* Extreme Duty Valve Spring Kit – Titanium Retainers – .675in. Lift
* Specifically designed & processed with extra shot peening & nitrided to resist failure under the most extreme conditions.
* For use with serious high performance cams 0.640-.675in. lift
* Includes springs,retainers & upper & lower collars
* 185lbs @ 1.860, 460lbs @ 1.160in.
* Coil bind 1.080in.
* Maximum lift = .675in.
* Rocker box clearance must be checked
* Spring travel must be checked
* Valve timing must be accurate
** Over revving will lead to pre-mature failure of Valve Springs & collars.