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Cam and lifter kits are designed in both solid and hydraulic configurations. The hydraulic uses an internal mechanism to constantly adjust the valvetrain to zero lash, while the solid is manually set to the desired lash via an adjustable valvetrain. Given the same lift and duration at the valves, the power will be identical until the hydraulic begins to deliver false motion at the valves, typically a product of loss of valvetrain control at higher rpm. View Related Article
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