What material are these Manley intake valves made from?

These intake valves are made from high-quality stainless steel. They also feature chrome-plated stems and hard tips to improve their resistance to wear and increase their lifespan.

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

The swirl polished areas under the head and the fully machined combustion faces are designed to help optimize airflow into the cylinder. This can contribute to improved combustion efficiency for better engine performance.

Are these valves suitable for all engine builds?

These Race Master valves are specifically recommended for racing engines operating under 8000 RPM, such as those used in bracket, drag, and oval track racing. They are also noted as a recommended choice for exhaust valves in alcohol engines.

Specifications

Brand: Manley Performance
Part #: 11362-8
UPC: 807298048857

Manley Small Block Chevy LS-1 / LS-2 (LS-6 Head) 2.020 Head Diameter Race Master Intake Valves

Name: Manley Small Block Chevy LS-1 / LS-2 (LS-6 Head) 2.020 Head Diameter Race Master Intake Valves
Brand: Manley Performance
SKU: manley-performance-manley-small-block-chevy-ls-1-ls-2-ls-6-head-2-020-head-diame-t14-304032
Price: 218.97 USD
Availability: BackOrder

$218.97

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Fits 1997-2004 Chevrolet Corvette. Manley Race Master intake valves with a 2.020" head diameter, made from stainless steel for improved durability.

Key Features

Fits 1997-2004 Chevrolet Corvette, 1998-2002 Chevrolet Camaro, 1998-2002 Pontiac Firebird, 2004 Pontiac GTO, and 2004-2005 Cadillac CTS.
Constructed from high-quality stainless steel for improved durability in racing conditions.
Features chrome stems and hard tips for enhanced longevity and wear resistance.
Swirl polished under head areas and fully machined combustion faces help optimize airflow.
Race Master (straight stem) design with a 2.020 inch head diameter.
Recommended for engines operating under 8000 RPM.

⚠️ 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

If you're rebuilding the top end of your 1997-2004 Chevrolet Corvette, especially for racing applications under 8000 RPM, these Manley Race Master intake valves are a solid choice. They're built to handle the stress of bracket, drag, and oval track racing, ensuring your engine performs reliably when you need it most.

These valves are constructed from high-quality stainless steel, which offers great durability for demanding use. The stems are chrome-plated and feature hard tips for improved wear resistance over time. Manley also swirl polishes the areas under the head and fully machines the combustion faces. This attention to detail helps optimize airflow into the cylinder and can contribute to better combustion efficiency, which is key for getting the most out of your engine.

This particular valve is the Race Master style, which has a straight stem, and it features a 2.020-inch head diameter. They are also recommended for alcohol engines, particularly for exhaust applications, though these are intake valves. Make sure to check the specific dimensions, like the 4.874-inch overall length and .3133-inch stem diameter, to confirm they match your build's requirements.