What material are these Manley intake valves made from?

These Manley Pro Flo intake valves are constructed from stainless steel, a strong and durable material. They also feature chrome stems and hard tips for added wear resistance.

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 optimize airflow into the cylinder. This can help improve combustion efficiency and overall engine performance.

Are these valves suitable for alcohol-fueled engines?

While these are intake valves, Manley specifically recommends their exhaust valves for alcohol engines due to demanding conditions. These intake valves are designed for high-RPM use up to 8000 RPM.

Specifications

Brand: Manley Performance
Part #: 12356-8
UPC: 807298110011

Manley 94-97 Chevy 5.3L LS/L83 1.930 Head Diameter Pro Flo Intake Valves (Set of 8)

Name: Manley 94-97 Chevy 5.3L LS/L83 1.930 Head Diameter Pro Flo Intake Valves (Set of 8)
Brand: Manley Performance
SKU: manley-performance-manley-94-97-chevy-5-3l-ls-l83-1-930-head-diameter-pro-flo-in-t14-428499
Price: 218.97 USD
Availability: BackOrder

$218.97

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Manley Pro Flo Intake Valves for Chevy 5.3L LS/L83. Set of 8, 1.930" head diameter. Improve airflow with swirl-polished faces.

Key Features

Fits 94-97 Chevy 5.3L LS/L83 engines.
Set includes 8 intake valves.
1.930 inch head diameter and .3133 inch stem diameter.
Constructed from stainless steel for durability.
Chrome stems and hard tips enhance longevity and wear resistance.
Swirl-polished under head areas and fully machined 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

If you're rebuilding the top end of your 94-97 Chevy 5.3L LS/L83 engine, these Manley Pro Flo intake valves are a solid choice. They're designed to handle the airflow needs for engines running up to 8000 RPM, making them suitable for serious street or track use.

These valves are made from stainless steel, which is a strong material that holds up well over time. The stems are chromed and feature hard tips, adding to their durability and resistance to wear, especially in demanding applications. You'll also notice the swirl-polished areas under the head and the fully machined faces; these details help optimize how air moves into the cylinder, which can lead to improved combustion efficiency.

This set includes eight intake valves, each with a 1.930-inch head diameter and a .3133-inch stem. They're a well-built component for anyone looking to get the most out of their engine build.