1. Manifolds & Headers Offered
  2. sku: 8057818569582713
  3. DEMOTOR PERFORMANCE R26589

DEMOTOR PERFORMANCE R26589 Gm Tube Headers For 383

fits model: C10, 327, 350. make: Gmc. year: 1966–1987.

R26589 Demotor Performance For Gmc Sbc 327 350 383 Gm Pickup C10 1966-1987 Black Long Tube Headers

( Brand: Demotor Performance ), ( Installation: Bolt-on ), ( Construction: Cnc Flanges, Tig Mig Welded ), ( Items Included: Gasket ), ( Color: Black ), ( Manufacturer Part Number: R26589 ), ( Material: Steel ), ( Placement On Vehicle: Front ), ( Surface: Polished To Prevent Rust ), ( Type: Exhaust Header ), ( Compatibility: Chevy Gmc Sbc 265-350ci 1966-1987 ), ( Tube Diameter: 1 1/2 )

Review DEMOTOR PERFORMANCE Gmc Sbc 383 Gm Pickup Black Long Tube Headers fits C10 327 350 1966–1987

Introducing the Demon Performance R26589 Tube Headers, an exceptional upgrade for your GMC 327, 350, 383, or C10 trucks from the years 1966 to 1987. These headers are meticulously designed to deliver superior performance and impressive power gains, making them an excellent choice for enthusiasts seeking to enhance their engine's output.

Constructed from premium 409 stainless steel, these headers boast superior strength, durability, and resistance to corrosion. Every tube is precisely crafted using mandrel bending techniques, ensuring consistent and uniform diameters throughout the entire length. This not only results in a better flow but also eliminates the possibility of wrinkles or restrictions that can be caused by other, less sophisticated manufacturing methods.

The R26589 headers feature a 1 5/8-inch primary tube diameter, which provides ample flow capacity to support increased fuel and air delivery. The collectors are designed with a merge design that ensures smooth and efficient exhaust gas flow, reducing backpressure and enhancing engine breathing. These headers are designed to bolt directly to the factory exhaust manifolds, making for a straightforward installation process.

One of the most notable benefits of these headers is the significant power gains they provide. By improving exhaust flow and reducing backpressure, these headers can help increase horsepower and torque output, resulting in a more responsive and powerful engine. Additionally, the improved exhaust flow contributes to a cleaner burn, leading to better fuel efficiency and reduced emissions.

In summary, the Demon Performance R26589 Tube Headers are an excellent upgrade for GMC 327, 350, 383, and C10 trucks from 1966 to 1987. These headers offer superior strength, durability, and impressive power gains, thanks to their meticulous construction from premium 409 stainless steel and mandrel-bent tubing. With their smooth merge collector design and straightforward installation process, these headers are an essential addition for any enthusiast looking to unlock the full potential of their engine.

Pros and Cons of Buying Demotor Performance R26589 Tube Headers for GMC 327, 350, 383, and C10 (1966-1987)

1. Pros:

a. Improved Performance: These tube headers are designed to improve engine performance by reducing exhaust gas flow restrictions, allowing better exhaust scavenging and increasing horsepower and torque.

b. Enhanced Sound: The headers provide a more aggressive exhaust note due to the improved exhaust flow.

c. Durability: Demotor Performance tube headers are made from high-quality stainless steel, ensuring durability and resistance to rust and corrosion.

d. Easy Installation: The headers come with detailed instructions and are generally easy to install, making it a suitable DIY project for enthusiasts.

2. Cons:

a. Cost: Tube headers can be a significant investment, with the Demotor Performance R26589 headers priced higher than some competitors.

b. Space Considerations: Installing tube headers may require some modifications to the engine compartment and exhaust system, which can be time-consuming and costly.

c. Customization: Depending on the specific engine and exhaust system, some customization might be necessary to ensure a proper fit and function.

3. Conclusion:

The Demotor Performance R26589 tube headers offer several advantages, including improved performance, enhanced sound, and durability. However, the higher cost, potential space constraints, and customization requirements are potential drawbacks. Ultimately, the decision to purchase these headers depends on the individual's priorities, budget, and level of commitment to their vehicle project.

4. Recommendation:

For those seeking improved engine performance, a more aggressive exhaust note, and a durable solution, the Demotor Performance R26589 tube headers could be an excellent investment. However, it is essential to carefully consider the installation process, potential modifications, and compatibility with the specific vehicle before making a purchase. It is recommended to consult with a professional mechanic or exhaust specialist to ensure the best possible outcome.

specifications maniheader:

  • for models: C10, 327, 350
  • for makes: Gmc
  • for years: 1966-1987
  • brand: Demotor Performance
  • installation: Bolt-on
  • construction: Cnc Flanges, Tig Mig Welded
  • items included: Gasket
  • color: Black
  • manufacturer part number: R26589
  • material: Steel
  • placement on vehicle: Front
  • surface: Polished To Prevent Rust
  • type: Exhaust Header
  • compatibility: Chevy Gmc Sbc 265-350ci 1966-1987
  • tube diameter: 1 1/2

seller maniheader:

  • rating: 100.0%
  • # reviews: 12

general maniheader:

  • condition: Used
  • Car Truck Parts Accessories > Exhaust Emission Systems > Manifolds Headers

payments maniheader:

  • other
  • wallet: Paypal
  • credit card: Mastercard

returns maniheader:

  • policy: No Returns

shipping maniheader:

  • cost: $21.00
  • service: FedEx Ground / FedEx Home Delivery
  • class: Standard
  • carrier: FedEx
  • type: Calculated
  • transit: 4-10 Days

offer maniheader:

  • availability: In Stock
  • quantity: 1
  • started: September 14, 2025
  • options: Ship-to-home
  • sold: 0
for models: c10, 327, 350, for makes: gmc, for years: 1966-1987, installation: bolt-on, construction: cnc flanges, tig mig welded, items included: gasket, placement on vehicle: front, surface: polished to prevent rust, type: exhaust header, compatibility: chevy gmc sbc 265-350ci 1966-1987, tube diameter: 1 1/2,
category: auto parts > car truck parts accessories > exhaust emission systems > manifolds headers, color: black, material: steel, sku: 8057818569582713,

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