Performance Valvetrain

PAC Racing Springs PAC-S102-16 valve spring retainers. Features inside design, 0.060 in thick, 1.550 in OD, 0.635 in ID, 0.855 in spring ID, chromoly, set of 16, ideal for performance builds.

PAC Racing Springs PAC-S110-16 valve spring retainers. Features inside design, 0.060 in thick, 1.500 in OD, 0.570 in ID, 0.715 in spring ID, chromoly, set of 16, ideal for performance builds.

PAC Racing Springs PAC-S134-16 valve spring retainers. Features inside design, 0.030 in thick, 1.500 in OD, 0.570 in ID, 0.715 in spring ID, chromoly, set of 16, ideal for performance builds.

PAC Racing Springs PAC-L8092-16 valve locks. Features 10-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-1210X-16 valve springs. Features RPM Series single spring design, 290 lb/in rate, 1.150 in coil bind, 1.245 in OD, fits Small Block Chevy GM 602 crate engine, set of 16, ideal for performance builds.

PAC Racing Springs PAC-R513-16 valve spring retainers. Features 500 Series, 10-degree lock angle, 0.721 in OD step, beehive spring compatible, titanium, set of 16, ideal for performance builds.

PAC Racing Springs PAC-L8036-16 valve locks. Features 8-degree lock angle, 11/32 in valve stem, standard height, 1 radius groove, steel with black oxide finish, set of 16, ideal for performance builds.

PAC Racing Springs PAC-L8026-16 valve locks. Features 10-degree lock angle, 11/32 in valve stem, +0.050 height, steel with black oxide finish, radius groove type, set of 16, ideal for performance builds.

PAC Racing Springs PAC-L8135-16 valve locks. Features mini 8-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-1294-16 valve springs. Features 1200 Series Circle Track dual spring with damper, 428 lb/in rate, 1.185 in coil bind, 1.545 in OD, set of 16, ideal for circle track racing.

PAC Racing Springs PAC-S190-16 valve spring shims. Features 0.020 in thick, 1.250 in OD, 0.570 in ID, steel, set of 16, ideal for precise valve spring adjustments in performance builds.

PAC Racing Springs PAC-R510-16 valve spring retainers. Features 500 Series, 10-degree lock angle, 0.640 in OD step, beehive spring compatible, titanium, set of 16, ideal for performance builds.