What makes this valve suitable for extreme applications?

This valve is constructed from XH-432 XtremeAlloy, a material chosen for its ability to handle extreme force and heat. It also features chrome stems and hard tips for added durability and wear resistance in demanding conditions.

How does the design improve engine performance?

The under-head area is swirl polished to help improve airflow into the cylinder. The combustion face is also fully machined, which contributes to a more efficient combustion process.

Is this valve sold individually or as a set?

This product listing is for a single exhaust valve. You will need to purchase the appropriate quantity for your engine build.

Specifications

Brand: Manley Performance
Part #: 11711-1
UPC: 807298056388

Manley Small Block Chevy 1.600 Dia +.400 Installed Height Extreme Alloy Exhaust Valve (Single Valve)

Name: Manley Small Block Chevy 1.600 Dia +.400 Installed Height Extreme Alloy Exhaust Valve (Single Valve)
Brand: Manley Performance
SKU: manley-performance-manley-small-block-chevy-1-600-dia-400-installed-height-extre-t14-130631
Price: 74.57 USD
Availability: BackOrder

$74.57

On Backorder

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

Manley Performance Extreme Alloy exhaust valve for Small Block Chevy. Built for extreme heat and force with XH-432 XtremeAlloy.

Key Features

Fits Small Block Chevy engines.
Features XH-432 XtremeAlloy material for extreme heat and force resistance.
Chrome stems and hard tips offer exceptional longevity and wear resistance.
Swirl polished under head areas improve airflow.
Fully machined combustion faces enhance combustion efficiency.
This is a single exhaust valve.

⚠️ 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 building a high-performance Small Block Chevy engine for serious competition, like circle track racing with restricted carbs or even marine applications, you need exhaust valves that can handle extreme heat and force. This Manley Extreme Alloy exhaust valve is built specifically for those demanding jobs.

The heart of this valve is its XH-432 XtremeAlloy material, a well-known choice for its ability to withstand intense conditions. Manley also adds chrome stems and hard tips, which are notable for their wear resistance and help the valve last a long time under stress. Plus, the under-head area is swirl polished and the combustion face is fully machined. This helps improve airflow into the cylinder and makes for a more efficient burn.