For Sale: High-Performance 18-Degree SBC Nitrous Intake Manifold

Key Features:

Elevate your Small Block Chevy (SBC) nitrous motor with this meticulously prepared 18-degree intake manifold, engineered for extreme performance and reliability. This setup is ready to bolt on and unleash significant horsepower, featuring a comprehensive dual-stage nitrous system and all necessary plumbing and accessories.

• 18-Degree SBC Intake Manifold: This manifold is specifically designed for Small Block Chevy engines utilizing 18-degree cylinder heads, ensuring optimal port alignment and airflow characteristics. Examples of compatible manifolds include the Edelbrock 2922 SBC 18 Degree Victor Series Spider Manifold and the Edelbrock Glidden Victor Spider Intake Manifold for Brodix 18 Degree Heads [2].
• Port Work Completed: The intake manifold has undergone professional port work, optimizing the internal passages for maximum flow and efficiency, crucial for high-horsepower nitrous applications [1].
• Dual-Stage Nitrous System:
  • Stage 1: Nitrous Express (NX) Single Stage Fogger Kit: This system is fully plumbed and ready to operate, providing a potent initial shot of nitrous. NX is renowned for its innovative designs and high-quality components, including their Vortech nozzle design [5].
  • Stage 2: NOS Single Stage Stinger Plate with Carb Spacer: A Nitrous Oxide Systems (NOS) Stinger plate is included, designed to sandwich between the carburetor and the manifold, offering an additional stage of nitrous. NOS is a long-standing and prestigious name in nitrous technology, known for superior quality and performance [5]. The inclusion of a carb spacer helps optimize air/fuel distribution and can provide additional plenum volume [6] [7].
• Nitrous Express Lightning Solenoids (4x 15300L): The system is equipped with four high-performance Nitrous Express Lightning solenoids, ensuring precise and rapid delivery of nitrous and fuel. These solenoids are critical for consistent and powerful nitrous activation.
• Comprehensive Plumbing and Accessories:
  • PSI Gauges: Included for monitoring nitrous pressure, essential for safe and effective operation [8].
  • MagnaFuel Fuel Log: Provides a reliable and high-flow fuel supply to the nitrous system.
  • Three Regulators: For precise control over fuel and nitrous pressures.
  • Y-Fittings: Facilitate efficient distribution of nitrous and fuel lines.
  • Nozzles: Specific nozzles for both fogger and plate systems are included, ensuring proper atomization and distribution [5] [6].
  • Braided Lines: Durable, high-pressure braided lines are used throughout the system for safety and performance.
  • Carb Spacer: As mentioned, this aids in optimizing performance and can help with nitrous distribution, especially in dual-plane manifolds [7].
• Bunged for Second Stage Fogger: The manifold is pre-drilled and bunged, making it ready for the addition of a second fogger stage, offering future upgrade potential for even higher horsepower goals [1]. This indicates a custom build, as TRE offers custom sheet metal manifolds with options for multiple stages of nitrous [1].

This setup is ideal for serious drag racers or high-performance street applications looking to maximize power output from their SBC nitrous engine with a reliable and well-integrated system.

Note on Dual Plane Manifolds and Nitrous: While this specific manifold is an 18-degree design, often associated with single-plane configurations for high-RPM power, the concept of running significant nitrous on dual-plane manifolds is well-established. Studies have shown that with proper tuning, including the use of spacers or modifying the center divider, dual-plane manifolds can handle 175-250 HP shots without significant distribution issues [7]. This highlights the versatility and adaptability of nitrous systems when properly integrated with the intake manifold design.

Pricing Context: Custom sheet metal manifolds from manufacturers like TRE can start at $2,400, with various add-ons increasing the price [1]. EFI conversions alone can cost around $950 [4]. Complete direct port nitrous systems can range from approximately $1,289.56 to over $1,500, depending on the manufacturer and features [5] [9]. The components included in this offering represent a significant investment in performance parts and custom fabrication.

This manifold is a turn-key solution for those seeking to add substantial, controlled power to their SBC nitrous build.

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