Performance Valvetrain

PAC Racing Springs PAC-R450-16 valve spring retainers. Features 400 Series, mini 8-degree lock angle, 0.940 in/0.685 in OD steps, dual spring compatible, titanium, set of 16, ideal for performance builds.

PAC Racing Springs PAC-1905-16 valve springs. Features Hot Rod Series dual spring design, 392 lb/in rate, 1.020 in coil bind, 1.304 in OD, set of 16, ideal for hot rod performance builds.

PAC Racing Springs PAC-1356-16 valve springs. Features 1300 Series Drag Race dual spring design, 780 lb/in rate, 1.130 in coil bind, 1.500 in OD, set of 16, ideal for drag racing applications.

PAC Racing Springs PAC-1247-16 valve springs. Features 1200 Series Drag Race triple spring design, 689 lb/in rate, 1.130 in coil bind, 1.645 in OD, set of 16, ideal for drag racing applications.

PAC Racing Springs PAC-1281X-16 valve springs. Features RPM Series beehive design, 245 lb/in rate, 1.208 in coil bind, 0.709 in/1.031 in OD, fits Ford Gen III 5.0L Coyote, set of 16, ideal for performance builds.

PAC Racing Springs PAC-1258 valve spring. Features 1200 Series Drag Race triple spring design, 688 lb/in rate, 1.130 in coil bind, 1.645 in OD, each, ideal for drag racing applications.

PAC Racing Springs PAC-1238X-16 valve springs. Features RPM Series dual spring design, 600 lb/in rate, 0.985 in coil bind, 1.274 in OD, fits GM LS-Series, set of 16, ideal for performance builds.

PAC Racing Springs PAC-R641-16 valve spring retainers. Features 600 Series, 8-degree lock angle, 1.090 in/0.695 in OD steps, dual spring compatible, tool steel, set of 16, ideal for performance builds.

PAC Racing Springs PAC-1386-16 valve springs. Features 1300 Series Circle Track dual spring design, 513 lb/in rate, 1.140 in coil bind, 1.564 in OD, set of 16, ideal for circle track racing.

PAC Racing Springs PAC-1226-16 valve springs. Features 1200 Series Drag Race dual spring design, 663 lb/in rate, 1.150 in coil bind, 1.550 in OD, set of 16, ideal for drag racing applications.

PAC Racing Springs PAC-1201-16 valve springs. Features 1200 Series Circle Track single spring with damper, 540 lb/in rate, 1.115 in coil bind, 1.260 in OD, set of 16, ideal for circle track racing.

PAC Racing Springs PAC-L8134-16 valve locks. Features mini 8-degree lock angle, 11/32 in valve stem, +0.050 height, steel with black oxide finish, set of 16, ideal for performance builds.