LS Retainers 1905/1204X/1209X
Titanium retainers to suit dual spring 1905/1204X/1209X.
PAC 1204X Dual Spring x 16
145lb @ 1.800" installed height. 385lb at 0.650" valve lift.
PAC 1209X Dual Spring x 16
160lb @ 1.800″ installed height. 485lb at 0.650″ valve lift.
Nitrided Beehive LS Race Springs
130lb seat pressure. 360lb at .600" valve lift. For OEM retainer.
PAC 1209X Valve Springs with Retainers
160lb at 1.800″ installed height. 485lb at 0.650″ valve lift.
PAC 1204X Valve Spring Set
145lb at 1.800″ installed height. 385lb at 0.650″ valve lift.
LS Dual 1905 Valve Spring Kit
160lb at 1.800" installed height. 425lb at 1.125" valve lift