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PAC Racing 1300 Series Triple Valve Spring Set

0.635 in. ID – 1.695 in. OD – 2.300 in. installed Height – 1.100 in. Max Valve Lift


Your Price: $633.73

SKU: PAC-1353-16

In Stock

PAC Racing’s 1300 Series Drag Race Triple Valve Spring is the manifestation of the latest technology in the drag racing valvetrain aftermarket. Traditional springs were made with higher loads and rates without concern of spring mass and frequency. PAC Racing has taken years of research and coupled that with exotic new heat treatment methods to produce the next generation of drag racing valve springs. The 1300 Series springs feature a 15-30% reduction in physical mass. This, coupled with a natural frequency increase of 20%, enables your engine to rev higher, faster, and last longer even with aggressive camshaft profiles. These springs are constructed of our signature PACaloy super clean wire and are heat-treated in-house for precise spring rates and enhanced strength. They undergo a multi-peen process to optimize service life as well. Unique to the 1300 Series, these springs then receive ID/OD chamfer finishing, a run through the polisher, and a Nano-Peen™ proprietary surface treatment to improve operating cycles.

  • Built using our signature PACaloy super clean wire to ensure strength and durability
  • In-house heat-treating for precise spring rates and increased strength
  • Multi-peen process to optimize service life
  • ID/OD chamfer finishing
  • Polishing to improve operating cycles
  • Nano-Peen™ Proprietary Surface Treatment
SKU: PAC-1353-16 Categories: , ,

GTIN: 00193564532213

Outer Diameter – Outer Valve Spring

1.695 IN

Inner Diameter – Outer Valve Spring

1.195 IN

Inner Diameter – Middle Valve Spring

0.871 IN

Inner Diameter – Inner Valve Spring

0.635 IN

Installed Load

500 PS

Installed Load / Height (Valve Closed)

500 LB @ 2.300 IN

Open Height

1.200 IN

Open Load

1500 PS

Open Load / Height (Valve Open)

1500 LB @ 1.200 IN

Valve Spring Rate

900 PS

Max Coil Bind

1.140 IN

Max Valve Lift

1.100 IN

Recommended Valve Spring Retainer – 400 Series

R401, R402

Recommended Valve Spring Retainer – 500 Series

R501, R502

Recommended Valve Spring Retainer – 600 Series

R601, R602

Recommended Valve Spring Seat

S109, S133

Valve Spring Series

1300 Series

Valve Spring Type

Triple