Comp Cams Dual Valve Springs for Hyd Cams over .510 lift

Cams over .510" lift require a dual spring to maintain the correct spring pressure, as per Comp Cams recommendation. We carry these Dual Springs from Comp for all our Hydraulic FLAT TAPPET (non-roller) cams over .510" lift. Use these springs together with our 145-1003 Comp 10 degree Retainers, and our 145-1002 Comp 10 degree Locks for a perfectly matched valvetrain setup. These are for hydraulic FLAT TAPPET cams over .510" lift only, all hydraulic roller cams use a different spring. Due to the small inner diameter of the inner springs, these require using reduced diameter teflon type "PC" valve seals, use our part number 101-1049. Will not work with the stock black rubber type seals which are supplied on our Stealth heads, since they are too large of a diameter.