What type of cylinder heads does this intake manifold fit?

This FAST intake manifold is designed to fit all versions of Small Block Chevy cylinder heads. This includes classic original heads, Vortec GM heads, and late model perimeter corner vertical bolt style crate engine heads. It is specifically engineered to port match fit RHS Small Block Chevy cylinder heads.

Can this manifold be used for fuel injection?

This specific model is the open plenum version designed for carburetor use. FAST does offer a separate port fuel injection version of this manifold that features optimized injector bung angles and an integral idle air control circuit.

What are the auxiliary water ports for?

The manifold features female pipe fittings at all four corners, serving as auxiliary water ports. These allow for the connection of external water lines, which is useful for reverse cooling applications.

FAST 4150 Open Intake Manifold 3035351 - Small Block Chevy

Name: FAST Intake Manifold Fw 4150 Open
Brand: FAST
SKU: fast-fast-intake-manifold-fw-4150-open-t14-4388693
Price: 673.80 USD
Availability: BackOrder

FAST Intake Manifold Fw 4150 Open

$673.80

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

FAST 4150 Open Intake Manifold for Small Block Chevy. Boosts mid-RPM power and torque for street, circle track, and drag racing.

Key Features

Fits a wide range of Small Block Chevy engines, including classic, Vortec, and late model perimeter bolt heads.
Features a 4150 carburetor flange and bolt machining for broad compatibility.
Designed to port match RHS Small Block Chevy cylinder heads for improved airflow.
Provides strong torque and power in the mid-RPM range for performance street, circle track, and drag race applications up to 434 cubic inches.
Includes auxiliary water ports at all four corners for external water lines in reverse cooling setups.
Features an integral water crossover and dual-sided distributor mounting points.

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Will this fit your vehicle?

Product Details

This FAST 4150 Open intake manifold is built with a specific design for Small Block Chevy engines, featuring a 4150 flange and bolt machining that works with all versions of Small Block Chevy cylinder heads. This includes classic originals, Vortec GM heads, and late model perimeter corner vertical bolt style crate engine heads. It's engineered to port match fit RHS Small Block Chevy cylinder heads, ensuring a solid connection for optimal airflow. If you're building a performance street machine, a circle track car, or a drag racer up to 434 cubic inches, this manifold is designed to give you that strong torque curve and power you need in the mid-RPM range.

Beyond its primary function, this manifold includes several thoughtful features. You'll find auxiliary water ports at all four corners, allowing for external water lines if you're setting up reverse cooling. It also has an integral water crossover and dual-sided distributor mounting points, giving you flexibility during installation. These manifolds are well-built to handle the demands of performance applications, offering a significant improvement over stock components for engines focused on mid-range power delivery.

This particular model is the open plenum version, designed for maximum airflow. FAST also offers a port fuel injection version with optimized injector bung angles and an integrated idle air control circuit, which is unique for a 4BBL-type EFI manifold. For those running a carburetor, this open design is a popular choice for maximizing airflow and power potential in the RPM range it's tuned for. It fits a wide range of vehicles, including many Ford trucks and cars from the late 60s through the 90s, like the Ford F-150, Bronco, and Gran Torino.