What material are these intake valves made from?

These Manley Race Series intake valves are constructed from stainless steel. They also feature chrome stems and hard tips for added durability and wear resistance.

What is the benefit of the swirl polished under-head area?

The swirl polished under-head area on these valves is designed to help optimize airflow into the combustion chamber, contributing to better engine efficiency.

Are these valves suitable for all types of engines?

These Race Master valves are specifically designed for racing engines operating under 8000 RPM, such as those used in bracket, drag, or oval track racing. They are also recommended for alcohol engines.

Specifications

Brand: Manley Performance
Part #: 11616-1
UPC: 807298000763

Manley Ford 4.6L DOHC (4 Valve) Triple Groove 37mm Race Master Intake Valves - Single

Name: Manley Ford 4.6L DOHC (4 Valve) Triple Groove 37mm Race Master Intake Valves - Single
Brand: Manley Performance
SKU: manley-performance-manley-ford-4-6l-dohc-4-valve-triple-groove-37mm-race-master--t14-479751
Price: 29.39 USD
Availability: BackOrder

$29.39

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Manley Ford 4.6L DOHC (4 Valve) Race Master Intake Valves - Single. Stainless steel construction for durability.

Key Features

Fits Ford 4.6L DOHC (4 Valve) engines.
Race Master straight stem design.
Constructed from stainless steel for durability.
Chrome stems and hard tips enhance wear resistance.
Swirl polished under-head areas and fully machined combustion faces help optimize airflow and combustion efficiency.
Recommended 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

If you're rebuilding the top end of your Ford 4.6L DOHC (4 Valve) engine for racing, you'll want to consider these Manley Race Series intake valves. They're built to handle the stress of engines running up to 8000 RPM, making them a solid choice for bracket, drag, or oval track applications.

These valves are made from stainless steel, which is a strong material that holds up well over time. They also feature chrome stems and hard tips to resist wear, and the under-head areas are swirl polished to help improve airflow into the combustion chamber. The combustion faces are fully machined for better efficiency.

Manley offers these in a Race Master straight stem design, which is what you're looking at here. Make sure these are the right fit for your specific cylinder head setup.