Howards Cams Pacaloy® Roller Valve SpringsStyle: Dual Outer O.D.: 1.550"Closed Pressure: 250 @ 2.000"Open Pressure: 765 @ 1.200"Coil Bind: 1.150"
Howards Cams Pacaloy® Mechanical Roller Valve Springs w/ Special ProcessingStyle: Dual with DamperOuter O.D.: 1.574"Closed Pressure: 265 @ 2.000"Open Pressure: 705 @ 1.200"Coil Bind: 1.150"
Howards Cams Pacaloy® Mechanical Roller Valve Springs w/ Special ProcessingStyle: Triple Outer O.D.: 1.681"Closed Pressure: 500 @ 2.200"Open Pressure: 1256 @ 1.300"Coil Bind: 1.100"