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Tuesday 18 April 2023


M-8 Valve Spring Kits from Kibblewhite

These new M-8 valve spring kits by Pacifica, California based Kibblewhite Precision Machining (KPMI) are lightweight racing dual spring kits for 0.630" lift that utilize a lightweight retainer, a heavy duty 9° keeper and a dual spring system with increased pressures and rates. 

These features are designed to maximize valvetrain control when paired with top performance applications running larger valves, high lift cams and increased rpms. KPMI says that the system must be run with KPMI's new shortened Milwaukee-8 valves guides, or with modified stock guides.

The retainers are designed for optimum rocker cover clearance and offered in either titanium or H.T. steel retainers. 

The kits include heavy duty 9° H.T. steel keepers and Red Viton seals.