What material are these Manley valves made from?

These Manley Race Flo intake valves are constructed from stainless steel. They also feature chrome-plated stems and hardened tips to enhance their durability and resistance to wear.

What is the purpose of the swirl-polished and machined faces?

The swirl-polished under-head areas and fully machined combustion faces are designed to improve airflow into the engine's cylinders. This can contribute to better combustion efficiency and overall engine performance.

Are these valves suitable for street use or only racing?

These valves are part of Manley's Race Series and are specifically engineered for demanding racing applications like bracket, drag, and oval track racing, particularly for engines operating under 8000 RPM.

Specifications

Brand: Manley Performance
Part #: 11522-8
UPC: 807298049502

Manley Chevy Small Block 1.940in Head Diameter Race Flo Intake Valves (Set of 8)

Name: Manley Chevy Small Block 1.940in Head Diameter Race Flo Intake Valves (Set of 8)
Brand: Manley Performance
SKU: manley-performance-manley-chevy-small-block-1-940in-head-diameter-race-flo-intak-t14-129316
Price: 218.97 USD
Availability: BackOrder

$218.97

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Manley Chevy Small Block 1.940in Head Diameter Race Flo Intake Valves (Set of 8). Set of 8 stainless steel valves for high-performance engines.

Key Features

This product includes a set of 8 Manley Race Flo intake valves.
Each valve has a 1.940-inch head diameter.
Constructed from durable stainless steel for longevity.
Features chrome-plated stems and hardened tips for improved wear resistance.
Swirl-polished under-head areas and fully machined combustion faces help optimize airflow.
Designed for Chevy small block engines operating under 8000 RPM.

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About this part

Product Details

In this set, you get eight Manley Race Flo intake valves, each with a 1.940-inch head diameter, designed for Chevy small block engines. These valves are built for racing applications, specifically for engines that operate under 8000 RPM, making them a solid choice for bracket, drag, and oval track use.

These Race Series valves are constructed from stainless steel, which is known for its durability. They feature chrome-plated stems and hardened tips to help them stand up to wear over time. The under-head areas are swirl-polished, and the combustion faces are fully machined. This machining helps improve airflow into the cylinder and can contribute to better combustion efficiency. The Race Flo shape is one of the options Manley offers to help match the valve to your engine's specific needs.

If you're rebuilding the top end of a performance Chevy small block and need reliable intake valves, these are a well-built option. They are also recommended for use as exhaust valves in alcohol-fueled engines, showing their resilience in demanding conditions.