broke a rocker arm on my 470 at the track yesterday. all roller topend, lost oil pressure when the lifter popped out. clicked it off asap, thoughts on the bottom end? put a new rocker on it and start it?? think it will be ok?

If you shut it off quick it should be ok, theres still
flow just no pressure so it most likely had residual
oil down there... put the rocker on and give it a go
and see if your pressure is the same