What material are these Manley exhaust valves made from?

These Manley Street Series exhaust valves are made from high-quality stainless steel. They also feature chrome stems and hard tips for added durability and wear resistance.

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

The swirl polished under-head areas help to improve airflow as exhaust gases exit the cylinder. This can contribute to better overall engine performance.

Does this kit include intake valves?

No, this specific kit (Part #10883-8) is for exhaust valves only. Manley also offers intake valves (part #NK-841) separately.

Manley Chevrolet Big Block Exhaust Valve Kit 10883-8

Name: Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem
Brand: Manley Performance
SKU: manley-performance-manley-chevrolet-big-block-exhaust-valve-kit-1-900in-head-dia-t14-879337
Price: 172.21 USD
Availability: BackOrder

Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem

$172.21

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. Made from high-quality stainless steel for durability and improved airflow.

Key Features

Fits Chevrolet Big Block engines.
Exhaust valve kit with a 1.900-inch head diameter.
Overall length is 5.422 inches with a 0.3415-inch stem.
Crafted from high-quality stainless steel for durability.
Chrome stems and hard tips increase wear resistance.
Under head areas are swirl polished to improve 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

If you're working on a Chevrolet Big Block engine and looking to improve its breathing, this Manley Performance exhaust valve kit is a solid option. These valves are designed to handle stock or mildly modified street engines, helping to boost performance where it counts. They are built from high-quality stainless steel, which means they'll stand up to the heat and stress of regular use over the long haul.

What sets these valves apart is the attention to detail in their construction. The stems are chromed for better wear resistance, and the areas under the head are swirl polished to help smooth out airflow as the exhaust gases exit the cylinder. The combustion faces are also fully machined, which contributes to better combustion efficiency. You can choose between a straight stem or a Street Flo shape, depending on what works best for your specific engine build.

This kit includes exhaust valves with a 1.900-inch head diameter and a 5.422-inch overall length, featuring a 0.3415-inch stem. They are a direct replacement for many Chevrolet Big Block applications, making them a straightforward upgrade for your engine rebuild.