Chevy Small Block Vortec Dual Plane Aluminum Intake Manifold for 305 & 350 V8 Engines - Black

• Vortec 8-Bolt Pattern: Designed exclusively for 1996+ Vortec heads — not for standard SBC intakes

• Carburetor Conversion Ready: Ideal for converting 305 & 350 Vortec engines from EFI to carburetor

• 1,500–6,700 RPM Dual-Plane Design: Delivers strong street torque for trucks, SUVs, and cruisers

• Includes Square-Bore Adapter: Supports square-bore carburetor fitment right out of the box

Upgrade or convert your Small Block Chevy Vortec engine with the Top Street Performance Black Dual Plane Aluminum Intake Manifold, engineered specifically for 1996–2002 Chevrolet 305 and 350 Vortec V8 engines equipped with factory Vortec cylinder heads. Whether you're performing a carburetor conversion on a fuel-injected Vortec engine, replacing a damaged factory intake, or building a street-performance Vortec combination from the ground up, this manifold delivers the Vortec-specific fitment, dual-plane street performance, and carburetor compatibility your build requires.

The Vortec-specific 8-bolt intake pattern ensures proper sealing and fitment with factory Vortec cast iron cylinder heads and Vortec-pattern aluminum heads — and will not fit standard 12-bolt small block Chevy intake patterns. This is a critical distinction: standard SBC intakes will not seal correctly on Vortec heads, making this Vortec-specific manifold the correct solution for any carbureted 305 or 350 Vortec application. A square-bore carburetor adapter is included, expanding carburetor compatibility right out of the box.

Designed to operate across a 1,500–6,700 RPM range, the dual-plane runner layout delivers strong low- and mid-range torque and responsive throttle feel across the powerband where street-driven trucks, SUVs, and performance vehicles spend most of their time. Whether you're running a Chevrolet C/K truck, Tahoe, Suburban, GMC Sierra, or Yukon with a 305 or 350 Vortec, this manifold provides the airflow, drivability, and carburetor compatibility needed for reliable everyday street performance.

Constructed from lightweight aluminum, this Vortec intake manifold reduces engine weight while dissipating heat more efficiently than heavier cast-iron alternatives. The black finish delivers a clean, performance-oriented appearance that complements engine bays in trucks, SUVs, muscle cars, street rods, and restoration builds running Vortec V8 power.

Vortec-Specific Dual-Plane Intake Technology
The dual-plane runner configuration divides the intake plenum into two separate planes, each feeding alternating cylinders to maintain strong airflow velocity from idle through 6,700 RPM. This layout promotes balanced air-fuel distribution across all eight cylinders of the Vortec V8, supporting the consistent low- and mid-range torque delivery that makes this manifold ideal for street-driven trucks, SUVs, and performance builds. The Vortec-specific 8-bolt intake bolt pattern ensures a proper seal with 1996+ Vortec cylinder heads — a design requirement that standard small block Chevy intakes cannot meet. At 4.730 inches tall with an oval intake port shape matched to Vortec head geometry, this manifold optimizes airflow through the intake tract for responsive throttle feel and dependable street drivability across the full operating range.

Performance Benefits
Engineered for the 5.0L L30 305 Vortec and 5.7L L31 350 Vortec V8, this dual-plane intake manifold supports improved airflow and stronger street torque compared to the factory fuel injection intake configuration. The 1,500–6,700 RPM operating range covers the complete spectrum of street driving demands, making this manifold an excellent performer for daily drivers, weekend trucks, SUV builds, and mild street performance applications. It is particularly well-suited for carburetor conversion builds where a Vortec engine is being converted from factory fuel injection to a carbureted setup — one of the most common Vortec performance modifications performed today.

Will this intake manifold fit a 350 Vortec engine?
Yes. This manifold is designed for the 5.7L L31 350 Vortec V8 equipped with factory-style Vortec cylinder heads using the 8-bolt intake pattern.

Will this fit a 305 Vortec engine?
Yes. It is compatible with the 5.0L L30 305 Vortec V8 using the factory Vortec 8-bolt intake pattern.

Can I use this intake for a Vortec carburetor conversion?
Yes. This manifold is specifically designed to support converting 305 and 350 Vortec engines from factory fuel injection to a carbureted setup and includes a square-bore carburetor adapter to simplify the conversion.

Will this fit standard Small Block Chevy heads with a 12-bolt intake pattern?
No. This manifold is designed exclusively for the Vortec 8-bolt intake pattern used on 1996 and newer Vortec cylinder heads. It will not seal correctly on traditional 12-bolt Small Block Chevy heads.

Does this intake fit 4.3L Vortec V6 engines?
No. This manifold is designed for 305 and 350 Vortec V8 engines only and is not compatible with 4.3L Vortec V6 applications.

What is the water bypass requirement for Vortec engines?
Vortec engines require an external water bypass connection during installation. A 5/8-inch heater hose must be used to maintain proper coolant flow through the engine.

Does this intake include a square-bore carburetor adapter?
Yes. A square-bore carburetor adapter is included, allowing compatibility with square-bore 4-barrel carburetors.

What carburetor is recommended for this Vortec intake?
This manifold accepts a single 4-barrel carburetor. A 600-750 CFM carburetor is a common starting point for many street-driven 305 and 350 Vortec combinations. Final carburetor sizing should be based on engine displacement, camshaft specifications, and intended use.

Will this fit an LS engine?
No. LS-series engines use a completely different engine architecture, cylinder head bolt pattern, and intake manifold design. This manifold is designed exclusively for carbureted Vortec V8 applications.

What vehicles commonly use the 305 or 350 Vortec V8?
The 305 and 350 Vortec V8 engines were installed in 1996-2002 GM trucks and SUVs, including the Chevrolet C/K 1500 and 2500, GMC Sierra 1500 and 2500, Chevrolet Tahoe, GMC Yukon, Chevrolet Suburban, Chevrolet Express Van, and GMC Savana Van.

Is this a good intake for a street-driven Vortec truck or SUV build?
Yes. The dual-plane design is optimized for strong low- and mid-range torque, making it an excellent choice for street-driven trucks, SUVs, daily drivers, and weekend performance builds.