17-1/2'' 23-1/4'' 23-1/4''
    737-H8021 4-1/8'' 4-1/4'' 15'' 11'' 23'' 25''
    737-H8033 7-1/2'' 7-1/2'' 14-1/2'' 14-1/2'' 27'' 27''
    737-H8035 10'' 10'' 17'' 17'' 29'' 26-1/2''
    737-H8036 7'' 3-5/8'' 8-1/2'' 8-1/2'' 21'' 22''
    737-H8429 3'' 3-1/4'' 18'' 18-1/2'' 19'' 19-1/2''
    737-H8430 3-1/4'' 4'' 10-1/2'' 6-3/4'' 19'' 18-3/4''

    Items You Need

    Some parts are not legal for use in California or other states with similar laws / regulations

    Motor Vehicles

    WARNING: Motor vehicles contain fuel, oils and fluids, battery posts, terminals and related accessories which contain lead and lead compounds and other chemicals known to the State of California to cause cancer, birth defects and other reproductive harm. These chemicals are found in vehicles, vehicle parts and accessories, both new and as replacements. When being serviced, these vehicles generate used oil, waste fluids, grease, fumes and particulates, all known to the State of California to cause cancer, birth defects, and reproductive harm.


    WARNING: Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Some examples of these chemicals are: lead from lead-based paints, crystalline silica from bricks and cement and other masonry products, and arsenic and chromium from chemically treated lumber. Your risk from exposure to these chemicals varies, depending on how often you do this type of work. To reduce your exposure, work in a well-ventilated area and with approved safety equipment, such as dust masks that are specially designed to filter out microscopic particles.

    Electrical Cords

    WARNING: The wires of these products contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling.