Performance Valvetrain

PAC Racing Springs PAC-1340-16 valve springs. Features 1300 Series Circle Track dual spring design, 467 lb/in rate, 1.195 in coil bind, 1.500 in OD, set of 16, ideal for circle track racing.

PAC Racing Springs PAC-1211X-16 valve springs. Features RPM Series beehive design, 385 lb/in rate, 1.100 in coil bind, 0.906 in/1.290 in OD, fits GM LS-Series, set of 16, ideal for performance builds.

PAC Racing Springs PAC-1347-16 valve springs. Features 1300 Series Drag Race triple spring design, 682 lb/in rate, 1.130 in coil bind, 1.645 in OD, set of 16, ideal for drag racing applications.

PAC Racing Springs PAC-1249-16 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-1216L-16 valve springs. Features 1200 Series Circle Track single spring with damper, 454 lb/in rate, 1.130 in coil bind, 1.260 in OD, Race Saver Series spec, set of 16, ideal for circle track racing.

PAC Racing Springs PAC-1214X-16 valve springs. Features RPM Series ovate beehive design, 275 lb/in rate, 1.013 in coil bind, 1.061 in OD, fits Ford 4.6L 2V Modular engine, set of 16, ideal for performance builds.

PAC Racing Springs PAC-1223-16 valve springs. Features 1200 Series ovate beehive design, 324 lb/in rate, 0.900 in coil bind, 0.742 in/1.105 in OD, fits Ford Modular, set of 16, ideal for performance builds.

PAC Racing Springs PAC-1280X-16 valve springs. Features RPM Series ovate beehive design, 386 lb/in rate, 1.181 in coil bind, 1.077 in/1.282 in OD, fits GM 604 crate motor, set of 16, ideal for performance builds.

PAC Racing Springs PAC-1201X-16 valve springs. Features RPM Series single spring with damper, 540 lb/in rate, 1.115 in coil bind, 1.260 in OD, set of 16, ideal for high-performance builds.

PAC Racing Springs PAC-1325-16 valve springs. Features 1300 Series Circle Track dual spring design, 644 lb/in rate, 1.150 in coil bind, 1.550 in OD, set of 16, ideal for circle track racing.

PAC Racing Springs PAC-1940 valve spring. Features Hot Rod Series dual spring with damper, 469 lb/in rate, 1.120 in coil bind, 1.555 in OD, each, ideal for hot rod performance builds.

PAC Racing Springs PAC-1227-16 valve springs. Features 1200 Series Circle Track dual spring with damper, 500 lb/in rate, 1.130 in coil bind, 1.539 in OD, set of 16, ideal for circle track racing.