whats up in the past 3 weeks i've bent 2 pushrods in the same spot. The roker arm next to it is really loose and we tighten it to the right specs and it all the sudden really loose and the nut wont go down any further. So any way i have a 575 lift on the cam so i was wondering if something may be wrong with the cam or what cause i need to know. thanks

 

Most likely you're pulling out your pressed-in rocker stud(s). You may also be up against coil bind or guide/retainer interference.

That's too much lift to expect them to handle. Pull the heads and have screw-in rocker studs installed, and make sure the heads/valve/springs can handle that lift.