Performance Valvetrain

PAC Racing Springs PAC-R615-16 valve spring retainers. Features 600 Series, 10-degree lock angle, 1.110 in/0.710 in OD steps, dual spring compatible, Pacaloy steel, set of 16, ideal for performance builds.

PAC Racing Springs PAC-S105-16 valve spring retainers. Features inside design, 0.060 in thick, 1.550 in OD, 0.575 in ID, 0.700 in spring ID, chromoly, set of 16, ideal for performance builds.

PAC Racing Springs PAC-S134 valve spring locator. Features inside design, 0.030 in thick, 1.500 in OD, 0.570 in ID, 0.715 in spring ID, chromoly, each, ideal for performance builds.

PAC Racing Springs PAC-S136-16 valve spring retainers. Features inside design, 0.030 in thick, 1.270 in OD, 0.510 in ID, 0.680 in spring ID, chromoly, set of 16, ideal for performance builds with RPM dual springs.

PAC Racing Springs PAC-L8141 valve lock. Features mini 8-degree lock angle, 8 mm valve stem, standard height, steel with black oxide finish, fits GM LS-Series, each, ideal for performance builds.

PAC Racing Springs PAC-LR8067-16 valve locks. Features 10-degree lock angle, 5/16 in valve stem, standard height, steel with black oxide finish, set of 16, ideal for performance builds.

PAC Racing Springs PAC-L8074-16 valve locks. Features 8-degree lock angle, 5/16 in valve stem, standard height, steel with black oxide finish, radius groove type, set of 16, ideal for performance builds.

PAC Racing Springs PAC-L8127-16 valve locks. Features mini 8-degree lock angle, 3/8 in valve stem, standard height, steel with black oxide finish, set of 16, ideal for performance builds.

PAC Racing Springs PAC-L8067-16 valve locks. Features 10-degree lock angle, 5/16 in valve stem, standard height, steel with black oxide finish, set of 16, ideal for performance builds.

PAC Racing Springs PAC-R553-16 valve spring retainers. Features 500 Series, 8-degree lock angle, 1.070 in/0.750 in OD steps, 1.440 in OD, dual spring compatible, titanium, set of 16, ideal for performance builds.

PAC Racing Springs PAC-R532-16 valve spring retainers. Features 500 Series, mini 8-degree lock angle, 0.890 in/0.600 in OD steps, dual spring compatible, titanium, set of 16, ideal for performance builds.

PAC Racing Springs PAC-R538-16 valve spring retainers. Features 500 Series, 10-degree lock angle, 1.140 in/0.815 in OD steps, 1.475 in OD, dual spring compatible, titanium, set of 16, ideal for performance builds.