engine clank
Really it's just a guess for us, if the starter is still working and the engine won't spin at all I would have a friend check to see if the balancer is spinning at all.
There's really only a couple places that would make metal to metal clanking, either valve train or rotating assembly..
You could always pull the valve covers and take a look inside and make sure you didn't break a rocker and spit a pushrod out.. It has happened to me during regular driving.. I didn't have the trunion upgrade back then..


