What material are these Manley exhaust valves made from?

These Manley Race Flo exhaust valves are constructed from stainless steel. This material is chosen for its durability and ability to withstand the high temperatures and pressures found in performance engines.

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

The swirl-polished under-head area is designed to help optimize airflow into the combustion chamber. This can contribute to improved combustion efficiency and overall engine performance.

Are these valves suitable for use in alcohol engines?

Yes, these specific exhaust valves are recommended for use in alcohol engines. They are built to handle the demanding conditions associated with alcohol fuel.

Specifications

Brand: Manley Performance
Part #: 11361-8
UPC: 807298048833

Manley Small Block Chevy LS-1 / LS-2 (LS-6 Head) 1.550 Head Diameter Race Flo Exhaust Valves

Name: Manley Small Block Chevy LS-1 / LS-2 (LS-6 Head) 1.550 Head Diameter Race Flo Exhaust Valves
Brand: Manley Performance
SKU: manley-performance-manley-small-block-chevy-ls-1-ls-2-ls-6-head-1-550-head-diame-t14-255030
Price: 218.97 USD
Availability: InStock

$218.97

Only 2 left in stock

Fits 1997-2004 Chevrolet Corvette. Manley Race Flo exhaust valves are made from stainless steel with a swirl-polished under-head area for improved airflow.

Key Features

Fits 1997-2004 Chevrolet Corvette, 2004 Pontiac GTO, 1998-2002 Chevrolet Camaro, 1998-2002 Pontiac Firebird, and 2004-2005 Cadillac CTS.
These are exhaust valves with a 1.550 inch head diameter and a .3136 inch stem diameter.
Constructed from stainless steel for durability.
Features chrome stems and hard tips for increased wear resistance.
The under-head area is swirl-polished to help optimize airflow.
The Race Flo shape is designed for 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

When you're rebuilding the top end of your 1997-2004 Chevrolet Corvette, you want parts that can handle the stress. This set includes Manley Race Flo exhaust valves, designed for engines running up to 8000 RPM. They're a solid choice for bracket, drag, and oval track racing applications.

These exhaust valves are made from stainless steel, which holds up well under heat and pressure. The stems are chromed for better wear resistance, and the under-head area is swirl-polished to help improve airflow into the combustion chamber. The Race Flo shape is specifically designed for optimal performance in racing engines.

If you're building an engine that will run on alcohol, these valves are recommended for exhaust use. They're a well-built component that can make a difference when you're pushing your engine hard.