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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
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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
GTIN: 00193564532213
Outer Diameter – Outer Valve Spring | 1.695 IN |
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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 |
Recommended Valve Spring Cup | C207 |
Valve Spring Series | 1300 Series |
Valve Spring Type | Triple |