What material are these Manley exhaust valves made from?

These Manley Race Master exhaust valves are constructed from high-quality stainless steel, specifically an XH-426 alloy for the exhaust valves. This material is chosen for its durability under high heat conditions.

Are these valves suitable for all Small Block Chevy engines?

These valves are designed for Small Block Chevrolet engines, particularly those operating under 8000 RPM and in demanding racing applications. It's important to confirm the 1.625" head diameter and .3110" stem diameter are compatible with your specific cylinder heads.

Do these valves come with any hardware or seals?

This set includes eight Manley Race Master exhaust valves. Valve seals and keepers are typically sold separately and should be chosen based on your cylinder head and valve spring specifications.

Specifications

Brand: Manley Performance
Part #: 11347-8
UPC: 807298018201

Manley Small Block Chevrolet 1.625 Head DIA / .3110in Stem DIA Race Master Exhaust Valves (Set of 8)

Name: Manley Small Block Chevrolet 1.625 Head DIA / .3110in Stem DIA Race Master Exhaust Valves (Set of 8)
Brand: Manley Performance
SKU: manley-performance-manley-small-block-chevrolet-1-625-head-dia-3110in-stem-dia-r-t14-495135
Price: 304.19 USD
Availability: BackOrder

$304.19

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 Race Master exhaust valves for Small Block Chevy. Set of 8, 1.625" head, .311" stem. Stainless steel construction for durability.

Key Features

Fits Small Block Chevrolet engines.
Set includes 8 exhaust valves.
Features a 1.625 inch head diameter and a .3110 inch stem diameter.
Constructed from durable stainless steel for the exhaust side.
Chrome stems and hard tips enhance longevity and wear resistance.
Swirl polished underhead areas and fully machined faces optimize airflow.

These valves are designed for Small Block Chevrolet engines. Please verify the dimensions and specifications match your specific cylinder head requirements.

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About this part

Product Details

If you're rebuilding the top end of a Small Block Chevrolet engine, these Manley Race Master exhaust valves are a solid option. They're built for demanding applications, like bracket, drag, and oval track racing, especially in engines that run up to 8000 RPM. You get a set of eight, ready to go into your cylinder heads.

These valves are made from stainless steel, which is a strong choice for exhaust components that deal with high heat. The stems are chrome-plated for better wear resistance, and the tips are hardened to stand up to valve spring pressure over time. Manley also swirl polishes the area under the head to help smooth out airflow, and the entire valve is machined for precise dimensions. They're even recommended for alcohol-fueled engines, which run hotter and put more stress on exhaust valves.

You'll want to make sure these dimensions work for your specific cylinder heads. The head diameter is 1.625 inches, and the stem diameter is .3110 inches. This set is for the exhaust side, so you'll need a separate set for your intake valves if you're doing a full rebuild.