I got a 460 rebuilt for my boat and last time I came off the water had a pinging sound pulled the oil pan and and the 5-6 rods have bad play but what's the cause is it a spun bearing and what else would be wrong with the motor? Or can the cam be ok to put in a new short block? What should I look for?

 

Who rebuilt it? Were new stock bearings used or was the cam ground?

 

Was the crank ground 10/10 and the stock size bearing used? what rpm you turning it? 460 weak point is it's oiling system.. my 2 cents.