GSC Power Division Valve Spring Kits

2011–2025 Subaru EZ36 Engine

Part #: 5765

Overview

The GSC Power Division Valve Spring Kit for the Subaru EZ36 engine is a high-performance upgrade designed for enthusiasts seeking to maximize their engine's potential. Crafted with precision and durability in mind, this kit replaces the factory valve springs with high-quality components that support higher RPM limits and improved valve control. Whether you're building a performance street car, a track-ready machine, or an off-road beast, this kit provides the reliability and performance you need to push your Subaru EZ36 to the next level.

Engineered for those who demand excellence, the GSC Valve Spring Kit ensures your engine maintains optimal valve timing and seating at elevated RPMs, reducing valve float and enhancing overall engine stability. This upgrade is ideal for applications involving aggressive cam profiles, forced induction, or high-revving setups where stock springs may fall short. With this kit, you'll get the confidence that your valvetrain can handle increased power and RPM without sacrificing durability or consistency.

Key Features

The GSC Power Division Valve Spring Kit incorporates advanced materials and engineering to deliver superior performance and longevity. Key features include:

• Max RPM Support: Capable of handling up to 8,500 RPM, making it suitable for high-revving applications and performance builds.
• High Spring Pressure: 85 lbs at 1.3" install height ensures excellent valve control during aggressive driving and high RPM operation.
• Enhanced Valve Seating: Designed to maintain consistent valve seating pressure, reducing the risk of valve float and ensuring reliable combustion.
• Durable Titanium Retainers: Lightweight yet strong, titanium retainers reduce valvetrain mass, contributing to higher RPM potential and improved response.
• Precision Manufacturing: Manufactured to strict tolerances for perfect fitment and long-lasting performance.
• Application Specific: Designed specifically for the EZ36 engine, ensuring compatibility and optimal performance.

Construction & Design

The GSC Valve Spring Kit features high-grade materials, including titanium retainers and high-tensile steel springs, to withstand the rigors of high-performance driving. The springs are engineered with a carefully calculated coil design to provide consistent pressure across the entire RPM range. The titanium retainers are lightweight, reducing valvetrain inertia, which allows for higher RPM operation and quicker valve response. The springs and retainers are assembled with precision to ensure perfect alignment and durability, even under demanding conditions.

Installation & Fitment

The GSC Power Division Valve Spring Kit is a direct bolt-on upgrade for the Subaru EZ36 engine. Installation requires standard engine disassembly procedures, including removing the cylinder head and existing valve springs. It is recommended to have a qualified technician perform the installation to ensure proper setup and to verify correct spring seating and valve timing. No additional modifications or tuning are typically required, but a thorough inspection of the valvetrain components is advised to maximize longevity and performance.

• Requires removal of the cylinder head for installation.
• Compatible with stock and aftermarket camshafts.
• No cutting, drilling, or special tuning necessary.

What's Included

• Valve Spring Seats
• Titanium Retainers
• High-performance Valve Springs
• Installation Hardware and Instructions

Ideal For

This valve spring kit is perfect for Subaru enthusiasts who are building high-performance engines, including those with upgraded camshafts, forced induction, or high-revving setups. It is suitable for street, track, or off-road applications where engine stability at high RPM is critical. If you're looking to improve your engine's durability and responsiveness under demanding conditions, this kit provides an excellent upgrade.