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AFR's 8020 spring is designed for use with hydraulic flat tappet cam shafts up to .550" lift.

  • 1.437” OD Hydraulic Flat Tappet
  • 125 lbs. on seat
  • .550” max lift
  • Max RPM 6100-6300
  • Steel Retainer: 8510
  • SBC/SBF Valve Lock: 9009

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