Specifications:
Brand Name: FLASHARK
Certificate: ISO9001:2000
Application: Automobile Exhaust Header
Material: Stainless Steel
Surface: Mirror Polish
Model: EH28200
1 5/8" TUBE
3" COLLECTOR
Add up to 8-20 horsepower, 0.5 mpg gas mileage improvement:
Enhance your vehicle's performance and fuel efficiency with FLASHARK exhaust headers and system modifications. By replacing your vehicle’s headers and exhaust, you can increase horsepower and torque, giving your truck the powerful sound and performance it deserves. Expect gains of up to 8-20 horsepower, making your engine roar like a true American muscle vehicle.
Additionally, installing this exhaust system can improve gas mileage by around 0.5 mpg. While it may seem small, over time, this adds up. For instance, if you drive 15,000 miles annually and gas costs $3 per gallon, you’ll save about $85 a year. In just five years, that’s enough savings to nearly cover the cost of a full cat-back exhaust system. The best part? It’s an easy, bolt-on installation with no modifications required—perfect for vehicles like the 2007-2014 Chevy Silverado, GMC Sierra, and more.
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.
Fitment & Compatibility
✅ Verified Fitment
| Brand | Model | Year Range | Full Compatible Specs |
|---|---|---|---|
| Chevrolet | C10 Pickup | 1973-1985 | 2WD ONLY, V8 5.0L/5.7L/7.4L |
| Chevrolet | Blazer | 1973-1985 | V8 5.0L / 5.7L |
| Chevrolet | Suburban | 1973-1985 | V8 5.0L / 5.7L |
Frequently Asked Questions: Flashark Exhaust Header for 1973-1985 Chevy Truck, Blazer & Suburban
Q1: Will this flashark exhaust header fit my 1985 Chevy C10 pickup?
A1: Yes, absolutely. If you are searching for 1985 chevy c10 headers, this kit provides a perfect fit. It is engineered specifically for the 1973-1985 generation, making it the ultimate direct bolt-on choice for your 85 c10 headers upgrade. (Note: C10 Pickup fitment is for 2WD models only).
Q2: My truck is a 1987. Can I use these as 73-87 c10 headers?
A2: Yes! While the official catalog listing highlights 1973-1985, the GM "Square Body" platform shares the exact same chassis and engine bay dimensions through 1987. Many enthusiasts successfully install this kit as 73-87 c10 headers on their 2WD trucks without any issues.
Q3: I see a lot of aftermarket options. Are these any good?
A3: Customers frequently ask, "are these any good?" The answer is a resounding yes. These headers are manufactured from premium, thick-flanged stainless steel with a high-quality mirror polish. They eliminate the severe backpressure caused by heavy, restrictive factory cast-iron manifolds, delivering a massive upgrade in durability, sound, and raw power.
Q4: Are these considered 73-87 c10 big block headers?
A4: Yes. Although often grouped with small block accessories due to shared chassis components, our fitment specifications confirm compatibility with the massive 7.4L (454 cu in) V8. If you need high-flowing 73-87 c10 big block headers to let your big block breathe, this setup with its 3" collectors will handle the exhaust volume perfectly.
Q5: Will these work as 454 vortec headers for an engine swap?
A5: If you are swapping a later-model 7.4L into your classic Square Body chassis, these headers will physically clear the frame and accommodate the 454 block. However, if you are strictly looking for 454 vortec headers, please verify your specific cylinder head exhaust port shape, as some Vortec heads require a different flange seal than traditional Gen I big blocks.
Q6: How much horsepower will I gain with these 1985 c10 headers?
A6: By swapping out the restrictive factory manifolds for this flashark exhaust header, you significantly improve exhaust gas scavenging. You can expect an instant gain of 8 to 20 horsepower, along with a highly noticeable increase in low-end torque.
Q7: Do these 1985 chevy c10 headers fit 4x4 models?
A7: For the Chevy C10 Pickup, these headers are exclusively designed for 2WD (Two-Wheel Drive) configurations. The routing will interfere with the front driveshaft components on 4WD pickup models.
Q8: Will upgrading my 85 c10 headers improve my gas mileage?
A8: Yes. The 1-5/8" primary tubes and 3" collectors allow your engine to operate more efficiently. Many drivers report a fuel economy improvement of around 0.5 mpg, which translates to real savings at the pump over the life of the vehicle.
Q9: Can I install this flashark exhaust header on a Chevy Blazer or Suburban?
A9: Yes! In addition to C10 trucks, this header kit offers verified direct fitment for both the Chevrolet Blazer and Chevrolet Suburban from 1973 to 1985 equipped with compatible V8 engines.
Q10: Why should I choose the variant with the "Adjustable Alternator Bracket"?
A10: When installing aftermarket 1985 c10 headers, the factory exhaust manifold mounting point for the alternator is often lost. Upgrading to the Header + Bracket variant (specifically designed for 307/350 engines) provides a clean, secure mounting solution, making your installation completely hassle-free.
Q11: Does the installation require any custom fabrication or welding?
A11: No. The headers themselves are designed as a direct bolt-on replacement for your factory exhaust manifolds. While you will need to connect the 3" collectors to your existing mid-pipe or cat-back system, no fabrication is required on the headers.
Q12: What materials are used to construct these headers?
A12: They are constructed from high-quality, lightweight stainless steel to resist corrosion and handle extreme exhaust temperatures. The kit is also ISO9001:2000 certified, ensuring top-tier manufacturing standards for your classic Chevy.