1. Manifolds & Headers Offered
  2. sku: 12888302591974813
  3. SPEED 25-1034

SPEED ENGINEERING 25-1034 Longtube Headers 7/8

fits model: C5, Ls1, Corvette. year: 1997–2004.

25-1034 Speed Engineering Used C5 Corvette 1 7/8 Inch Longtube Headers 1997-2004 Ls1

( Brand: Speed Engineering ), ( Mounting Style: Bolt-on ), ( Items Included: Gasket ), ( Color: Silver ), ( Manufacturer Part Number: 25-1034 ), ( Material: Stainless Steel ), ( Vintage Part: No ), ( Placement On Vehicle: Front ), ( Fuel Type: Gasoline ), ( Type: Exhaust Header ), ( Manufacturer Warranty: 1 Year ), ( Features: Polished ), ( Performance Part: Yes )

Review SPEED ENGINEERING Used 7/8 Inch Longtube Headers fits CORVETTE C5 LS1 1997–2004

Introducing the Engineering 25-1034 C5 Corvette 7/8 Longtube Headers, a must-have performance upgrade for any 1997-2004 LS1 Corvette engine. These headers are meticulously designed and engineered to deliver maximum power and torque gains while maintaining optimal exhaust flow and reducing backpressure.

The Engineering 25-1034 headers are constructed from high-quality 321 stainless steel, ensuring durability and resistance to corrosion. The 7/8-inch primary tubes are precisely sized and shaped to provide an optimal exhaust scavenging effect. The collectors are meticulously crafted to ensure a smooth and efficient exhaust flow, reducing the amount of exhaust gas recirculation (EGR) and improving engine breathing.

These headers feature a long-tube design, which provides a more direct and efficient exhaust path compared to stock headers. This design not only improves engine performance but also enhances the sound of your Corvette's exhaust, adding a thrilling and distinctive note to your driving experience.

The Engineering 25-1034 headers are designed to bolt directly onto your LS1 engine, making installation a breeze. They come with all necessary hardware, including new gaskets and oxygen sensor bungs, to ensure a hassle-free installation process.

Moreover, these headers are CARB-legal, meaning they meet the strict emissions standards set by the California Air Resources Board. This makes them a perfect choice for those who live in California or any other state with similar emissions regulations.

In summary, the Engineering 25-1034 C5 Corvette 7/8 Longtube Headers are an excellent investment for any LS1 Corvette engine. They provide significant power and torque gains, enhance exhaust flow and reduce backpressure, and add a thrilling exhaust note to your driving experience. With their durability, ease of installation, and CARB-legality, these headers offer a high-performance upgrade that is both practical and enjoyable.

Pros and Cons of Installing 25-1034 C5 Corvette 7/8 Longtube Headers for 1997-2004 LS1 Engines

1. Pros:

a. Performance Enhancement: Longtube headers improve engine breathing, resulting in increased power and torque. Better exhaust scavenging leads to enhanced combustion efficiency.

b. Sound Quality: Longtube headers produce a more pleasing exhaust note due to their larger diameter piping and fewer bends, which can enhance the driving experience.

c. Durability: 25-1034 C5 Corvette headers are made of high-quality stainless steel, which offers excellent durability, resistance to corrosion, and longevity.

d. Compatibility: These headers are specifically designed for C5 Corvette engines from 1997-2004, ensuring a precise fit and minimal modification requirements.

2. Cons:

a. Cost: Installing longtube headers can be a costly modification, especially considering the price of high-quality aftermarket headers like the 25-1034 C5 Corvette headers.

b. Installation Complexity: Installing longtube headers requires extensive labor and expertise, as they involve significant engine modifications and custom exhaust fabrication.

c. Exhaust System Upgrade: Installing longtube headers may necessitate an exhaust system upgrade to accommodate the larger diameter piping and ensure optimal performance.

d. Potential for Check Engine Light: Due to the extensive modifications required during installation, there is a risk of triggering the check engine light, which may necessitate additional diagnostic work or adjustments.

Conclusion:

The decision to install 25-1034 C5 Corvette 7/8 longtube headers on a 1997-2004 LS1 engine involves weighing the potential benefits and drawbacks. Performance enhancements, improved sound quality, and increased durability are significant advantages. However, the high cost, complex installation process, and potential need for additional exhaust system upgrades are notable downsides.

Recommendation:

If you're an enthusiast seeking maximum power and a pleasing exhaust note, and you're willing to invest the time and resources required for the installation, the 25-1034 C5 Corvette 7/8 longtube headers could be an excellent choice for your LS1 engine. However, if you're on a tight budget or prefer a less complex modification, you may want to consider other performance upgrades.

specifications maniheader:

  • for models: C5, Ls1, Corvette
  • for years: 1997-2004
  • brand: Speed Engineering
  • mounting style: Bolt-on
  • items included: Gasket
  • color: Silver
  • manufacturer part number: 25-1034
  • material: Stainless Steel
  • vintage part: No
  • placement on vehicle: Front
  • fuel type: Gasoline
  • type: Exhaust Header
  • manufacturer warranty: 1 Year
  • features: Polished
  • performance part: Yes

offer maniheader:

  • quantity: 1
  • availability: In Stock
  • options: Ship-to-home
  • sold: 0
  • started: June 19, 2026
  • best offers: True

seller maniheader:

  • rating: 100.0%
  • # reviews: 1

payments maniheader:

  • wallet: Google-pay
  • other
  • credit card: Diners-club

returns maniheader:

  • policy: No Returns

shipping maniheader:

  • cost: $47.79
  • service: USPS Ground Advantage
  • carrier: USPS
  • class: Standard
  • type: Calculated
  • transit: 6-13 Days

general maniheader:

  • condition: Used
  • Car Truck Parts Accessories > Exhaust Emission Systems > Manifolds Headers
for models: c5, ls1, corvette, for years: 1997-2004, mounting style: bolt-on, items included: gasket, vintage part: no, placement on vehicle: front, fuel type: gasoline, type: exhaust header, manufacturer warranty: 1 year, features: polished, performance part: yes,
category: auto parts > car truck parts accessories > exhaust emission systems > manifolds headers, color: silver, material: stainless steel, sku: 12888302591974813,

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