What material are these exhaust valves made from?

These Manley exhaust valves are constructed from high-quality stainless steel, specifically the XH-426 alloy. This material is chosen for its durability and ability to withstand the high temperatures and stresses found in performance engines.

What is the purpose of the chrome stems and hard tips?

The chrome stems and hard tips are incorporated to increase wear resistance and extend the overall lifespan of the valves. This is particularly important in high-performance applications where valves experience significant friction and impact.

Are these valves suitable for all types of engines?

These Race Master valves are designed for engines operating under 8000 RPM, making them ideal for racing applications like drag, bracket, and oval track. They are also specifically recommended for exhaust valves in alcohol engines due to their robust construction.

Specifications

Brand: Manley Performance
Part #: 11667B-8
UPC: 807298004990

Manley thru 08 Chevy Hemi 5.7L w/ Bead Loc Groove 1.575in Race Master Exhaust Valves (Set of 8)

Name: Manley thru 08 Chevy Hemi 5.7L w/ Bead Loc Groove 1.575in Race Master Exhaust Valves (Set of 8)
Brand: Manley Performance
SKU: manley-performance-manley-thru-08-chevy-hemi-5-7l-w-bead-loc-groove-1-575in-race-t14-4370614
Price: 230.31 USD
Availability: BackOrder

$230.31

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Manley Race Master exhaust valves for Chevy Hemi 5.7L. Set of 8, 1.575in bead loc groove. Stainless steel, chrome stems.

Key Features

Fits Chevy Hemi 5.7L engines.
Set includes 8 exhaust valves.
Features a 1.575-inch bead lock groove.
Constructed from durable stainless steel (XH-426).
Chrome stems and hard tips enhance wear resistance and longevity.
Swirl polished underhead areas and fully machined combustion faces 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

Starting with a 1.575-inch bead lock groove, these Manley Race Master exhaust valves are built for serious engine work. They're designed for Chevy Hemi 5.7L engines, specifically those that might see up to 8000 RPM, making them a solid choice for bracket, drag, or oval track racing applications. The stainless steel construction means they can handle the heat and stress that comes with high-performance engines.

You'll notice the chrome stems and hard tips on these valves. That's a detail that really helps with wear resistance and overall longevity, especially in demanding conditions. Manley also swirl polishes the areas under the head and fully machines the combustion faces. This isn't just for looks; it 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 valves, offering reliable performance where it counts.

This set includes eight exhaust valves, ready to be installed in your engine build. They are the Race Master straight stem style, which is a popular choice for many racing engine configurations.