What is the main benefit of the inward-opening throttle blades?

The inward-opening throttle blades are designed to increase performance by smoothing the airflow as it enters the intake manifold. This design choice helps prevent turbulence and ensures a more consistent air delivery to the engine.

Why is the shorter height of this throttle body important?

The shorter height is a practical design feature that makes installation easier, especially in vehicles with limited hood clearance. It also contributes to a reduction in overall weight for the engine bay.

What does the 1,375 CFM rating mean for my engine?

The 1,375 CFM (Cubic Feet per Minute) rating indicates the maximum volume of air the throttle body can flow. This higher airflow capacity is beneficial for engines that have been modified to produce more horsepower and require a greater supply of air.

FAST 4150 Flange Throttle Body 1375 CFM 307603P

Name: FAST Throttle BodyPolish4150W
Brand: FAST
SKU: fast-fast-throttle-bodypolish4150w-t14-4388500
Price: 1012.94 USD
Availability: BackOrder

FAST Throttle BodyPolish4150W

$1012.94

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 Flange Throttle Body. Polished finish for improved airflow and horsepower.

Key Features

Fits 4150 flange applications for multiport EFI systems.
Features inward-opening throttle blades for increased performance.
Polished finish contributes to improved airflow.
Shorter height design aids in easier packaging and reduces weight.
Rated to flow 1,375 CFM to support higher horsepower engines.
Precisely machined progressive linkage ensures smooth throttle operation.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Product Details

The inward-opening throttle blades on this FAST throttle body are a notable design choice, helping to increase performance by smoothing airflow into the intake manifold. This particular unit is designed for 4150 flange applications and is intended for use with Multiport Injection EFI systems. It's built with a polished finish, which not only looks good under the hood but also contributes to better airflow characteristics.

You'll notice this throttle body has a shorter overall height compared to some others. This is a practical consideration that aids in easier packaging, especially in vehicles with tight hood clearance, and also helps reduce overall weight. It's rated to flow 1,375 CFM, which means it can support significant airflow demands for engines looking to make more horsepower. The precisely machined progressive linkage ensures smooth throttle operation, preventing any abrupt changes in airflow as you press the pedal.

Keep in mind that this throttle body is not CARB approved and cannot be shipped to California. It's a solid option for builders looking to optimize their EFI system for increased airflow and power, provided it meets your specific application and emissions requirements.