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.
Specifications:
Brand Name: FLASHARK
Model: EH28160
Certificate: ISO9001:2000
Application: Automobile Exhaust Header
Material: Stainless Steel
Surface: Mirror Polish
Inlet: 2" x 1.65" (Rectangle) and 1.65" x 1.65" (Square)
Outlet: 2" (Diameter)
1-3/4" and 2" primary tubes
7/16" thick head flanges
Collector Diameter: 2.000"
Flange Thickness: 0.310"
Hardware Included: Yes
Gasket(s) Included: Yes
Notes: 1.75" and 2.00" primary tubes.
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.
Fitment & Compatibility
| Brand | Model | Year Range | Full Compatible Specs |
|---|---|---|---|
| Chevy | Full-Size Passenger Cars & Light Trucks | 1937-1962 | Factory-Equipped 216ci / 235ci / 261ci Inline-6 (Straight 6) Stovebolt Engine; Fits All Factory Standard Trim Levels & Body Configurations |
Q1: Will this exhaust header fit my 1937-1962 Chevy 6-cylinder 216, 235, or 261 engine?
A1: Yes, this Flashark exhaust header is specifically designed for the Chevrolet Inline 6-cylinder engines produced between 1937 and 1962. It provides a perfect fit for the 216, 235, and 261 cubic inch displacements, ensuring a vintage-correct upgrade for your classic Chevy truck or car.
Q2: What are the primary performance gains I can expect from these Chevy 235 headers?
A2: By replacing the restrictive stock cast-iron manifold with our high-flow dual exhaust header, you can expect improved exhaust scavenging and reduced back pressure. Most users report a noticeable increase in mid-range torque and a gain of approximately 10-15 horsepower, making it a top performance upgrade for Chevy 235 inline 6 engines.
Q3: Does this header require a dual exhaust setup?
A3: Yes, this header features a dual-outlet design. This split-manifold configuration is essential for achieving that classic "split-six" sound and maximizing flow. To complete the installation, you will need to run dual exhaust pipes from the header back to the mufflers.
Q4: How does the Flashark header compare to traditional Fenton headers for a 235 Chevy?
A4: Our headers offer a similar "Fenton-style" aesthetic and performance but are manufactured using modern casting and machining techniques. This ensures flatter flanges for a better seal against the cylinder head, reducing the risk of common exhaust leaks found in older vintage headers.
Q5: Is this exhaust header manifold compatible with my stock intake manifold?
A5: This header is designed to be compatible with most stock and aftermarket intake manifolds. However, because the exhaust and intake manifolds share a mounting surface on the Chevy Inline 6, we recommend using high-quality gaskets and checking for clearance if you are using a dual-carburetor aftermarket intake setup.
Q6: What material is used for the Flashark Chevy 216/235/261 headers?
A6: These headers are constructed from heavy-duty cast iron, much like the original performance manifolds of the era. This material is chosen for its excellent heat retention properties and durability, ensuring it won't warp under high temperatures while maintaining a classic look in your engine bay.
Q7: Will I need to modify my steering column or starter for clearance?
A7: This header is engineered to provide maximum clearance for the steering box and starter in most 1937-1962 Chevy chassis. While it is a direct fit for most trucks and passenger cars, we always recommend verifying clearance if your vehicle has been modified with a non-original steering setup or a high-torque mini-starter.
Q8: Does the kit include the necessary gaskets and hardware for installation?
A8: Yes, our Chevy 6-cylinder exhaust header kit comes complete with the mounting gaskets and the necessary hardware to bolt the header to your engine block. This ensures a leak-free seal and a straightforward "bolt-on" installation experience.
Q9: Does this header fit the later Chevy 250 inline 6 engines?
A9: No, this specific model is tailored for the earlier 216, 235, and 261 "Stovebolt" engines (1937-1962). The exhaust port spacing and mounting bolt patterns are different from the later 194, 230, 250, and 292 engines. Please ensure your engine is a 1962 or earlier model before purchasing.
Q10: How does this header change the sound of my Chevy Inline 6?
A10: Installing these dual headers completely transforms the acoustic profile of your engine. It provides the iconic "deep and throaty" rumble associated with classic split-manifold Chevy sixes, especially when paired with glasspack or turbo-style mufflers.
Q11: Can I use this header on a 1937-1962 Chevy car, or is it only for trucks?
A11: It is designed for both! This header fits 1937-1962 Chevrolet passenger cars and pickups. Whether you are restoring a classic Bel Air or upgrading a 3100 series Thriftmaster truck, this header provides the performance and style you need.
Q12: Is any welding required during the installation process?
A12: The header itself is a bolt-on component for the engine. However, since you are moving from a single exhaust to a dual exhaust system, some welding or custom pipe fabrication will be required to connect your new dual exhaust pipes to the header collectors.
Q13: Why should I choose Flashark for my vintage Chevy 235 exhaust manifold needs?
A13: Flashark combines vintage styling with modern precision. Our headers are designed by enthusiasts who understand the nuances of the Stovebolt engine, ensuring you get a part that fits correctly, looks authentic, and delivers genuine performance gains at a competitive price point.