What material are these Manley valves made from?

These Manley Race Flo valves are constructed from high-quality stainless steel. They also feature chrome stems and hard tips for added durability and wear resistance.

What is the benefit of the swirl polished and machined faces?

The swirl polished under head areas and fully machined combustion faces are designed to optimize airflow into the cylinder. This can lead to improved combustion efficiency.

Are these valves suitable for all types of engines?

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

Specifications

Brand: Manley Performance
Part #: 11528-8
UPC: 807298049625

Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8

Name: Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8
Brand: Manley Performance
SKU: manley-performance-manley-big-block-chevrolet-int-2-190-head-dia-5-218-o-a-lengt-t14-597082
Price: 218.97 USD
Availability: BackOrder

$218.97

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Manley Race Flo valves for Big Block Chevrolet. Set of 8, 2.190" head dia. Stainless steel construction for durability.

Key Features

Set of 8 intake valves for Big Block Chevrolet engines.
Features a 2.190-inch head diameter and 5.218-inch overall length.
Constructed from durable stainless steel for longevity.
Chrome stems and hard tips enhance wear resistance.
Swirl polished under head areas and fully machined combustion faces optimize airflow.
Race Flo shape is designed for specific racing engine requirements.

⚠️ 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

Manley Performance is well-known for making strong engine components for racing applications. If you're rebuilding the top end of your Big Block Chevrolet and need a solid set of intake valves, this Race Flo set is a great option. These valves are built for engines that see a lot of action, typically running up to 8000 RPM, making them suitable for bracket, drag, and oval track racing.

Each valve in this set is made from stainless steel, which is a smart choice for durability. They also feature chrome stems and hard tips to help them hold up to wear over time. The under-head areas are swirl polished and the combustion faces are fully machined. This design work helps improve airflow into the cylinder and makes combustion more efficient. Manley offers these in a Race Flo shape, which is designed for specific racing engine setups.

This set includes 8 intake valves, each with a 2.190-inch head diameter and a 5.218-inch overall length. They are also recommended for use in alcohol-fueled engines, especially for the exhaust side, where they can handle the demanding conditions.