Exhaust Header for Chevy Small Block SB V8 262 265 283 305 327 350 400

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FlasharkSKU: FLES08256
3 reviews

Color: silver
Sale price$126.00 Regular price$204.00

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Exhaust Header for Chevy Small Block SB V8 262 265 283 305 327 350 400


  • For 1967-1987 Chevrolet Pontiac Buick and Oldsmobile engines(Chevy 265-400 Small Block GEN I V8)
  • Except the 1967 Chevrolet Camaro
  • For Year and Model, Please Check the Compatibility


Brand Name: FLASHARK
Certificate: ISO9001:2000
Application: Automobile Exhaust Header
Material: Stainless Steel
Surface: Mirror Polish
Primary Tube Size: 1 5/8"
Outlet Flange Thickness: 3/8"
Standard SBC 3-Bolt Flange Inlet / Outlet: 2.875 in


2 X 4-1 High Performance Racing Spec. Design
Hugs the block for a closer fit and extra clearance
CNC machine flanges with TIG and MIG welded construction
Maximizing Smoothest High Exhaust Air Flow Rate
Computerized Mandrel-Bended to Maximize Air Flow Smoothness
Increase Engine Exhaust Output and Efficiency
Increase High Flow Air, Instantly Gain 10 -15 Hp. / Tq.

Package including:

  • 1 x Set of Stainless Steel Headers
  • 1 x Set of Mounting Accessories
  • Just as the pictures show

What are exhaust manifolds for?

Boost Horsepower and torque, and Save on Gas with Headers and Exhaust System Modifications!"

Replacing a vehicle’s headers and exhaust is a way to add horsepower and torque, and it will also increase your vehicle’s volume. Want a car that sounds like an American muscle car should? This header will help your vehicle achieve that and it can add up to 10-15 horsepower.

Install an exhaust system means about a 0.5 mpg gas mileage improvement. While that might not sound like much, consider this: If gas costs $3 a gallon, and you drive this truck 15,000 miles a year, you’re saving yourself about $85 a year on gas. In five years, you’ll have saved nearly enough money to pay for a complete cat-back exhaust system

Actual Product Images

Sharing from @clunkersandclassics

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.


In addition to purchasing this product, Flashark highly recommends that you purchase Flashark and Spelab's new collaborative product, the silicone coolant hose kit; to replace the stock rubber coolant hose in your car's cooling system.

Are silicone coolant hoses better? Coolant hoses transport the coolant—a mixture of water and antifreeze—from the engine to the radiator and back. The coolant absorbs heat from the engine block and heads and then releases this heat through the radiator, where airflow dissipates it away from the vehicle. This continuous flow is crucial for preventing engine overheating, which can lead to severe damage or failure.

Customer Reviews

Based on 3 reviews
Emily N. (Phoenix, US)
305 swapped 1980 el camino

Worked real great no issue on fitment whats so over

Thank you for your comment and I look forward to receiving your feedback pictures!

Marquiz P. (Nashville, US)

1964-1997 Chevy 265-400 Small Block SBC Gen I V8 8-2-1 Ceramic Monte/ Malibu/ Camaro /Caprice 265 283 305 307 327 350 400 Exhaust Header

Gerald B. (Oklahoma City, US)

Good fit and finish

Hi, thanks for your comment! Looking forward to receiving your feedback pictures!

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