Thread: Roller rockers

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i personally have run into studs pulling out on mild motors.... its usually with old heads with even just a mild cam, specially with stock rockers though, because the slot in the rocker was designed for a standard lift cam, add a little extra lift and the end of the slot pushes against the stud in an upward motion which slowly pulls it out

I was assuming they don't pull out if nothing else is wrong. Of course a too short slot can pull them out and a cracked tower can be the cause of one becoming loose, too. But I've never seen one being pulld out on a healthy head with near stock components.
Max