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Some additional NVH should be expected
Valve Spring Specs (Standard/High Pressure):
High seat pressure valve springs required
HP Rating = 900bhp
After brake line kit installation the system will require the brake fluid reservoir to be refiled and air bled from the system
GSC Single Valve Spring and Ti Retainer Set FA EJ20X Some additional NVH should beKEEP YOUR VALVES UNDER CONTROL GSC's singe cylindrical valve spring kit is their entry level performance valve spring option at an economical cost. The lower open pressure is ideal for milder cam options and or less extreme rpm conditions.. Upgraded valve springs are essential for controlling valve movement with more aggressive cam profiles. A higher spring rate is also necessary under high boost conditions due to the manifold pressures acting against
