PAC1027x Dual Spring Kit w/ Titanium Retainers


PAC Racing Springs .700″ spring kit featuring PAC Racing 1207X valve springs is the newest offering in valve spring technology with the latest processes and material for maximum spring life. PAC Racing is a leader in valve spring technology.

PAC’s 1207X dual valve spring is part of their RPM Series spring line up, and it has a max valve lift rating of .700″! This is an excellent setup for anyone running aggressive lift with their hydraulic roller camshaft, as well as those running factory GM rocker arms with a low-lash solid roller camshaft!

Kit includes the following: Spring Seats, Valve Seals, PAC 1207X Dual Springs, and Titanium Retainers (utilizes GM factory valve stem locks, not included)


  • Install Height: 1.800″
  • Closed Spring Pressure: 155 lb. @ 1.800″ Installed Height
  • Open Spring Pressure: 436 lb. @ 1.150″ Height (.650″ Lift)
  • Maximum Spring Lift: .700″
  • Coil Bind 1.000″

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