Specifications:
Brand Name: FLASHARK
Certificate: ISO9001:2000
Application: Automobile Exhaust Header
Material: Stainless Steel
Surface: Mirror Polish
Model: EH28273
Inlet / Outlet: 1.76" / 2.89"
V-band Clamp size:3.0"
(Allowable Error range:0.1-0.2inch)
Header Type: Turbo
Primary Diameter: 1-7/8 in. (48mm)
Collector Diameter: 3 in. (76mm)
Head Flange Thickness：3/8 in. (9.5mm)
Pipe Thickness: 16 gauge (1.5mm)
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
⚠️ CRITICAL FITMENT RULE (MUST READ BEFORE PURCHASE)
✅ Verified Fitment
| Brand | Model | Year Range | Full Compatible Specs |
|---|---|---|---|
| Pontiac | Firebird | 1998-2002 | LS-based small block V8 applications; 5.7L/6.0L/6.2L V8; designed for LS1/LS2/LS3/LS6/LSX; can be used for single/twin turbo builds; up and forward facing |
| Pontiac | GTO | 2004-2006 | LS-based small block V8 applications; 5.7L/6.0L/6.2L V8; designed for LS1/LS2/LS3/LS6/LSX; can be used for single/twin turbo builds; up and forward facing |
Q1: Will this FLASHARK exhaust header fit my 1998-2002 Pontiac Firebird or 2004-2006 Pontiac GTO?
A1: Yes, this performance exhaust header is custom-engineered to fit the 1998-2002 Pontiac Firebird and the 2004-2006 Pontiac GTO platforms seamlessly when equipped with a compatible LS-based small block V8 powertrain.
Q2: Why is this product described as a chevy small block chevrolet v8 exhaust header?
A2: While engineered for Pontiac platforms like the Firebird and GTO, these vehicles utilize General Motors' legendary LS engine family (such as the LS1 and LS2). In the automotive industry, the LS family is classified as the modern GM/Chevy small block Chevrolet V8 exhaust header architecture, ensuring a precise port match to those specific cylinder blocks.
Q3: What specific engine codes and displacements are compatible with these FLASHARK headers?
A3: This versatile header kit is fully compatible with LS-based small block V8 engines, specifically covering 5.7L (LS1, LS6), 6.0L (LS2), and 6.2L (LS3) displacements, as well as aftermarket LSX performance blocks.
Q4: What makes the "up and forward" design of these headers unique?
A4: Unlike traditional long-tube or shorty headers that route exhaust gases downward toward the transmission tunnel, these headers feature an aggressive up-and-forward facing orientation. This unique configuration directs the exhaust ports up and toward the front grille, making them the ultimate foundation for custom front-mount turbocharger systems.
Q5: Can I use these headers for both single and twin-turbo builds?
A5: Absolutely. The symmetrical forward-facing layout provides fabricators with extreme flexibility. They are ideally suited for building a merged crossover pipe for a large single-turbo setup or routing independent hotsides for a high-horsepower twin-turbo build.
Q6: Do these flashark headers require any accessory modifications or relocations during installation?
A6: Yes. Because these flashark headers route exhaust piping upward and forward in the engine bay, they are intended for custom turbo builds. Depending on your specific Firebird or GTO engine bay clearance, you may need to relocate factory accessories like the alternator, coil packs, dipstick tube, or air conditioning lines to clear your custom hot-side plumbing.
Q7: What material is used to construct this small block V8 turbo header?
A7: Forced induction setups create massive thermal stress. To handle extreme exhaust gas temperatures (EGTs), these headers are manufactured from heavy-duty, premium-grade stainless steel. They feature thick, warp-resistant flanges and durable TIG/MIG welded primary tubes to prevent cracks and exhaust leaks under high boost.
Q8: What buying options or bundle configurations are available on this product page?
A8: FLASHARK offers two variants to match your project needs. You can choose the standalone Exhaust Header kit (SKU: FLES08257) or upgrade to the premium bundle which includes the Exhaust Header paired with a heavy-duty Head Stud Kit to guarantee maximum clamping force at the cylinder head.
Q9: What installation hardware comes included in the standard standalone header kit?
A9: The standard header kit comes complete with premium-quality multi-layer exhaust gaskets engineered to withstand extreme heat cycles and all necessary high-tensile mounting hardware required to secure the header flanges safely to your engine block.
Q10: Will these headers bolt onto aftermarket cylinder heads?
A10: These headers feature precision CNC-machined flanges designed around standard factory LS-series round/oval exhaust ports. If your small block V8 utilizes aftermarket high-performance heads with non-standard rectangular or prominent D-port configurations, we recommend checking flange geometry compatibility before purchase.
Q11: How do these performance headers improve turbo spool-up times compared to stock manifolds?
A11: Factory cast-iron exhaust manifolds are thick, restrictive, and disrupt exhaust pulsing. FLASHARK performance headers utilize smooth, mandrel-bent stainless steel piping that maximizes exhaust gas velocity and scavenging efficiency, resulting in drastically reduced turbo lag and quicker turbocharger spool-up.
Q12: What type of warranty protection does FLASHARK offer on this header kit?
A12: We stand behind our engineering and craftsmanship. This 1998-2006 Pontiac Firebird / GTO small block V8 exhaust header comes backed by an industry-leading Permanent Warranty, ensuring your forced-induction build is protected for the long haul.
Q13: How much is shipping, and how long will it take for my headers to arrive?
A13: FLASHARK provides 100% Free Shipping on this product. Once your order is processed, your package has an estimated delivery window of just 3 to 5 working days, allowing you to get your upgrade project underway quickly without paying hidden freight fees.