after my engine did the EXACT thing as mentioned above ..with the lifter clip..I am glad that the shaft broke..dont get me wrong I wish nothing would have happened in the first place..I did talk to a top fuel guy who says that they run a magnito or something like that so that if the shaft breaks it automatically shuts down the ignition...I think these are pretty rare occurances but I may be wrong? Mine broke after the
oil pump sucked up a piece of that clip. I noticed the
oil pressure was Notta and shut er down ...427 side oiler ..took it all apart and thank god nothing was broke but do wonder why the hell that clip broke?