Performance Valvetrain

PAC Racing Springs PAC-1246-16 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-1357 valve spring. Features 1300 Series Drag Race dual spring design, 780 lb/in rate, 1.130 in coil bind, 1.500 in OD, each, ideal for drag racing applications.

PAC Racing Springs PAC-1248 valve spring. Features 1200 Series Drag Race triple spring design, 687 lb/in rate, 1.130 in coil bind, 1.645 in OD, each, ideal for drag racing applications.

PAC Racing Springs PAC-1427-16 valve springs. Features 1400 Series conical single spring design, 500 lb/in rate, 1.175 in coil bind, 1.104 in/1.454 in OD, set of 16, ideal for high-performance builds.

PAC Racing Springs PAC-1359-16 valve springs. Features 1300 Series Drag Race dual spring design, 895 lb/in rate, 1.190 in coil bind, 1.522 in OD, set of 16, ideal for drag racing applications.

PAC Racing Springs PAC-1916-16 valve springs. Features Hot Rod Series dual spring with damper, 436 lb/in rate, 1.135 in coil bind, 1.538 in OD, set of 16, ideal for hot rod performance builds.

PAC Racing Springs PAC-1355H-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-1230X-16 valve springs. Features RPM Series ovate beehive design, 291 lb/in rate, 1.089 in coil bind, 0.720 in/1.083 in OD, set of 16, ideal for high-performance builds.

PAC Racing Springs PAC-R536-16 valve spring retainers. Features 500 Series, 10-degree lock angle, 1.125 in/0.800 in OD steps, dual spring compatible, titanium, set of 16, ideal for performance builds.

PAC Racing Springs PAC-1529-16 valve springs. Features 1500 Series circle track dual spring design, 560 lb/in rate, 1.090 in coil bind, 1.284 in OD, set of 16, ideal for circle track racing.

PAC Racing Springs PAC-R391-16 valve spring retainers. Features 300 Series, 10-degree lock angle, 1.067 in/0.785 in/0.635 in OD steps, 1.459 in OD, dual spring compatible, chromoly, set of 16, ideal...

PAC Racing Springs PAC-1218-16 valve springs. Features 1200 Series ovate beehive design, 313 lb/in rate, 1.140 in coil bind, 0.885 in/1.290 in OD, fits GM LS-Series, set of 16, ideal for performance...