Performance Valvetrain

Pioneer PF-555-HD-200 valve lock. Features 7-degree angle, 11/32in valve stem, standard height, steel construction, blue paint finish, ensures secure valve retention, sold as a set of 100.

Pioneer PF-150-5 camshaft thrust plate. Features 0.160in thick, steel construction, black oxide finish, fits Ford FE-Series engines, ensures proper camshaft alignment, sold as a set of 5.

Pioneer PF-125-5 camshaft thrust plate. Features 0.250in thick, steel construction, black oxide finish, fits Small Block Ford engines, ensures proper camshaft alignment, sold as a set of 5.

Pioneer PF-123-5 camshaft thrust plate. Features 0.154in thick, steel construction, black oxide finish, fits Big Block Ford engines, ensures proper camshaft alignment, sold as a set of 5.

PAC Racing Springs PAC-1396-16 valve springs. Features 1300 Series Circle Track dual spring design, 538 lb/in rate, 1.150 in coil bind, 1.574 in OD, set of 16, ideal for circle track racing.

PAC Racing Springs PAC-1355 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-1312-16 valve springs. Features 1300 Series Drag Race dual spring design, 400 lb/in rate, 0.850 in coil bind, 1.106 in OD, set of 16, ideal for drag racing applications.

PAC Racing Springs PAC-1364L-16 valve springs. Features 1300 Series Drag Race triple spring design, 840 lb/in rate, 1.115 in coil bind, 1.681 in OD, set of 16, ideal for drag racing applications.

PAC Racing Springs PAC-1349-16 valve springs. Features 1300 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-1904-16 valve springs. Features Hot Rod Series dual spring design, 370 lb/in rate, 1.010 in coil bind, 1.290 in OD, set of 16, ideal for hot rod performance builds.

PAC Racing Springs PAC-1940-16 valve springs. Features Hot Rod Series dual spring with damper, 469 lb/in rate, 1.120 in coil bind, 1.555 in OD, set of 16, ideal for hot rod performance builds.

PAC Racing Springs PAC-1385-16 valve springs. Features 1300 Series Circle Track dual spring with damper, 525 lb/in rate, 1.145 in coil bind, 1.564 in OD, set of 16, ideal for circle track racing.