The Pro Dual Valve Springs are a "must have" upgrade when running bigger lift cams and higher RPM's. With 75lbs of seat pressure at a 1.400" install height and open pressure of 215lbs (at .450" lift) they will work perfectly with any naturally aspirated or low boost application (0-20 lbs of boost). These springs are rated up to 8,000 RPM and will accommodate cam lifts up to .455".
LC Engineering Pro Dual Springs require our titanium retainers (part #1023243), hardened keepers (part #1023091) and spring seat (part #1023013). These parts are available as a complete kit (part #1023223). We also offer a HD version of these springs for higher boost applications (part #1023217)
Contact our Tech Support Line for further information at 928-855-6341.
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