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Hedman Header Flanges W/o Stubs (Tube Diameter: 1 7/8")

For each

Part#: 10301

  Hedman Header Flanges w/o Stubs (Tube Diameter: 1 7/8


Fits On:

Ford 351-400M (2V)

Flange Thickness: 3/8", Port Shape: Oval
One of the most important aspects of engine performance is efficient exhaust evacuation, but it can also be one of the most irritating when trying to stuff a set of headers between your engine and framerails. Luckily, Hedman Hedders are known for fitting in tight spaces, and they provide the power your vehicle needs and deserves. Technology such as that found in Hedman's Tork-Step Hedders gets spent gasses out of your engine quickly, allowing more fresh air and fuel to enter the combustion chambers. The result is more horsepower and torque, which is a good thing no matter whether it's for your street car, race car, or tow rig. Check out Hedman's quality for yourself.
Q: How do you install a header?
A: A header is a direct bolt-on. Simply remove the factory OEM exhaust manifold and the aftermarket header is put in its place. The header is to be attached the head of your vehicle. Remove all the bolts that hold the flanges in place and detach the factory manifold. The down pipe or exhaust pipe should be removed as well and then reattached once the header flanges are bolted back onto the head.

Q: For which vehicles is it necessary to buy a pair of headers? On your website are headers automatically sold in pairs for these vehicles?
A: When purchasing exhaust headers for a V-6 or V-8 engine, the header package is complete with two headers. If your vehicle is a 4-cylinder, there only a single header that is used.

Q: How much does the material used to make the header matter?
A: There are two main materials that headers are manufactured out of: ceramic and stainless steel. Ceramic headers are less expensive, but are prone to cracking if they get to be extremely hot. Stainless steel headers are more expensive but are more durable and generally more stylish. Stainless steel headers can take any kind of heat you throw at it and not prone to cracking.

Q: What are the different tubing options for headers and what is the difference between them?
A: There are two major designs for headers: the 4-2-1 design and the 4-1 design. In many cases 4-1 headers are designed for racing applications where the vehicle is being driven at or near redline. The 4-1 design maximizes top end power, whereas the 4-2-1 evenly distributes it throughout the power band. Either way, you're going to be getting more horsepower from a header.

Q: What does a header do? Why buy a header?
A: An exhaust header is a performance product that replaces your factory exhaust manifold and improves an engine's performance by allowing air to flow more freely. The easier an engine breathes the more power it produces. Headers generally use piping with a wider diameter than factory tubing, which allows more air to pass through the exhaust system than factory. A header is one of the easiest bolt-on modifications you can make to increase horsepower, making an effective use of money if your goal is to quickly gain horsepower.

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