PAC Racing Springs PAC-T904 valve spring height gauge. Features 1.400-2.000 in range, 0.001 in scale, purple anodized finish, designed for GM LS dual springs, ensures precise measurements, sold as each.
PAC Racing Springs PAC-1222X-16 valve springs. Features RPM Series dual spring design, 425 lb/in rate, 1.055 in coil bind, 1.280 in OD, fits GM LS-Series, set of 16, ideal for performance builds.
PAC Racing Springs PAC-1238X valve spring. Features RPM Series dual spring design, 600 lb/in rate, 0.985 in coil bind, 1.274 in OD, fits GM LS-Series, each, ideal for performance builds.
PAC Racing Springs PAC-1237X-16 valve springs. Features RPM Series dual spring design, 550 lb/in rate, 1.045 in coil bind, 1.274 in OD, fits GM LS-Series, set of 16, ideal for performance builds.