i think its blowed

I can't tell you how many times I've done that in my life time, Mostly on BB engines. Every time it kicked the lifter out,lost oil presure and clattered like hell. In every case I put the lifter back in the hole, pulled the push rod out of the broke rocker,replaced the rocker and hammered down again. with no problems. I guess i've been lucky. But my advise is what I did. Look at upgrading your valve train if all is well.