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  • PAC Racing Springs #1225
  • 1.550” OD Solid Roller Dual Drag Race Spring
  • 250 lbs. on seat
  • .800” max lift
  • Max RPM 8000-8200
  • Titanium Retainer: 8505
  • SBC/SBF Valve Lock: 9009
  • BBC Valve Lock: 9005
  • BBF Valve Lock: 9010