PAC Racing Springs PAC-R312-16 300 Series Chromoly Valve Spring Retainers for Ford Modular Engines

PAC Racing Springs PAC-R312-16 valve spring retainers are designed for Ford Modular engines using beehive-style valve springs. This set includes 16 retainers manufactured from high-strength chromoly steel for dependable performance in demanding street, race, and performance applications. The 300 Series construction provides a durable foundation for upgraded valvetrain assemblies while supporting consistent spring and retainer alignment.
The PAC-R312-16 retainers feature a 7-degree valve lock angle and a stepped outer design for compatibility with beehive springs. The 0.570-inch outside diameter step is engineered to provide the required spring seating interface without listing unnecessary product dimensions. These retainers are intended for use with compatible valve springs, locks, valves, and cylinder heads, so verify valvetrain specifications before installation.
Built by PAC Racing Springs, the PAC-R312-16 set offers a practical solution for builders replacing factory retainers or assembling a performance-oriented Ford Modular valvetrain. Chromoly construction helps deliver the strength and durability needed for elevated spring pressures and increased engine speeds. Proper installation should include confirming spring, retainer, lock, and valve compatibility, along with checking installed height, retainer-to-seal clearance, and overall valvetrain geometry.

Features:

• Brand: PAC Racing Springs

• Part Number: PAC-R312-16

• Application: Ford Modular engines

• Series: 300 Series

• Material: Chromoly steel

• Design: Stepped valve spring retainer for beehive springs

• Lock Angle: 7 degrees

• Retainer Step: 0.570-inch outside diameter

• Quantity: Set of 16

• Use: Performance and replacement valvetrain applications