What material is this valve made from?

This Manley Race Flo valve is constructed from high-quality stainless steel. It also features chrome stems and hard tips for improved 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 help improve combustion efficiency in your engine.

Are these valves suitable for alcohol-fueled engines?

Yes, these valves are recommended for use as exhaust valves in alcohol engines. They are built to handle demanding conditions and ensure reliable performance.

Specifications

Brand: Manley Performance
Part #: 11528-1
UPC: 807298049618

Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single)

Name: Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single)
Brand: Manley Performance
SKU: manley-performance-manley-big-block-chevrolet-int-2-190-head-dia-5-218-o-a-lengt-t14-597081
Price: 27.37 USD
Availability: BackOrder

$27.37

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Manley Race Flo intake valve for Big Block Chevrolet. Features a 2.190" head and 5.218" OAL for improved airflow.

Key Features

Fits Big Block Chevrolet engines.
Intake valve with a 2.190-inch head diameter and 5.218-inch overall length.
Features a .3715-inch stem diameter.
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 help optimize airflow.

⚠️ 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

This Manley Race Flo valve features a 2.190-inch head diameter and a 5.218-inch overall length, with a .3715-inch stem. It's built from high-quality stainless steel, making it a solid choice for engines that see a lot of use, especially those running under 8000 RPM. The chrome stems and hard tips are there to help them last longer and resist wear, which is always a good thing when you're pushing an engine hard.

You'll notice the under-head areas are swirl polished and the combustion faces are fully machined. This design helps optimize airflow into the cylinder and can contribute to better combustion efficiency. Manley offers these in different shapes, including the Race Flo style you're looking at, to match your engine's specific needs. They're also recommended for exhaust valves in alcohol engines, showing they can handle tough conditions.