What material is this intake valve made from?

This Manley Pro Flo intake valve is constructed from stainless steel. It also features chrome-plated stems and hard tips for added durability and wear resistance.

What are the main dimensions of this valve?

The valve has a head diameter of 2.165 inches and a stem diameter of 0.3133 inches. The overall length is 4.900 inches.

Is this valve suitable for alcohol-fueled engines?

While Manley recommends these valves for exhaust applications in alcohol engines, this specific part is an intake valve. It is designed for high-performance racing engines, including those that may use alcohol as fuel.

Specifications

Brand: Manley Performance
Part #: 11620-1

Manley Chevrolet Small Block 2.165in Head .3133in Stem Severe Duty Pro Flo Intake Valve - Single

Name: Manley Chevrolet Small Block 2.165in Head .3133in Stem Severe Duty Pro Flo Intake Valve - Single
Brand: Manley Performance
SKU: manley-performance-manley-chevrolet-small-block-2-165in-head-3133in-stem-severe--t14-714617
Price: 29.39 USD
Availability: BackOrder

$29.39

On Backorder

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Manley Pro Flo Intake Valve for Chevrolet Small Block. Features 2.165in head and .3133in stem for improved airflow.

Key Features

Fits Chevrolet Small Block engines.
Features a 2.165 inch head diameter and a 0.3133 inch stem diameter.
Constructed from stainless steel for durability.
Chrome stems and hard tips enhance longevity and wear resistance.
Swirl polished under head areas and fully machined combustion faces help optimize airflow.
Designed for engines operating under 8000 RPM.

⚠️ 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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About this part

Product Details

Starting with a 2.165-inch head diameter and a .3133-inch stem, this Manley Pro Flo intake valve is built for Chevrolet Small Block engines. It's designed to handle the demands of racing applications, especially those running up to 8000 RPM.

The valve is made from stainless steel, which is a solid choice for durability in high-stress engine environments. It also has chrome-plated stems and hard tips to help them last longer and resist wear, which is important when you're pushing an engine hard. The under-head area is swirl polished and the combustion face is fully machined. This helps improve how air moves into the cylinder and how efficiently the fuel burns.

This particular valve is the single intake valve. If you're rebuilding the top end of a performance Chevrolet Small Block, these valves are a well-built option to consider for improved airflow and longevity.