LS Race Dual Valve Springs - Solid Roller 250lbs@1.800" / 600 lbs/in Max 0.750" lift, 1.274" OD

PAC 1238X Dual Valve Springs - LS Race Solid Roller - 1200 RPM Series

High Frequency 1200 RPM Series Valve Springs for Drag Racing, Street / Strip and Circuit Endurnce racing. High Rate & High Frequency. 

PAC 1238X Features 

• 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

PAC 1238X Specifications:

• Part Number:    PAC-1238X-16
• Description:       RPM Series - Small OD LS Style Solid Roller Race Spring  
• Spring Type:        Dual Springs
• Lift Max (in)”        0.755" Max lift with .060" to coil bind safety.      
• O.D. (in):     1.2740"   
• Inside Spring I.D. (in):    0.900" 
• Install Load (LB):    250 lbs @ 1.800" | 190 lbs @ 1.900"
• Install Height (in):   1.800"
• Valve Spring Mass (g) 87g
• Open Load (LB):   
• Open Height (in):    
• Coil Bind Max (in):    0.985"
• Damper:        No
• Rate:   600 lbs/inch
• Quantity: 16 

PAC 1238X Matching Components: 

• R432 - 400 Series Sportsman Titanium Retainers
• R532 - 500 Series Pro titanium Retainers
• R632 - 600 Series Tool Steel Retainers 
• S128 - 
• S138 -