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The CR557 M8 cam is designed for mid to high RPM performance in big bore engines 124" and up. It features distinct opening and closing ramp profiles that reduce valve bounce and valve spring harmonics for superior valve control and improved horsepower in high-compression builds. This cam replaces the CR540 and CR540-2 while maintaining compatibility with select performance applications and is intended for competition use only, not for vehicles operated on public highways.
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