Hamilton Diesel 5.9L 1989 - 1998 12 Valve Cummins HD BeeHiveSprings & Billet Retainers/Keepers ( 07-s-001 )

Hamilton Diesel 5.9L 1989 - 1998 12 Valve Cummins HD BeeHiveSprings & Billet Retainers/Keepers ( 07-s-001 )

Hamilton Diesel's 12 valve springs were designed to fix many of the problems in the 12v valvetrain. Factory and “60lb” springs do not have enough spring pressure to adequately control the valvetrain in all conditions. In fact at 1.4” they...

$ 549.00
  • Category: Cummins 1989 – 1993 12V 5.9L Engine Components, Cummins 1994 – 1998 12V 5.9L Engine Components

Hamilton Diesel's 12 valve springs were designed to fix many of the problems in the 12v valvetrain.
Factory and “60lb” springs do not have enough spring pressure to adequately control the valvetrain in all conditions. In fact at 1.4” they have exactly the same pressure as factory springs!. 

 

Part # 07-s-001

Trucks running over 3500rpm & 35lb's of boost WILL experience valve float with "HD" 60lb springs.

These springs are good for up to 5000RPM & 100PSI of boost. 

Features:

  • Beehive design to reduce valvetrain mass, increase initial acceleration of the valve, and to cancel spring harmonics.
  • Nitrided to prevent corrosion.
  • Made with only the best ovate wire available to handle cams with high lift.
  • Must be used with our 10° locks and ultra-light 4140 retainers.
  • These springs will easily handle cams with .700” lift