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Message: [QUOTE="White_monster, post: 441852, member: 594"] You float a valve and the pushrod looses contact with the rocker and that's when problems start. So to combat that you up the spring pressure which is needed. After you do that the deflection of the stock pushrod is too much so you upgrade the pushrod. The next weak link isn't the lifter thou. The stamped rocker is the next weak link, rather that than a lifter personally till a certain point. This discussion is good but it can be summarized quickly. Every part can be left stock and you will make lots of power, but upgraded parts are built for increased capacities that some stock parts can't hold but not all. Also since when does valve to piston contact crack a piston? Usually you will bend the valve then drop the valve and destroy the cylinder liner if you run it past bending the valve. Bend down this road lots in cars. [/QUOTE]

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