What is the purpose of a Pro PAC alloy in valve springs?

Pro PAC alloy is a specific material chosen by Ferrea for its strength and ability to withstand high temperatures and pressures. This helps the valve springs maintain their intended tension and function reliably under demanding engine conditions.

Is this a complete set of valve springs for an engine?

No, this product is a single valve spring. It is designed to be used as part of a complete valve spring kit or system for your Chevrolet LS1 or LS7 engine.

What does the 5/16 inch conversion kit refer to?

The 5/16 inch conversion kit indicates that these springs are designed to work with a specific valve stem diameter. This allows them to be installed on LS1 and LS7 engines that have been modified to accept this larger stem size.

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Specifications

Brand: Ferrea
Part #: S99101-1

Ferrea Chevrolet LS1/LS7 (5/16 Conv Kit) Dual Pro PAC Alloy Valve Spring - Single (Drop Ship Only)

Name: Ferrea Chevrolet LS1/LS7 (5/16 Conv Kit) Dual Pro PAC Alloy Valve Spring - Single (Drop Ship Only)
Brand: Ferrea
SKU: ferrea-ferrea-chevrolet-ls1-ls7-5-16-conv-kit-dual-pro-pac-alloy-valve-spring-si-t14-419270
Price: 51.44 USD
Availability: BackOrder

$51.44

On Backorder

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

Ferrea Dual Pro PAC Alloy Valve Spring for Chevrolet LS1/LS7 engines. Single spring, 5/16" conversion kit.

Key Features

Fits Chevrolet LS1 and LS7 engines with the 5/16 inch conversion kit.
Constructed from Ferrea's Pro PAC alloy for durability.
Designed as a single valve spring for performance applications.
Helps maintain consistent valve spring pressure.

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About this part

Product Details

The 5/16 inch conversion kit for your Chevrolet LS1 or LS7 engine uses a unique Pro PAC alloy in its construction. This material choice is key to how these springs perform under the stress of high-RPM operation. They are designed to handle the demands of modified engines where stock springs might not keep up.

This is a single spring, intended as part of a larger system for your engine's valve train. Ferrea is known for making well-built components for performance applications, and these springs are no exception. They are built to maintain consistent pressure, which is crucial for proper valve control and preventing valve float when you're really pushing the engine.