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  • PAC Racing Springs #1940
  • Street Hydraulic Roller Spring 1.550 O.D.
  • 175 lbs. on seat
  • .725” max lift
  • Max RPM 6500-6700
  • Steel Retainer: 8511
  • Titanium Retainer: 8505
  • SBC/SBF Valve Lock: 9009
  • BBC Valve Lock: 9005
  • BBF Valve Lock: 9010