What material are these exhaust valves made from?

These Manley Race Series exhaust valves are constructed from stainless steel. They also feature chrome stems and hard tips for enhanced longevity and wear resistance.

Are these valves suitable for all types of engines?

These valves are specifically designed for racing applications operating under 8000 RPM, including bracket, drag, and oval track racing. They are also the recommended choice for exhaust valves in alcohol engines.

What is the benefit of swirl polished and machined faces?

The swirl polished under-head areas and fully machined combustion faces are designed to optimize airflow into the cylinder and improve combustion efficiency for better engine performance.

Manley Chevrolet Big Block Exhaust Valve Kit 11881-8

Name: Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.422in O/A Length, 0.3415in Stem
Brand: Manley Performance
SKU: manley-performance-manley-chevrolet-big-block-exhaust-valve-kit-1-880in-head-dia-t14-879407
Price: 218.97 USD
Availability: BackOrder

Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.422in O/A Length, 0.3415in Stem

$218.97

On Backorder

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

Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.422in O/A Length, 0.3415in Stem. Stainless steel construction for durability.

Key Features

Fits Chevrolet Big Block engines.
Exhaust valve with a 1.880 inch head diameter and 5.422 inch overall length.
Features a 0.3415 inch stem diameter.
Constructed from stainless steel for good durability.
Chrome stems and hard tips add 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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Product Details

When you're rebuilding the top end of a Chevrolet big block engine, especially for racing applications under 8000 RPM, getting the right valves is crucial. These Manley Race Series exhaust valves are built to handle the stress of bracket, drag, and oval track racing, ensuring your engine breathes right when it matters most.

These exhaust valves are made from stainless steel, which is a solid choice for durability. They also feature chrome stems and hard tips, adding extra wear resistance to the parts that see the most action. The under-head areas are swirl polished and the combustion faces are fully machined. This design helps improve airflow into the cylinder and can contribute to better combustion efficiency. If you're running an alcohol-based fuel, these are specifically recommended for exhaust valve use, offering reliable performance in those demanding conditions.

You can choose between Race Master (straight stem) and Race Flo shapes to best match your engine's specific needs. Make sure to check the manufacturer's installation instructions for proper fitment and setup.