Chevy Small Block Carbureted Dual Plane Air Gap Aluminum Intake Manifold - Polished

• Fits Gen I Small Block Chevy engines (262–400) including common stroker builds (383 / 406)

• Designed for non-Vortec cylinder heads (Vortec heads require adapter or modification)

• 1987–1995 SBC engines may require adapter due to intake bolt angle differences

• Not compatible with LS, LT, or Big Block Chevy engines

Unlock the full potential of your Small Block Chevy engine with this dual plane air gap intake manifold, engineered for high-performance street and strip applications. Designed to compete with leading high-performance air-gap style intake manifolds, delivering excellent airflow efficiency, cooler intake temperatures.

Why Air Gap Technology Matters
Unlike traditional intake manifolds, the air-gap design creates an open space beneath the plenum, separating intake runners from engine heat. This significantly reduces heat transfer, allowing a cooler, denser air/fuel mixture—a critical factor in increasing horsepower and torque

Performance You Can Feel
The dual-plane layout enhances cylinder distribution, giving you:
• Strong low-end torque for street driving
• Improved throttle response
• High-RPM power up to 6,500 RPM

This makes it ideal for builds running:
• Performance camshafts
• Upgraded carburetors (650–800 CFM recommended range)
• Headers and free-flow exhaust systems

Built for Street & Performance Applications
Whether you're restoring a classic SBC or building a high-performance 350 or 383 stroker, this intake delivers the perfect balance of drivability and power. Compared to standard dual-plane manifolds, air-gap designs provide improved top-end performance while maintaining excellent street manners

Show-Quality Finish
The polished aluminum construction not only improves heat dissipation but also adds a premium look to your engine bay—ideal for show cars and high-end builds.

What engines is this intake manifold compatible with?
This intake manifold is designed for 1955–1986 Chevrolet Small Block V8 engines and can be used on 1987–1995 models with the included adapters.

Will this intake fit a 350 Small Block Chevy?
Yes, this intake is fully compatible with 350 SBC engines, along with other common displacements such as 305, 327, and 400.

Does this intake work with Vortec or LT1 heads?
This intake is not compatible with LT1-style heads and typically does not fit Vortec heads without modifications or a different manifold design.

What type of carburetor does this intake support?
This intake is designed for square bore carburetors and works best with 600–700 CFM vacuum secondary carbs for street use or 700–800 CFM for higher-performance builds.

What RPM range is this intake designed for?
This air gap intake performs best between approximately 1,500 and 6,500 RPM, offering a broader and higher usable power range than standard dual-plane intakes.

What is the benefit of an air gap intake design?
The air gap design creates an open space under the plenum, reducing heat transfer from the engine. This keeps the air/fuel mixture cooler, which helps increase horsepower and torque.

How does this compare to a standard dual-plane intake?
Compared to standard dual-plane intakes, this air gap design offers better top-end performance while still maintaining good throttle response and drivability.

Is this intake better for street or performance builds?
This intake is ideal for performance street builds and aggressive street/strip setups, offering a balance of drivability and higher RPM power.

What type of intake manifold is this?
This is a dual-plane air gap intake manifold, designed to improve airflow efficiency and reduce heat soak compared to traditional dual-plane designs.

Will this intake clear a stock hood?
It features a relatively low-profile design, but due to the air gap construction, hood clearance should be verified depending on your vehicle.

What material is this intake made from?
It is constructed from lightweight aluminum, improving heat dissipation and reducing overall engine weight.

Does this intake support nitrous or additional accessories?
Yes, it includes provisions such as nitrous bosses, dual distributor hold-downs, and multiple water ports for flexible performance setups.

Is this intake a direct bolt-on upgrade?
In most cases, it installs as a direct replacement for compatible SBC engines, though proper tuning and carburetor setup are recommended for best results.

Will I need tuning after installing this intake?
While not always required, tuning is recommended to fully take advantage of the improved airflow and performance potential.

Will this intake help reduce heat soak issues?
Yes, the air gap design specifically reduces heat transfer from the engine, helping keep intake temperatures lower and improving performance consistency.

Is this a good upgrade over a stock or standard intake?
Yes, this intake offers improved airflow, better high-RPM performance, and reduced heat soak compared to stock and standard dual-plane intakes.

Does the polished finish affect performance?
No, the polished finish is purely cosmetic and does not impact performance—it provides a clean, show-quality appearance.

How do I maintain the polished finish?
Regular cleaning and occasional polishing will help maintain its shine and prevent oxidation over time.