Notice: Product Images may differ from the actual product. Image may be a representation of this item.
PAC Racing RPM Series Dual Valve Spring Set – GM Gen III/IV LS
0.680 in. ID – 1.290 in. OD – 1.800 in. installed Height – 0.700 in. Max Valve Lift
Your Price: $399.25
SKU: PAC-1206X-16
In Stock
–
PAC Racing’s Street Performance RPM Series Beehive Valve Springs are constructed using our signature PACaloy super clean wire and are heat-treated in-house for precision spring rates and improved strength. They also receive a multi-peen process, polishing, and a Nano-Peen™ proprietary surface treatment for service life optimization. Applications include GM Gen III/IV LS, Ford 2V and 4V Mod Motors, Ford Coyote, Big Block Chevy, Ford 5.4L GT500 & Cobra Jet, Chrysler 6.4L Gen III Hemi, GM Gen IV LS7, and Ford Godzilla 7.3L.
- 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
- Polishing to improve operating cycles
- Nano-Peen™ proprietary surface treatment
GTIN: 00193564531452
| Outer Diameter – Outer Valve Spring | 1.290 IN |
|---|---|
| Inner Diameter – Outer Valve Spring | 0.950 IN |
| Inner Diameter – Inner Valve Spring | 0.680 IN |
| Installed Height | 1.800 IN |
| Installed Load / Height (Valve Closed) | 145 LB @ 1.800 IN |
| Open Height | 1.150 IN |
| Open Load | 411 PS |
| Open Load / Height (Valve Open) | 411 LB @ 1.150 IN |
| Valve Spring Rate | 409 PS |
| Max Coil Bind | 1.000 IN |
| Max Valve Lift | 0.700 IN |
| Recommended Valve Spring Retainer – 300 Series | R335 |
| Recommended Valve Spring Retainer – 400 Series | R435, R450 |
| Recommended Valve Spring Retainer – 500 Series | R550 |
| Recommended Valve Spring Retainer – 600 Series | R635, R650 |
| Recommended Valve Spring Seat | S129, S135, S136 |
| Valve Spring Series | RPM Series |
| Valve Spring Type | Dual |
| Primary Market | Circle Track|Street Performance |