PAC Racing Springs PAC-R435-16 400 Series Titanium Valve Spring Retainers, 7 Degree, GM LS-Series, Set of 16

Upgrade your GM LS-Series valvetrain with PAC Racing Springs PAC-R435-16 400 Series titanium valve spring retainers. Designed for dual-spring applications, these 7-degree retainers provide a precise, lightweight solution for performance engines that require dependable spring control and reduced valvetrain mass. The stepped outer diameter profile is engineered to support compatible spring configurations while maintaining proper component alignment.
The PAC-R435-16 retainers are manufactured from titanium for an excellent strength-to-weight balance, helping reduce reciprocating mass compared with heavier retainer materials. Their 7-degree design is intended for use with matching valve locks and compatible GM LS-Series cylinder head components. Verify spring, lock, valve, and cylinder head compatibility before installation to ensure correct fitment and operating clearance.
This set includes 16 PAC Racing Springs valve spring retainers, making it suitable for a complete V8 valvetrain installation. The 400 Series construction is well suited to high-performance engine builds, including applications using dual valve springs and upgraded valvetrain components. For reliable results, install according to the engine builder’s specifications and inspect related spring and locking components during assembly.

Features:

• Brand: PAC Racing Springs

• Part Number: PAC-R435-16

• Application: GM LS-Series engines

• Material: Titanium

• Series: 400 Series

• Retainer Style: Stepped outer diameter

• Lock Angle: 7 degree

• Spring Compatibility: Dual valve spring applications

• Set Quantity: 16 retainers

• Performance Benefit: Lightweight design helps reduce valvetrain mass