PAC RACING SPRINGS PAC-1223X-16 PAC Racing Springs PAC-1223X-16 RPM Series Ovate Beehive Valve Springs, Set of 16

Upgrade valve train performance with PAC Racing Springs PAC-1223X-16 RPM Series Ovate Beehive Valve Springs. Designed for demanding high-performance applications, this set of 16 valve springs combines an ovate beehive profile with a 324 lb/in spring rate to support reliable valve control and consistent operation throughout the engine's usable RPM range. The specialized design helps reduce moving mass while maintaining the spring force required for performance-oriented cylinder heads.
The PAC-1223X-16 valve springs feature a 0.900-inch coil bind specification and are engineered for applications requiring dependable spring performance under increased load. Their ovate beehive configuration promotes compatibility with modern valve train designs and can help improve stability at elevated engine speeds. This makes them a practical choice for builders, engine professionals, and enthusiasts seeking a matched set of replacement or upgraded valve springs.
Each set includes 16 PAC Racing Springs RPM Series valve springs for a complete V8 engine application. The springs are supplied as a coordinated set to support consistent installation across the cylinder head assembly. Verify installed height, retainer compatibility, guide clearance, seat pressure, open pressure, and coil bind requirements before installation to ensure proper fitment for the specific engine combination. PAC Racing Springs PAC-1223X-16 springs are built for performance-focused valve train systems where accurate spring selection and dependable operation are essential.

Features:

• Brand: PAC Racing Springs

• Part Number: PAC-1223X-16

• Series: RPM Series

• Spring Type: Ovate beehive valve spring

• Spring Rate: 324 lb/in

• Coil Bind: 0.900 in

• Outer Diameter: 1.105 in

• Inner Diameter: 0.943 in

• Quantity: Set of 16

• Application: Performance valve train systems