Performance Valvetrain

PAC Racing Springs PAC-L8025 valve lock. Features 10-degree lock angle, 11/32 in valve stem, -0.050 height, steel with black oxide finish, each, ideal for performance builds.

PAC Racing Springs PAC-R401-16 valve spring retainers. Features 400 Series, 10-degree lock angle, 1.185 in/0.865 in/0.635 in OD steps, triple spring compatible, titanium, +0.050 height, set of 16,...

PAC Racing Springs PAC-S138-16 valve spring retainers. Features inside design, 0.060 in thick, 1.270 in OD, 0.575 in ID, 0.615 in spring ID, chromoly, set of 16, ideal for performance builds.

PAC Racing Springs PAC-1219 valve spring. Features 1200 Series ovate beehive design, 340 lb/in rate, 1.100 in coil bind, 1.307 in OD, fits GM LS-Series, each, ideal for performance builds.

PAC Racing Springs PAC-L8117-16 valve locks. Features 8-degree lock angle, 8 mm valve stem, standard height, titanium with natural finish, radius groove, set of 16, ideal for performance builds.

PAC Racing Springs PAC-S103-16 valve spring retainers. Features inside design, 0.060 in thick, 1.550 in OD, 0.575 in ID, 0.770 in spring ID, chromoly, set of 16, ideal for performance builds.

PAC Racing Springs PAC-R619-16 valve spring retainers. Features 600 Series, 8-degree lock angle, 1.140 in/0.735 in OD steps, 1.450 in OD, dual spring compatible, Pacaloy steel, set of 16, ideal for...

PAC Racing Springs PAC-1220X-16 valve springs. Features RPM Series beehive design, 370 lb/in rate, 1.210 in coil bind, 1.000 in/1.445 in OD, set of 16, ideal for high-performance builds.

PAC Racing Springs PAC-S117-16 valve spring retainers. Features inside design, 0.060 in thick, 1.550 in OD, 0.575 in ID, 0.730 in spring ID, chromoly, set of 16, ideal for performance builds.

PAC Racing Springs PAC-R334-16 valve spring retainers. Features 300 Series, 7-degree lock angle, 0.850 in/0.600 in OD steps, dual spring compatible, chromoly, set of 16, ideal for performance builds.

PAC Racing Springs PAC-1201 valve spring. Features 1200 Series Circle Track single spring with damper, 540 lb/in rate, 1.115 in coil bind, 1.260 in OD, each, ideal for circle track racing.

PAC Racing Springs PAC-1202-16 valve springs. Features 1200 Series Circle Track dual spring design, 540 lb/in rate, 1.100 in coil bind, 1.244 in OD, set of 16, ideal for circle track racing.