The springs we’re offering have a higher spring pressure, allowing your engine to reach higher RPM’s by reducing valve float. These valve springs are an excellent choice for a mildly built engine (naturally aspirated or low boost 0-10lbs). The spring specs are approximately 70lbs of seat pressure at 1.420" install height and about 130lbs at .400 lift with coil bind occurring at .550" from the installed height.
NOTE: Sold as a set of (16).
Contact our Tech Support Line for further information at 928-575-2174.